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Show 296 APPENDIX H 10. NEW SPECIES OF COLEOPTERA, COLLECTED BY THE EXPEDITIONS FOR GEOGRAPHICAL SURVEY8 WEST OF ONE HUNDREDTH MERIDIAN, IN CHARGE OF LIEUT. GEO. M. WHEELER, UNITED 8TATES ENGINEERS, BY JOHN L. LECONTE, M. D. CREMASTOCHILUS, Knoch. 1. E. Jlheeleii.- Brownish black, not shining; head feebly punctured, much dilated in front, broadly truncate; side angles rounded. Prothorax subquadrate, a little wider behind, sinuate on the sides; front angles acute, incurved, and densely hairy on t he inner side; hind angles rounded, expanded posteriorly; middle third of disk depressed, covered with large, shallow punctures ; lateral thirds separated by a shallow impression, more distinct near the base and tip, very sparsely punctured, rather shining and quite smooth behind the middle. Elytra with large, shallow, elongate punctures as usual; humeri shining ; mesothoracic epimera not visible from above in consequence of the posterior expansion of tbe hind angles of the prothorax. Tibia* compressed ; front pair with two approximate teeth ; middle pair with two distant teeth besides the apical one ; hind pair with a small acute denticle about the middle; tarsi compressed, hind pair two- thirds as long as the tibhe. Beneath feebly punctured, pubescent with brown hair; mentum deeply concave, sub triangular, bi sinuate behind, with the side angles produced and rounded ; hind margin feebly notched at the middle. Length, 10. b, nra = 0.42 inch. Northern New Mexico, Lieut. W. L. Carpenter. In the division of the disk of the prothorax into three parts, this species seems to be related to C. saucius. The dividing groove is, however, not well defined, and in other respects there is no resemblance. The form of the mentum is quite peculiar, and in a group where specific differences are of less magnitude would warrant the establishment of a separate genus. PLECTKODES, Horn. 2. P. Carpenleri.- Brown, clothed above with dense, short, pale pubescence, with long hairs intermixed on the head and prothorax. Clypeus slightly broader iu front; side angles broadly rounded; front margin subsinuate, narrowly reflexed. Prothorax with the sides much less rounded than in P. pubescens. Body beueath and legs clothed as in that species with very long hair; abdomen densely covered with very short, appressed pubescence. Length, 21mm= 0.83 inch. 9 clypeus less prolongedr with the margin more widely reflexed ; club of antenme small; last joint of maxillary palpi smaller than in £, and tarsi a little shorter. Los Angeles and Mohave Desert. Differs from P. pubescens, Horn ( Trans. Am. Ent. Soc, 1,167), only by the characters mentioned above. It is a curious fact that all the specimens of that species collected at Visalia, Cal., were males. The females, as is the case with Polyphylla variolosa, probably remained on the ground or at the entrance of their subterranean dwellings. ATHOUS, Esch. 3. A. cribatus.- Slender, dark brown, sparsely pubescent; front deeply, triangularly impressed; margin strongly reflexed. ' Prothorax one- third longer than wide; sides nearly straight; hind angles not prolonged, nor carinate, slightly divergent; surface coarsely and deeply punctured. Elytra finely striate; interspaces flat, punctured. Antennae with the second joint one: third as long as the third, which is triangular* and as long as the fourth. Tarsi long, slender, not lobed beneath. Length, 7.5- 10'-* 1 ™ = 0.30- 0.40 inch. Southern Colorado and Northern New Mexico; found also on Taos Peak. According to the synoptic table ( Candeze, Elat., iii, 421), this species would be placed next to A. reflexus, from which it is abundantly distinct by the smaller size and coarsely punctured prothorax. 4. A. simplex,- Slender, brown, sparsely pubescent; head densely, coarsely punctured; front deeply impressed; margin narrowly reflexed. Prothorax longer than wide; side* rounded; hind angles not prolonged, reflexed, not carinate; disk shining, sparsely punctured. Elytra finely striate; interspaces flat, punctured. Antenna* with the third joint one- half longer than the second, narrower and shorter than the third. Tarsi long, slender, not lobed. Length, 7.5- 11 miu = 0.30- 0.43 inch. Colorado, Mr. B. D. Smith. ASAPHES, Curley. 5. A. 8occifer.- Slender, brown, sparsely pubescent; front deeply concave; head strongly punctured. Prothorax more than one- third longer than wide, less strongly punctured than the head ; sides nearly straight; margin reflexed; hind angles acute, L |