OCR Text |
Show 658 MR. E. J. M I E R S O N A C O L L E C T I O N O F [June 19, This species, of which unfortunately but a single specimen exists, in bad condition, is distinguished by the unequal-sized hands and the coloration (there being no trace whatever of banded markings on the legs) from the other American species of the genus. The abdomen is imperfect. In the form of the hands it most nearly resembles C. vittatus, Bosc, of which specimens from Charleston Bay, Carolina, are in the national collection, presented by the Smithsonian Institution. The following American species of this genus in the collection of the British Museum are apparently undescribed. CLIBANARIUS CARNESCENS, sp. n. (Plate LXVI. fig. 2.) Carapace with the frontal median tooth very small, acute. Eye-peduncles slender, and a little shorter than the anterior margin of the carapace, their basal scales small, and denticulated on their external margins. External antennse with their basal scales denticulated on their inner margins, and ciliated towards their apex, reaching very little beyond the extremity of the penultimate joint. Anterior legs with the hands very small, oblong-oval, and not broader than the wrists, with strong scattered granules, and tufts of short hairs. Ambulatory legs with the tarsi very long, curved, not compressed, much longer than the penultimate joints, with tufts of short hairs. Colour orange-pink, with 4 broad alternating vittse of darker colour on the legs. Length to base of abdomen 9 lines. Hab. Cayenne. (Coll. Brit. Mus.) CLIBANARIUS SPECIOSUS, sp. n. (Plate LXVI. fig. 3.) Carapace with a very small acute median frontal tooth, and with the anterior margin but slightly oblique at the bases of the external antennse, postfrontal suture nearly obsolete. Eye-peduncles slender, and about as long as the frontal margin of the carapace, with their basal scales small, narrow, and denticulated on their inner margins toward the apex. External antennse with the last joint of the peduncle more than twice as long as the penultimate, and with the basal scale slender, reaching a little beyond the extremity of the penultimate joint. Anterior legs with the hands oblong-oval, equal, rather closely and finely granulated, and clothed with short hairs. Tarsi of the second and third pairs of legs longer than the penultimate joint, with longitudinally-seriate close-set tufts of rather long hairs. Colour grey, or chocolate-brown (in dried specimens); ambulatory legs with eight longitudinal whitish narrow vittse. Length of carapace 1 inch. Hab. Brazil. (Coll. Brit. Mus.) It differs from C. brasiliensis, Dana, U.S. Expl. Exp. Crust. p. 467, pl. xxix. fig. 7, in the much longer tarsi. CLIBANARIUS LORDI, sp. n. (Plate LXVI. fig. 4.) Resembles the preceding species in coloration &c. The ophthalmic scales, however, are very small, ovate-acute, and entire; the basal scales of the external antennse very short, not reaching to the ex- |