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Show 860 MR. R. I, POCOCK ON SCORPIONS, PEDIPALPS, [Nov. 14, Genus ARANCETHRA Butler. ARANcETHRA CAMBRIDGEI Butl. Aranceihra cambridgei, Butler, Tr. Ent. Soc. 1873, p. 175, pl. iv. fig. 8. Aranceihra unqari, Karsch, Zeits. gesammt. Naturw. li. p. 322, pl. ix. fig. 1 (1878). Loc. Femand Vas Biver (Du Ghaillu; type); Lagos (Capt. Elmes); W . Africa; Fernando Po (Mr. Kalbreger); Accra (67. A. Higlett); Loango Biver (H. L. Duggan); Benito Biver (67. L. Bates). ARANJETHRA BUTLERI, sp. n. (Plate LV. fig. 1.) Colour. Carapace, mandibles, mouth-parts, sternum, and coxa? reddish yellow; patella, tibia, and tarsus of palp black ; legs black, the femur of 1st and part of 2nd reddish ; tibia? of 1st, 2nd, and 4th pairs with a broad basal yellow ring, the ring incomplete below on the 1st; upper and lower side of abdomen and the tips of the lateral prominences black ; sigilla reddish. Carapace and legs as in A. cambridgei. Abdomen of much the same form also as in that species, about twice as wide as long; the median portion of the anterior border simply emarginate, with a low* tuberculiform prominence on each side; lateral portion of carapace furnished with five blunt conical lobes, one on the anterior border just in front of the antero-lateral sigillum, the posterior process lower than the others ; the entire convex posterior border of the abdomen for a space which exceeds half the length of the abdomen without tubercles; abdominal integument punctured as well as striolate; sigilla very large, the six on the middle of the back arranged in a circular form, the quadrangle formed by the anterior and posterior pairs only, about twdce as long as wdde. Measurements in millimetres.-Length of abdomen 7, width 16. Loc. Benito Biver (67. L. Bates). This interesting new species, which is dedicated to Dr. A. G. Butler, the describer of the genus Aranceihra, may be recognized from the typical and hitherto only known species of the genus by the following characters :- a. Carapace, sternum, legs, &c. a rich dark red or black colour; underside of abdomen entirely black, a black band across the fore part of the abdomen above; margin of abdomen furnished with at least 8 strong sharp spiniform processes, the posterior not very far from the posterior middle line ; sigilla much smaller, cambridgei Butl. b. Carapace, sternum, coxae, &c. reddish yellow; tibias of 1st, 2nd, and 4th legs with a yellow band; abdomen flavous below and without anterior black band above; abdomen furnished with only 5 lateral blunt tubercles, the posterior of these being far from the middle of the posterior border ; sigilla very large butleri, sp. n. |
