OCR Text |
Show 398 MR. R. I. P0C0CK OX SOME [Dec. 2, tibia and protarsus of 1st also spicular, of 2nd, 3rd, and 4tli scarcely so ; tarsi of 3rd and 4th scopulate below, of 1st and 2nd less so. Measurements in mm.:-Total length 6 ; mandible 9 ; palp 10 ; 1st leg 23, 2nd 43, 3rd 25, 4th 36. Loc. East Africa : Mombasa (J). J. Wilson). This species appears to fall into the genus Guruia of Loman (Zool. Jahrb. xvi. pt. 2, p. 172, 1902), judging by the form of the mandible, and the presence of three ocular spines. But the ocular tubercle is only separated from the anterior border of the carapace (text fig. 81, A) by a space equalling its own long diameter. It further differs from G. frigescens from Gurui in the larger size of the ocular spines, its longer legs, and in having the tarsus of the palp longer than the femur. It is also longer-legged than G. levis from Zanzibar, and further differs in the form of the mandible. To distinguish Guruia from Rhampsinitus, Loman gives :-Legs shoi'ter; palpi very slender, much weaker than the legs, partly concealed by the large mandibles ; mandibles of male much longer than the body, with the second segment thickened and oval; ocular tubercle in the posterior part of the carapace, a little longer than high, armed above with three dissimilar denticles. In P. (G.) palmatimanus the legs are much longer than in P. (R.) spenceri, and the palpi relatively shorter and slightly more robust. In neither are they partly concealed by the mandibles. In both the posterior slope of the tubercle rises on a level with the groove lying just in front of the first transverse row of tubercles on the carapace ; and the frontal area of the carapace is relatively a little longer in P. (R.) spenceri than in P. (G.) palmatimanus, and the ocular tubercle is lower. The relative length of the mandibles in the two is about the same. Genus M acropsalis Sorens. M acropsalis h o g g i, sp. n. $ . Colour yellowish brown, marbled with darker richer brown and spotted with white; palpi and mandibles pale, clouded with brown ; legs pale, distinctly banded with brown. Carapace with numerous scattered denticles before, behind, and beside the tubercle, a few more externally; tubercle with at least two rows of spicules. Mandibles densely covered with spicules ; fingers not crossing when closed. Palpi with patella shorter than tibia and without process. Trochanters of legs spinous in front; femora spinous, especially the anterior above and beneath ; patellae of 1st, 3rd, and 4tli spinous above and below, especially that of 1st leg, of 2nd with two apical spicules above ; tibia of 1st thickly spinous, of the rest smooth, that of the 2nd with spurious articulations. S • Differs from $ in having the second segment of the mandible much more sparsely and strongly denticulated in front, and the distal extremity of the patella of the palpus produced |