OCR Text |
Show 400 MR. R. I. TOCOCK OX SOME [Dec. 2, differs, as also it does from P. albipalpis, in having the ocular tubercle and the area of the carapace in front of and at the sides of it much more thickly and strongly denticulated. Measurements in mm.:-Length of carapace 2 ; of 1st segment of mandible 10, of 2nd 11. Loc. New Zealand: West Taieri Bush, Otago (J. V. Jennings). One male example without its legs. There is also in the British Museum a female example with the mandibles much shorter and thicker than in the above described males, which may represent the female sex of either of the forms of P. nigripalpis. It was collected in Maungatua by Mr. J. V. Jennings. Suborder M e c o s t e t h i . Group I n s id ia to r e s . Family T r i^ x o b u x id ^:. Genus T r l e xo b u n u s Sorens. T r i^en o bu n u s p e c t in a tu s , sp. n. (Text-fig. 84, 0, p. 410.) Colour blackish ; legs variegated with yellow. Dorsal scute depressed, ornamented with a network of granular ridges separated by smooth interspaces and showing a segmental arrangement behind the cephalic constriction, forming four transverse rows which pass between the five rows of tubercles; of these tubercles the median are the largest and recurved (text-fig. 84, 0). Ocular tubercle directed upwards and forwards, long, spiniform, armed above with smaller procurved spiniform tubercles, below with one, and on each side with three long spines, the first close to its base, the third with its fellow giving a tridentate appearance to the tubercle ; on each side of the tubercle there are five long strong spines. The first and second free tergites granular and armed, like the posterior border of the scute, with seven strong spines, one being median ; the third tergite less regularly, but not less strongly spined; the fourth (anal) tubercular. Sterna with a transverse series of tubercles. Mandibles weakly tubercular. Palpi shortish, not very strong, shorter than the dorsal scute; the femur with some hair-tipped tubercles above and three long spines below; tibia with two, tarsus with three pairs of interior spines. Legs with coarsely granular coxae, that of 1st shortly spined in front, of 2nd and 4th strongly spined above externally; trochanters and femora also spined, especially the femur of the 1st, which is armed with long, stout, close-set spines, those on the dorsal side forming a series, ten in number; patellse and tibias tubercular, tubercles on the 1st leg more spiniform than those on the others; constricted portion of protarsus subconical; tarsal segments of 1st 3, of 2nd 6, of 3rd and 4th 4; ultimate segment of 3rd and 4th tarsus longer than the antepenultimate (second). |