1874.] REV. O. P. CAMBRIDGE ON NEW DRA8SIDE8. 377 



spinners forwards ; the underside is pale yellow-drab. Spinners 

 prominent and rather long, but not very unequal in length ; those 

 of the inferior pair are strongest ; they are of a yellow-brown colour. 

 A single adult male was found under a stone at Corfu by myself 

 in May 1864. 



Genus Prosthesima, L. Koch (Melanopkora, C. Koch). 

 Prosthesima tristicula, sp. n. (Plate LI. fig. 6.) 

 Adult male, length rather more than 2| lines. 

 In general character, form, and colour this Spider is of the ordi- 

 nary type. 



The cephalothorax is but very slightly constricted on the sides at 

 the caput, and the upper surface is tolerably uniformly rounded on 

 the sides ; its colour, as well as that of the maxillae, is yellow-brown, 

 sparingly clothed with paler hairs, the normal indentations being 

 shown by converging dusky brown rays meeting in a small longitu- 

 dinal reddish brown line at the thoracic junctional indentation. 



The eyes are in two slightly curved and as nearly as possible concen- 

 tric transverse rows, the foremost row being the shortest ; they form 

 a transverse curved oblong figure, the curve directed backwards, and 

 the length (taking the foremost row as its length) about double its 

 width ; the interval between the eyes of the hind central pair is a 

 little greater than that between each of them and the hind lateral 

 eye on its side, being slightly greater than the diameter of one of 

 the former ; the lateral eyes of each row are the largest, the fore 

 laterals being rather larger than the hind laterals ; each fore lateral is 

 separated from the hind lateral nearest to it by an interval equal to 

 the diameter of the former ; the fore central's are smallest of the 

 eight, placed on a slight prominence, and wider apart from each other 

 than each is from the fore lateral on its side, from which each is 

 separated by no more than half the diameter of the fore central eye. 

 The height of the clypeus is rather less than half that of the facial 

 space. 



The legs are tolerably long and strong ; their relative length is 

 4, 1, 2, 3 ; they are fairly furnished with hairs, some of them coarse 

 and long, and bristles ; and on those of the third and fourth pairs there 

 are strong spines on the tibial and metatarsal joints. The colour of 

 the legs is a dusky greenish yellow-brown ; the tarsi generally brown, 

 those of the fourth pair, however, being pale yellow ; the inferior 

 surface of the tarsi is pretty thickly clothed with short strong hairs, 

 but scarcely amounting to a scopula ; each tarsus ends with two 

 strongish curved claws, pectinated or toothed beneath their posterior 

 half. The claws on the tarsi of the fourth pair are stronger than 

 those of the other legs. 



"The palpi are short, brownish yellow (except the digital joint, 

 which is darker brown), and furnished sparingly with hairs. The 

 cubital and radial joints are short; the latter is the shortest, 

 and has its extremity on the outer side prolonged into a tapering 

 blunt-pointed apophysis exceeding in length the joint itself. The 

 Proc. Zool. Soc.— 1874, No. XXV. 25 



