1883.] REV. O. p. CAMBRIDGE ON NEW SPIDERS. 363 



yellowish-white markings, with a considerable well-defined patch of 

 the same colour just above the spinners ; on the underside is a 

 broad central longitudinal dull yellowish band, with a short narrow 

 bar of the same between its liinder end and the spinners ; six small 

 somewhat impressed circular spots, each surrounded by a halo of 

 dark yellow-brown, form two parallel longitudinal lines of three spots 

 in each towards the hinder part of the central yellowish band. The 

 spinners are of a dark brown hue, short, closely grouped together, 

 and similar in length, but the inferior pair much the strongest. 



A single example of this little Spider (which, however, may pos- 

 sibly attain a much larger size at its maturity) was received from 

 Ceylon in 18/1 from the late Mr. G. H. K. Thwaites. At first 

 sight it is very like a Salticid Spider ; but its structure, though 

 strongly allied to some other Thomisid genera, seems to require a 

 new genus for its reception. 



Pherecydes, g. n. (nom. propr,). 



Cephalothorax short, broad, and nearly round. 



Eyes 8, not very large, but unequal in size, occupying the whole 

 transverse diameter of the caput, those of each lateral pair seated 

 upon an extensive tubercular prominence, extending laterally beyond 

 the lower part of the caput. Their relative position is that common 

 to many Thomisid genera belonging to the Xysticus group, forming 

 two nearly parallel curved transverse lines, the convexity of the 

 curve directed forwards ; the external eyes of the anterior row are 

 the largest. 



Legs neither very long nor strong ; those of the second pair were 

 wanting in the only example seen ; those of the fourth pair are con- 

 siderably shorter than those of the first, the third being a little 

 shorter than the fourth. The second pair would probably be 

 shghtly shorter than the first. They are furnished thinly with 

 hairs and a few spines, besides which beneath the tibiae and meta- 

 tarsi of the first and second pairs are some longer and stronger 

 sessile spines arranged in successive pairs. Each tarsus ends with 

 two curved pectinated claws. 



Palpi short, and terminating with a small curved claw. 



Maxillce rather long, a little enlarged in a pointed-oval form 

 at their extremity, and inclined over the labium, which appears to 

 be of a rather narrow or oblong form, as if lanceolate, with the point 

 of tlie lancet (at its apex) truncated ; but this portion of structure, 

 owing to some adventitious substance obscuring it, could not be satis- 

 factorily determined. 



Sternum heart-shaped. 



Abdomen of a somewhat pentagonal form, broadest and highest 

 behind. Spinners small ; those of the inferior rather stronger than 

 those of the superior pair. 



Pherecydes tuberculatus, sp. u. (Plate XXXVIl. fig. 8.) 



Adult female, length 2 lines. 



The colour of the cephalothorax is light whitish yellow tinged 



