358 REV. O. p. CAMBRIDGE ON NEW SPIDERS. [June 5, 



Thomisid^. 



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



Cephalothorax oblong, tolerably convex and evenly rounded above ; 

 latoral marginal indentation at caput slight ; normal grooves and 

 indentations imperceptible. 



E}jes small, in two transverse rows, occupying the greater part 

 (nearly the whole) ot" the width of the caput ; the anterior row con- 

 sideia'blv the shortest, slightly, if at all, curved ; the posterior row 

 much more curved ; the convexity of the latter curve is directed 

 forwards ; the four central eyes are the smallest, and form a small 

 trapezoid whose anterior side is the shortest ; the eyes of the hind- 

 central pair are exceedingly minute and difficult to be seen ; the 

 fore-laterals are the largest of the eight. 



Legs not very long, strong, 1, 2 (or 2, I ?), 3, 4 ; their length is 

 not greatly different from each other, the difference between I and 

 2 is exceedingly slight. The articulation between the tarsi and meta- 

 tarsi is almost obsolete, being (especially in those of the first and 

 second pairs) almost imperceptible, the faintest possible transverse 

 line alone being visible ; as a joint, it can scarcely be of any use ; the 

 length of the tarsus is considerably more than that of the metatarsus. 

 They are furnished with hairs only ; each tarsus ends with two 

 (apparently not dentated) curved claws, and some, somewhat clavi- 

 form, hairs occupy the underside of the anterior portion of the 

 tarsi, but scarcely to be called a scopala. 



Maxilla. These were not easy to be seen with perfect accuracy 

 owing to some adventitious matter collected about them ; but, so far 

 as they could be observed, they are rather long, narrow, straight, and 

 pointed at the extremities. 



The labium ajipeared to be narrow-oblong, about half the length 

 of the maxillae, rather broadest and truncate at the apex. 



The sternum is oblong-oval, truncate (in a slightly hollow line) at 

 the fore extremity. 



Abdomen roundish oval, flattish on its upperside, and projecting 

 fairly over the base of the cephalothorax. 



Cyrsillus drassiformis, sp. n. (Plate XXXVI. fig. 4.) 



Adult male, length 2 lines. 



The cephalothorax is black, thinly clothed with hairs and short 

 bristles, and its surface has a roughened or somewhat pock-marked 

 appearance. 



The eyes of the hind-central pair are considerably nearer to each 

 other than each is to the lateral on its side ; and this is also the case 

 in respect to the anterior row, which is, however, much shorter than 

 the posterior. The height of the clypeus is less than half that of 

 the facial space. 



The legs are of a dec p rich blackish mahogany colour, the femora 

 and genua deeper than the rest. 



The falces are moderately long, strong, conical, vertical ; their 



