198 REV. o. p. CAMBRIDGE ON TWO [Mar. 18, 



The other new genus described in the present paper is founded on 

 a very remarkable Spider from Ceylon, belonging to the family Gnjp- 

 tothdidce, of which the typical genus is Cryptothele, L. Koch (Die 

 Arachn. Austral, p. 239, pi. 20. fig. 2). The new genus Beyillus 

 may be readily distinguished from Cryptothele by several structural 

 differences. 



Fam. Thomisid^. 

 Ornithoscatoides, gen. nov. 



Cephalothorax short, broad, as broad or as broader than long, 

 moderately convex above and slightly tuberculose ; caput short, 

 truncate in front, and strongly compressed on its lateral margins. 



Eyes in two curved rows, the anterior shortest (the convexity of 

 the curves directed forwards, and forming a crescent) ; small, not 

 greatly differing in size, but the fore laterals are largest, and the four 

 centrals smallest ; those of the lateral pairs are seated on or at the 

 base of tuberculose eminences. 



Fakes strong, not very long, conical, and nearly vertical. 



MaxillcE moderately long and strong, a little wider at the top 

 than in the middle ; rounded at the top on the outer side, and 

 slightly leaning over the labium, which is al)out half the length 

 of the maxillae, and of a somewhat oblong form rounded at the 

 apex. 



Sternum oblong-oval. 



Legs strong, moderately long, 1, 2, 4, 3 ; those of the first and 

 second pairs much the strongest and longest but nearly equal in 

 length ; those also of the third and fourth pairs are nearly of equal 

 length and strength. The tibia; are rather strongly bent, and give 

 the legs a peculiar character. All are somewhat roughened or 

 tuberculose, especially those of the first two pairs, and furnished with 

 spines of varied length and strength ; those on the tibiae and metatarsi 

 of the two anterior pairs are strongest, the longest forming two 

 parallel longitudinal rows beneath the joints. The legs terminate with 

 two strong, curved, pectinated claws, beneath which is a small claw- 

 tuft. Among the spines are one or two not very long, rather strong, 

 of a pale colour or semidiaphanous appearance, on the upper sides of 

 the femora ; these spines have a peculiar function as observed in 

 one of the species, and may very possibly be of generic value, though 

 spines of various sizes are found similarly situated in many other 

 Thomisid genera, while their special function (if any) has not been 

 yet observed, so far as I am aware, in other instances. 



The imlpi terminate with a single pectinated claw. 



Abdomen broader behind than in front and truncated at botli 

 extremities ; the upper surface and hinder part more or less thickly 

 covered with round or subconical, shining, or other tubercular 

 elevations. The spinners are short, stout, and closely grouped 

 within a somewhat circular sheath-like cincture much resembling the 

 disposition of those of many Epeirids. 



