1881.] REV. O. p. CAMBRIDGE ON NEW ARANEIDEA. 11'6 



the horns is continued by a strong one ; and there are others also, 

 less strong, issning from the ocular area and clypeus. 



The eyes of the lateral pairs are considerably larger than the rest, 

 the fore laterals being, apparently, rather the largest ; the interval 

 between those of the fore central pair is distinctly greater than that 

 between each and the fore lateral next to it, while that between the 

 hind centrals is considerably less than that between each and the hind 

 lateral next to it. 



The legs are yellow-brown, somewhat suffused with a more dusky 

 hue ; the genual, tibial, and metatarsal joints marked longitudinally 

 with a white stripe. The tarsi are equal in length and strength to 

 the metatarsi, and cylindrical in form. 



The falpi are similar in colour to the legs, short, strong ; radial 

 joint short, digital tapering, and furnished with short strong spines. 



'Y\\%falces are short, strong, straight, vertical, subconical ; similar 

 in colour to the cephalothorax, and furnished with a few prominent 

 spine-like bristles in front. 



The maxillcB, labium, and sternum are similar to the legs in 

 colour. 



The abdomen is of a dull yellowish hue tinged with brown ; two 

 tubercles form a transverse row towards the anterior margin ; from 

 each issues a strong dark vertical spine, two finer spines also form 

 another transverse row in front below the anterior margin ; and 

 the surface of the upper side generally is furnished with short and 

 still finer pale spines. The spinners are small and short. 



An example of the female, which had not attained maturity, was 

 contained in the collection received from the Amazons. The cephalo- 

 thorax of a considerably larger specimen (wanting the abdomen and 

 some of the legs) differed in the larger size of the tubercles and grann- 

 losities, and was of a much deeper hue. This was probably an adult 

 example. 



The genus Jphantochilus, Cambr. (P. Z. S. 1870, p. 744, pi xliv. 

 fig. 10), was placed provisionally in the family Myrmecidae. Sub- 

 sequent examination and consideration, however, led me to conclude 

 without any doubt that its true position was, if not among, at least 

 near the Thomisidse. The examination of the present genus, which 

 much resembles, and is closely allied to Aphantochilus, induces me 

 to include the two in a separate family next to the one before men- 

 tioned. 



Fam. Perissoblemmid^. 

 Gen. nov. Perissoblemma. 



Characters of the Genus, 

 Cephalothorax rather oblong, oval, with a broad ocnlar area ; very 

 convex above ; lateral marginal constriction at the caput very slight, 

 as also are the normal indentations ; thoracic junction prominent and 

 elevated, and, when looked at in profile, considerably higher than 

 the ocular area, which occupies the whole width of the fore part of 

 the caput. 



