12G REV. O. P. CAMBRIDGE ON SOME NEW [Jan. 21, 



less prominent ; and the epidermis of the abdomen is of a less cori- 

 aceous nature. The cephalothorax, falces, maxillae, and labium are 

 of a deep yellow-brown colour, the sternum being rather darker. 



The eyes are in the usual relative position, though the laterals 

 are rather further removed on either side from the four central 

 eyes. 



The legs are moderately long, not very strong, furnished with 

 hairs, and some fine longish erect slender spine-like bristles of dif- 

 ferent lengths along their uppersides. 



The palpi are short, slender, and, with the legs, of a somewhat 

 dull orange-yellow colour. 



The abdomen, when looked at from above, is of a short oval form, 

 but, from its great convexity, nearly globular in appearance when 

 viewed laterally ; it is of a dull whitish-yellow colour, marked in 

 several places with irregular groups of cretaceous white spots. A 

 broad deep-brown band runs longitudinally along the centre of the 

 upperside ; and at either of its fore corners is a round, roughened, 

 tuberculous, dark yellow-brown boss prolonged into a strongish 

 curved spine. At the middle of the hinder extremity of the abdomen 

 is another boss of a similar nature, but rounder and more prominent ; 

 from the centre of the extremity of this boss springs a vertical ta- 

 pering pointed straight spine, but not nearly so long nor so strong 

 as the two at the fore extremity : the surface of the abdomen, as well 

 as the small prominences of the bosses, are furnished with hairs ; the 

 lower part of the sides and the hinder portion of the underside have 

 some irregular blackish markings. The spinners are small, and placed 

 at the extremity of a somewhat tapering prominence of the abdomen, 

 the end of the prominence being encircled by a sort of collar of a cori- 

 aceous texture and yellow-brown colour. 



A single adult female was received from Ceylon, from Mr. Thwaites, 

 in 1871. 



Gen. nov. Stegosoma. 



Ceplialothorax and ocular portion of caput as in Phoroncidia. 



Eyes as in Phoroncidia. 



Maxillae more curved towards the labium. 



Labium somewhat semicircular, its apex slightly pointed. 



Sternum heart-shaped. 



Abdomen, looked at from above, very nearly round, moderately 

 convex on the upperside, and forming a roof or shield over the whole 

 spider. Its epidermis is corneous. 



Legs short, moderately strong, and differing but little in their 

 length, which appeared to be (though it was difficult to be certain 

 on the point) relatively 4, 1, 2, 3. 



This genus is very nearly allied to Phoroncidia (Westw.), and 

 perhaps still more nearly to TJlesanis (L. Koch) ; but I am inclined 

 to think it must be held distinct from either. 



Stegosoma testtjdo, sp. n. (Plate XIV. fig. 10.) 



Female adult, length 1 line. 



When looked at from above, the whole of the cephalothorax, in- 



