166 PEGKHAM. [Vol. 2, 



The whole aspect of the spider is clumsy and thick, the 

 cephalothorax being short and broad, while the abdomen is 

 very large, much wider than the cephalothorax, which it over- 

 laps. 



The general color effect is dark brown. Looked at closely 

 the cephalothorax is seen to be black, with the sides covered with 

 rather bright yellow hairs, and two narrow lines of yellow hairs 

 down the middle. The abdomen is dark brown and seems to 

 have been covered with yellow hairs, which, in this specimen, 

 are largely rubbed off. Under alcohol two or three pairs of 

 black dots appear on the dorsum. The falces, palpi and legs 

 are dark brown, with a good many yellowish-white hairs. The 

 first legs have the femoral and tibial joints considerably en- 

 larged. The second, third and fourth pairs have the proximal 

 end of the metatarsus light yellow and translucent, while the 

 tarsi are black. 



Although we have put this species into the genus Anamosa, 

 it does not agree, so far as the general shape of the cephalo- 

 thorax is concerned, with the other species, callosa. In incon- 

 cinna the sides are gently rounded, the anterior and posterior 

 ends being about equally wide, while in callosa the anterior 

 end is much the narrower, as may be seen by the drawing. 



We have a single female from Port of Spain, Trinidad, 

 sent to us by Mr. W. E. Broadway. 



BALLUS C. KOCH. 

 Plate XV., Figs. 8—86. 



Small, thick-set spiders, with the abdomen not much larger 

 than the cephalothorax. 



The cephalothorax is rathei' low and is a little longer than 

 wide. The sides are vertical in front, rounded out behind, 

 widest opposite the dorsal eyes and contracted a little in front 

 and more plainly at the posterior end. The thoracic part does 

 not slant in the anterior half. 



The quadrangle of the eyes is a little wider behind than in 

 front, is one-third wider than long, and occupies from a little 



