captured in Rio Janeiro. 435 



spots on the lateral margins of the sternum having a brown hue. 

 The eyes are disposed on the anterior part of the cephalothorax ; 

 the four intermediate ones are placed on a prominence, and 

 nearly form a square, those of the anterior pair, which are the 

 largest of the eight, being rather wider apart than those of the 

 posterior pair ; the eyes of each lateral pair are in a horizontal 

 line, and separated by a conspicuous interval ; the anterior one 

 is seated on a minute tubercle, and the posterior one is the 

 smallest. The abdomen is oviform, thinly clothed with short 

 fine hairs, convex above, projects over the base of the cephalo- 

 thorax, and is of a dull yellowish colour ; a fine black sinuous 

 line originates in a large brown spot on each side of the anterior 

 extremity of the upper part ; and these lines, which converge to 

 the spinners, comprise in the anterior part of the space included 

 between them two other fine, black, slightly sinuous lines, which 

 somewhat abruptly converge to a point nearly equidistant from 

 the two extremities of the abdomen ; on each side of the medial 

 line there is a row of minute brown indented spots, and a series of 

 obscure, brown, transverse, cirrved bars whose convexity is directed 

 forwards extends from the anterior region to the spinners ; the 

 under part has a pale brown hue tinged with yellow, the medial 

 line, which is much the darkest, having a pale yellow longitudinal 

 line on each side ; and small spots of the same hue surround the 

 spinners; the sexual organs are moderately developed, promi- 

 nent, and of a yellowish-brown colour, the orifice, situated at 

 the base of an oval process connected with their anterior margin 

 and directed backwards, having a dark reddish-brown hue. 



Epe'ira luteola. 



Length of the male ^-th of an inch ; length of the cephalo- 

 thorax -L, ; breadth ^ ; breadth of the abdomen -^ ', length of 

 an anterior leg X ; length of a leg of the third pair ^. 



The eyes are seated on black spots on the anterior part of the 

 cephalothorax; the four intermediate ones form a square, the 

 two posterior ones are rather the largest, and the anterior ones 

 are placed on a prominence ; the eyes of each lateral pair are 

 seated obliquely on a tubercle, and the anterior ones are much the 

 smallest and lightest-coloured of the eight. The cephalothorax 

 is compressed before, rounded on the sides, moderately convex, 

 glossy, and has an indentation in the medial line ; it is of a red- 

 brown colour, with a short yellowish line in the middle of the 

 cephalic region. The falces are small, conical, vertical, armed 

 with a few teeth on the inner surface, and have a brownish- yellow 

 hue. The maxilla? are straight, and enlarged at the extremity ; 

 and the lip is semicircular, but somewhat pointed at the apex. 

 These organs are of a yellowish-brown colour, being much the 



29* 



