new Species o/'Tlielyplionidea. 411 



thorax, and terminate with a movable, sharp, curved fang, 

 which appears to be destitute of teeth. 



Palpi very strong, 5-jointed ; each issues from a large, 

 strong, long, nearly cylindrical basal joint or maxilla, the inner 

 fore corner of which is prolonged into a sharp strong point ; 

 the other joints are armed variously with teeth ; and the final 

 or digital joint terminates with an apparently movable, sharp, 

 cm*ved fang. 



Legs moderately long, 7-jointed, those of the first pair much 

 the longest, slender, and palpiform ; the tarsal joint of this 

 pair is divided into several minute articulations, and without 

 any terminal claws ; the tarsi of the other three pairs appear 

 to be undivided, and each is furnished with three simple, curved, 

 terminal claws ; the femora of the fourth pair are of inordinate 

 strength. 



Abdomen covered above and below with transverse horny 

 plates, and ending with a variously formed, short, caudal 

 prolongation. 



Sternum situated beneath the fore portion of the cephalo- 

 thorax, between the basal joints of the legs of the first two 

 pairs, of a somewhat hollow-sided pentagonal form, considerably 

 drawn out behind. There is no sternum, properly so called, 

 connected with the basal joints of the legs of the two hinder 

 pairs, these being articulated to the general sternal surface of 

 that portion of the cephalothorax. 



Nyctalop)s crassicaudataj sp. n. PI. XXII. fig. 1. 



Length 2\ lines. 



The general colour is yellow-brown, the cephalothorax being 

 of a rather darker though duller hue than the rest, and the 

 palpi and falces a little richer and brighter, with red-brown 

 edgings to their different articulations. 



The legs are sparingly furnished with hairs and fine spine- 

 like bristles ; the two superior terminal claws are long, 

 moderately strong, simple, and cm'ved, the inferior one small 

 and sharply bent downwards ; their relative length is 1, 4, 2, 3, 

 those of the first pair much the longest, slender, and without 

 terminal claws ; the tarsi short, and subdivided into about six 

 minute articulations. 



The palpi issue from the maxilla by a narrowish neck, but 

 quickly swell out into a strong tumid first joint, which has a 

 moderately strong, curved, sharp-pointed tooth at its lower 

 outer fore corner, and another smaller one opposite to it on 

 the inner side ; the second joint is still stronger, longer, and 

 also more tumid ; the third is not so large, but very nearly as 

 long, rather bent, and with a moderate strong sharp tooth 



29* 



