274 



Transactions. 



median grey stripe extend one - third the length from the front. In the 



centre behind these is a white pattern shaped Uke a St. Andrew's cross. 



On the under-side are four longitudinal pale-yellow stripes. The spinnerets 



are dark brown, the cribellum nearly white. 



The cephalothorax, convex on the cephalic part, is furnished with some 



strong curved bristles over the anterior area ; otherwise it is rather bare. 



The sides of the thoracic part are well 

 rounded. 



The rear row of eyes is strongly pro- 

 curved, the lower edge of the median 

 being half their diameter above the upper 

 edge of the laterals. The median eyes 



O O 



OL 



are 1^ times their dia- 



a. Eyes. 



Fig. 1. — Amatjeobius chaeybdis. 



meter apart, and 2| times 

 of the same distant from 

 the laterals, which are 

 oval, their long diameter 

 perpendicular. They are 

 on a common tubercle 

 with the front laterals, 

 which are of the same size 

 and shape but lying hori- 

 zontally, and from these 

 they are parted at the 

 corners by a third of their 

 length. The front row is 

 straight. The outer edge 

 of its side eyes lies just 

 within the inner edge of 

 b. Profile, natural size, c Lip and maxillae, ^^xe rear laterals. They 

 a. Male palp, front and back. ,•, - , ■,• , -^ 



^ ^ are their long diameter 



distant from the median, 

 which are as large as the rear median, and stand their diameter apart from 

 one another, and more than twice that distance from the rear median eyes. 

 The clypeus is twdce their diameter. 



The mandibles are long and powerful, kneed at the base, and furnished 

 with long upstanding bristles. The fangs are long and well curved. There 

 are three rather small teeth on the inner margin of the falx-sheath, and 

 one large between two small on the outer. 



The maxillcB are upright, straight on the inner edge and moderately 

 rounded on the outer. The lif is one-third longer than broad, narrowed 

 anteriorly, truncate with a slight hollow in front. 



The sternum is shield-shaped, twice the breadth of the lip, and is raised 

 up from the margin ; it is covered with long upstanding hairs ; it narrows 

 to a point at the rear, and slightly projects between the two rear coxse, 

 which are not quite contiguous. These are also separated from the coxse 

 of the third pair. 



The legs are moderately fine, tapering to their anterior ends. The front 

 pair are remarkably long, being nearly 4| times the length of the cephalo- 

 thorax. There is no calamistrum on the male. The superior claws are 

 strong and are well curved at the anterior end, with about nine teeth on 

 the basal half. 



The ijaljyi are fine, and furnished with three apophyses on the back of 

 the tibial joint. 



