Rev. O. P. Cambridge on two new British Spiders. 171 



of chin-shields, the anterior of which is somewhat the larger. 

 The scales arc in twenty-one rows, rhombic, those of the sides 

 similar to those on the back. The number of the ventral plates 

 is in both snakes the same, viz. 174 ; that of the caudals varies 

 between 44 and 56. 



The ground-colour of the upper parts is brownish olive : the 

 head is speckled with brown, and a brown streak runs from the 

 eye to the angle of the mouth. The neck is surrounded by a 

 white or yellowish-white collar, bordered posteriorly by a large 

 brownish-black blotch ; there is along the middle of the back a 

 series of brown spots, some of which are confluent into a zigzag 

 band; two or three series of small spots run along each side. 

 The lower parts are uniform white. 



A. B. 



inch. lin. inch, lin. 



Total length 1/ 9 16 5 



Length of the head 6 . . 5 



Greatest width of the head 5 . . 4 



Length of the trunk 15 13 



Length of the tail 2 3 3 



One of the specimens has been brought from Nicaragua, the 

 other from the island of Laguna, together with Herpetodryas 

 Rappii and Tomodun stri^atus. Therefore the native country of 

 the typical specimen of the latter species appears to be incor- 

 rectly stated*, and Tomodon holds good as a truly neotropical 

 genus. 



XIX. — Descriptions of two British Spiders new to Science. 

 By the llev. 0. P. Cambridge, B.A. 



Tribe OctonocTiliiia. 

 Family Drassid^i;. Genus Drassus. 

 Drassus clavator. 

 Male adult. — Length \ of an inch ; length of cephalothorax -f ; 

 relative length of legs 4, 1, 2, 3. 



The distinguishing characteristics of this species seem to be, 

 its medium size ; the golden coppery and silky hue ; the close 

 contiguity of the two central eyes of the posterior row ; the two 

 curved lines formed hy the six pale spots on the abdomen ; and 

 the large-sized, long-oval, club-shaped digital joint of the palpi. 



A more minute description is as follows : — 

 Cephalothorax longish oval, and clothed sparingly with fine 

 hairs; slightly truncate at the region of the eyes, but sloping 



* Gthr. Catal. Colubr. Snakes, p. 52, where the snake is said to come 

 from India. The pupil of Tomodon strigatus is round. 



12* 



