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



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

 The scales are 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 17 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 Tomodon strigatus. 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 Rev. 0. P. CAMBRIDGE, B.A. 



Tribe Octonoculina. 

 Family DRASSIDJE. Genus DRASSUS. 



Drassus clavator. 



Male adult. Length J of an inch ; length of cephalothorax | ; 

 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 by 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* 



