DESCRIPTIONS OF GENERA AND SPECIES. 253 



specimens are smaller, although not always shorter 

 than that species. I should think I must have seen 

 some thousands of each. 



The principal distinctions, beyond size, between 

 this species and G. Canestrinii are firstly, that the 

 secondary hairs on the main body hairs of the female 

 are straight in this species, but are sharply bent 

 inward at their distal end in G. Canestrinii, and 

 that these secondary hairs in both sexes are much 

 shorter in this species than in the other. 



Colour yellowish grey, with a very slight shade of 

 pink at the edges of the body. Rostrum and legs 

 reddish. 



Texture rough and dull, the male simply granular ; 

 the female covered on the dorsal surface with wart-like 

 projections of the cuticle irregularly scattered ; often 

 bifid or trifid, but not so large as those of G. Canes- 

 trinii. 



Shape, Cephalothorax of female a short, wide 

 triangle ; of male rather longer in proportion. Ab- 

 domen of female approaching square, but slightly 

 more oblong than that of G. Canestrinii. Abdomen 

 of male less square and less flattened. 



FEMALE. 



The Pectinated Hairs. The body is bordered by 

 about sixteen pairs of large and elegant bilaterally 

 pectinated hairs, the longest of which are on the 

 lateral margins ; five pairs of these are on the cephalo- 

 thorax, and the remainder on the abdomen; the 

 dorsum of the abdomen also bears five pairs of hairs. 

 The barbs or teeth of all these hairs are nearly straight ; 

 those on the peripheral hairs (PL XI, fig. 5) are mostly 

 much longer and further apart than those on the 

 notogastral hairs. The notogastral hairs are arranged 

 as follows : viz. one pair, of less than half the length 

 of the abdomen, placed between the sixth pair (i. e. 

 the first abdominal pair of peripheral hairs) ; a second 



