L. Harrison and T. H. Johnston 
351 
which a slight angle is formed, and from this point the hind margin is 
broadly rounded. The metathorax is twice as broad as long, and has 
the outer hairs of the posterior row spinous. The abdomen is broadly 
ellipsoidal, widest at the fourth and fifth segments, with the dorsal 
gonopodial processes large and separated by a much wider interval 
than in the last species. The chaetotaxy conforms to the usual character 
in Boopia, each tergite carrying a single row of eight hairs, divided into 
a median row of four, and two lateral pairs; but in this species the median 
row is divided so as to give the appearance of four pairs. The sternites 
bear two rows of hairs, the anterior short, the posterior long. The first 
Pig- 9. Boopia spinosa, $?• 
(L. H. del.) 
Fig. 8. Boopia uncinata, $. 
(L. H. del.) 
abdominal segment bears upon its lateral margin, at about half its 
length, a short stout spine. 
The 3 differs from the $ in its generally smaller measurements, in 
the conically rounded character of the last abdominal segment, and in 
the presence of a pair of clasping spines at the junction of trochanter 
and femur on the inner side of the second pair of legs. 
The inner face of the claws in both sexes shows a peculiar empodial 
modification, consisting of a transparent membranous expansion, of 
the general shape of the claw itself, extending almost to the apex of the 
claw and projecting ventrally from it. 
