ON THE ANASPIDACEA, LIVING AND FOSSIL. 561 
The thoracic limbs are built upon a similar plan to those of 
Anaspides, but they are more slender and the sete longer. 
The seventh thoracic limb has a small exopodite, but the seg- 
ment bearing it is incompletely marked off from the other 
segments by a groove. 
The first abdominal appendage of the male has a spatulate 
endopodite with an internal pad of recurved hooks, a 
Trxt-Fie. 49. 
Paranaspides lacustris, g. A. First abdominal limb. 8. Second 
abdominal limb. en. Endopodite. ex. Exopodite. 
proximal row of sete, and the tip is furnished with anumber 
of short spines (text-fig. 49a). 
The endopodite of the second abdominal appendage of the 
male has an external pad of recurved hooks near the top of 
the first segment, and the terminal segment carries a number 
of stout spines (text-fig. 498). There is no median spine on 
the sternum of this segment. 
There is a row of short spine-like setee on the posterior 
dorsal margin of the fourth, fifth and sixth segments. 
