IV. V. 



abd 



Fio. 134. 



A. Phtisica marina, 9, x 5. B, Caprella linearis, 9, x7 (Caprellidea). a', antennule; 

 a", antenna ; abd, vestigial abdomen, with small appendages in 'A ; br, branchiae ; gn. 

 gnathopods (second and third thoracic appendages) ; m, brood-pouch ; prp', prp", first and 

 second peraeopods (fourth and fifth thoracic appendages), wanting in B ; IV, V, fourth and 

 Jifth thoracic somites. (After G. O. Bars.) 



Fia. 135. 



Paracyamus boopis. A, male, dorsal view, x 4. B, maxillipeds. a', antennule ; a", antenna ; 

 aid, vestigial abdomen ; br, branchiae ; gn, gnathopods (second and third thoracic appendages) ; 

 IV, V, fourth and fifth thoracic somites. (After G. O. bars.) 



227 



