12 



MR. C. TATE BEGAN ON THE 



subsplierical, with the heads of the spermatozoa at the periphery 

 and their tails curled round inside (text-fig. 9). 



Text-figure 8. 



Neostethus lanJcesteri, J. Transverse sections (X 18) : A, passing through testis ; 

 B, through air-bladder. 



A%, kidiie}' ; ?., liver; J., intestine; i., testis; y.c?., vas deferens ; 

 a., air-bladder ; r., rib. 



Similar spermatophores have been described in the Poeciliinpe 

 by Philippi (Philippi, 6 J, but I have not been able to detect 

 til em in other Cyprinodonts. 



d. Muscles (text-fig. 10). 



Pleuro-priapial muscle (pi).). — It has been mentioned that the 

 first pair of ribs enter the priapium, and that the rib of the proctal 

 side is much enlarged and is attached proximally to the enlarged 



