S. NATIONAL MUSEUM 



PROCEEDINGS. VOL. 83 PLATE 



PARASITES OF GALVESTON BAY FISHES. 



l-A. GymnorhyiKhus gigas: 1, Head and neck, showing attachment to spherical vesicle of blastocyst; 2, 

 portion of proboscis about 1 mm from base, showing two whorls of spines; 3, portion of proboscis 

 about 0.75 mm from base, showing parts of two whorls of spines; 4, spines from near base of proboscis, 

 A, two or three rows proximal to B. 



5, 6. G. malleus: 5, Entire larva in cyst; (i, head and necic. 



7, 8. Proteocephalus elongatus: 7, Scolex; 8, A, vagina and cirrus pouch with cirrus retracted and vagina 

 distended, and B, same with cirrus exserted and vagina not distended. 



