NO. 14 MANTER : DIGENETIC TREMATODES OF FISHES 361 



Localities: Port Utria, Colombia (type locality) 

 Bahia Honda, Panama 



Number : 5 specimens from E. calif orniensis 

 One specimen from P. approximans 



SPECIFIC DIAGNOSIS OF ANISOPORUS EUCINOSTOMI 



Body smooth, tapering at each end but almost equally wide along most 

 of its length, widest posterior to acetabulum; length 1.222 to 2.497; 

 width 0.345 to 0.465. Forebody narrow, from i,^ to Yi total body length. 

 Oral sucker longer than wide, 0.109 to 0.144 in transverse diameter; 

 acetabulum protuberant, each lip with 3 prominent lobelike papillae, 

 length of acetabulum 0.144 to 0.210; sucker ratio probably about 2:3. A 

 conspicuous accessory sucker, ventral, median or submedian, directly an- 

 terior to acetabular stalk, between acetabulum and genital pore. Acces- 

 sory sucker with distinct pore and radiating muscles but lacking an outer 

 membrane. Genital pore slightly to the left opposite base of pharynx. 



Short prepharynx; pharynx 0.064 to 0.110 in length by 0.049 to 0.085 

 wide; esophagus muscular, 0.119 to 0.136 long, bifurcating dorsal to ace- 

 tabulum ; ceca unite near posterior end of body ; anus near posterior tip of 

 body. 



Testes tandem, close together, in posterior half of hindbody, trans- 

 versely extended, reaching almost to sides of body; posttesticular space 

 sometimes longer, sometimes shorter than forebody. Cirrus sac lacking; 

 cirrus short; prostatic cells few; seminal vesicle sinuous, extending to in- 

 testinal bifurcation or rarely as far as posterior edge of acetabulum. 

 Ovary subtriangular, transversely extended, median, immediately pretes- 

 ticular. Uterus largely intercecal, entirely preovarian; eggs 41 to 48 by 

 25 to 29 [x ; no seminal receptacle. Vitelline follicles large, from near base 

 of acetabular stalk to posterior end of body except for a short interruption 

 opposite posterior testis and sometimes opposite anterior testis; ventral, 

 dorsal, and lateral to ceca ; filling posttesticular area. Excretory pore ter- 

 minal or dorsoterminal, close to anus ; anterior extent of excretory vesicle 

 not determined. 



Discussion. The genus Anisoporus was named by Ozaki in 1928 

 (Ozaki, 1928a). A. cobraeformisj the type, is the only other species de- 

 scribed to date. 



Anisoporus is very closely related to Opecoeloides Odhner, 1928. 

 Opecoeloides was based on Distomum furcatiim Brems. It possesses an ac- 

 cessory sucker between the acetabulum and the genital pore, and has 6 



