DIGENETIC TREMATODES-MANTER AND VAN CLEAVE 337 



Girhllidab: Kibblers 



Girella nigricans (Ay res), common opaleye: 

 Haplosplanchnus girellae, new species. 

 Opechona orientalis (Layman, 1930). 

 Opecoelus adsphaericus, new species. 



Sciaenidab: Croakers 



Menticirrhus undulatus (Girard), California corbina: 



Diplangus triradiatus, new species. 

 Roncador stearnsi (Steindachner), spotfin croaker: 



Diplangus triradiatus, new species. 

 Umbnna roncador Jordan and Gilbert, yellowfin croaker: 



Diplangus triradiatus, new species. 



Genitocotyle acirrata Park, 1937. 



Pseudopecoelus umbrinae, new species. 



Stephanostomum calif ornicum, new species. 

 Cynoscion nobilis (Ayres), white sea bass: 



Pleorchis calif orniensis, new species. 



Cottidae: Sculpins 



Clinocottus analis ausfraZis Hubbs, tide-pool woolly sculpin: 

 Helicometrina elongata Noble and Park, 1937. 

 Opecoelus adsphaericus, new species. 



Embiotocidae: Surfperches and Sea perches 



Damalichthys vacca Girard, pileperch : 

 Genitocotyle acirrata Park, 1937. 



Gobiidae: Gobies 



Gillichthys mirabilis Cooper, mudsucker : 

 Immature hemiurid. 



Clinidab 



Gibbonsia elegans (Cooper) , ocellated sawfish: 



Bucephalus sp., immature, encysted. 



Helicometrina elongata Noble and Park, 1937. 

 Gibbonsia metzi Hubbs, weed sawfish: 



HelicoTnetrina elongata Noble and Park, 1937. 



Pseudopecoelus gibbonsiae, new species. 



Batrachoididae 



Porichthys sp.: 



Aponurus trachinoti Manter, 1940. 

 Brachadena pyriformis Linton, 1910. 



An examination of the foregoing list reveals a striking degree of 

 fidelity between the digenetic trematodes and their definitive ma- 

 rine fish hosts in southern California. Only 3 of the 17 species of 

 digenetic trematodes identified in this study have been found to 

 transgress family bounds in their definitive hosts. These are 

 Helicometrina elongata, Genitocotyle acirrata, and Opecoelus ad. 

 sphaericus. 



