42 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 2 



lum's (0.152 to 0.172 mm.). The small hooks are approximately the 

 same size (0.028 as compared to 0.030 mm.). Other structures are 

 correspondingly smaller. 



Family: DICLIDOPHORIDAE Cerfontaine, 1896 

 Subfamily: Diclidophorinae Cerfontaine, 1896 



Price (1936) includes Diclidophora in a new superfamily Dicli- 

 dophoroidea and retains it in the order Polypisthocotylea Odhner. He 

 removes D. affinis Linton, 1901 and D. cynoscioni MacCallum, 1907 

 from the genus Diclidophora and places them in Heterobothrium 

 Cerfontaine. 



The genera of the subfamily Diclidophorinae can be separated 

 by the following key. 



1 (2) Cirrus hooks single Diclidophoropsis Galllen 



2 (1) Cirrus hooks double 3 



3 (4) Posterior suckers sessile 7 



4 (3) Posterior suckers on pedicels 5 



5 (6) Three pairs of pedicellate suckers and a long median 



posterior extension of body Pedocotyle MacCallum 



6 (5) Four pairs pedicellate suckers, no posterior extension 



of body Diclidophora Diesing 



7 (8) Testes numerous, extending from genital pore to first 



pair of posterior suckers Cyclobothrium Cerfontaine 



8 (7) Testes few, posterior to ovary 



Heterobothrium Cerfontaine 



The following seven species of Diclidophora have been described 

 to date: 



D. chrysophryi (v. Ben. and Hess., 1863) v. Ben. and Hess., 

 1895 on Chysophrys aurata. 



D. elongata Goto, 1894 on Pagrus tumifrons and Cymothoa sp. 



D. labracis Cerfontaine, 1896 on Labrax lupus. 



D. merlangi (Kuhn, 1828) Kryer, 1838 on Merlangus vulgaris. 



D. neomaenis MacCallum, 1917 on Prionotus carolinus. 



D. smaris (Ijima, 1894) Goto, 1894 on Smaris vulgaris. 



D. taschenbergii Parona and Perugia, 1889 on Sargus rondeletii. 



