400 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 10 



Capitella Blainville (1828), with 2 species. 



Capitellethus Chamberlin (1919) with one species, C. dispar (Ehlers) 



from the Indo-Pacific. 

 Capitellides Mesnil (1897) with one species, C, giardi Mesnil from 



France, and another, C. teres Treadwell (1930) from Texas, of 



doubtful systematic position. 

 Capitomastus Eisig (1887) with one species, C. minimus (Langerhans) 



from Europe. 

 Dasybranchus Grube (1850) with about 8 species. 

 Dasybranchethus Monro (1931) with one species, D. fauveli Monro 



from the Great Barrier Reef, Australia. 

 Eunotomastus Mcintosh (1885) with one species. 

 Heteromastides Augener (1914) with one species, H. bifidus Augener 



from southwestern Australia. 

 Heteromastus Eisig (1887) with 3 species. 

 Leiochrides Augener (1914) with 3 species. 

 Leiochrus Ehlers (1912) with one species, L. alutaceus Ehlers from off 



Sumatra. 

 Mastobranchus Eisig (1887) with 3 species, M. dollfusi Fauvel (1936) 



from Maroc, M. indicus Southern (1921) from India, and 



M. trinchesii Eisig (1887) from the Mediterranean Sea. 

 Mediomastus Hartman (1944) with one species. 

 Notomastus Sars (1851) with 3 (possibly 2) subgenera and about 17 



species, including: 

 Clistomastus Eisig (1887) with 2 species. 



Eisigella Gravier (1901) with one species, E. ouanaryensis Gravier 

 from French Guiana. [This may be the same as Clistomastus^. 

 Notomastus with about 14 species. 

 Parheteromastus Monro (1937) with one species, P. tenuis Monro from 



Burma. 

 Protocapitella Berkeley (1932) with one species. 

 Pseudo capitella Fauvel (1913) with one species, P. incerta Fauvel from 



Europe. 

 Pulliella Fauvel (1929) with one species, P. armata Fauvel from the 



Gulf of Manaar, India. 

 Scyphoproctus Gravier (1904) with 2 species, S. djiboutiensis Gravier 



from the Red Sea, and S. gravieri Okuda (1940) from Japan. 

 [Isomastus Gravier (1911, p. 312) is here regarded the same as Capi- 



tella, as already suggested by Augener (1932), p. 44.] 



