36 NOTES ON A COLLECTION OF CALIFORNIAN NUDIBRANCHS. 



ChromodOPis, Aid. & Hanc. 



This largegenus, the most numerous in species of all the DoricUdae crypto- 

 branchiatae, is chiefly found in warm seas, and is specially characteristic of 

 the tropical Indo-Pacific. It occurs in the Mediterranean, and is probably 

 found in the adjacent parts of the Atlantic, though it appears to be recorded 

 only from the Cape Verde Islands and the Bermudas, the latter record not 

 being very certain. In the Pacific it is recorded from as far north as Japan, 

 and on the American Coast from Puget Sound and Monterey : in the south 

 from New Zealand, Tasmania and Juan Fernandez. 



The brilliant coloration, common in the genus, has caused a great 

 number of species to be figured and described, often very inadequately. 

 Burgh's list in the System includes 105 species, and about 18 have been 

 described since. Chr. unloersitatig, Cockerell, as explained below, appears 

 to be Chr. californiensis, B., and Ghr. te/milinearis, Farran {1905), is, I think, 

 the same as Chr. nujwdriata, Eliot (1904). Bergh has shown that Ckr. 

 elizahethma should be called Chi-. <iuadricolur (Riippel & Leuckart), and 

 Clir. peiechialis (Gould) 1852, is probably identical with Chr. tuiiudifera, 

 CoUingwood and Chr. jKdLesfens, Bergh. Chr. aureo-marginata, Cheeseman 

 (Trans. New Zealand Institute, 1880, xiii, p. 223.) is probably identical with 

 one of the many previously described species which have a similar coloration. 

 The following species are more or less valid : — 



106. 67ir. agassizii, Bergh. 



107. Chr. 2)orterae, Coc\i&xe\\. 



108. Clir. macfarlandi, Cockerell. 



109. Chr. sykesi, Eliot, 

 no. Chr. cavae, Eliot. 

 III. Chr. annulata, Eliot. 

 112 Chr. splendens, Eliot. 



113. Ghr. vicina, Eliot. 



114. Chr. nigrostriafa, Eliot. 



= Chr. tenuiUiiearis, Farran. 



115. Chr. inconsincua, Eliot. 



116. Chr. (?) Jlava, Eliot. (Anatomy unknown.) 



117. Chr. tasmaniensis, Bergh. 



118. Chr. figurafa, Bergh. 



119. Chr. aegialia, Bergh. 



120. Chr. atopa, Bergh. 



Chr. (?) roseo-jncta, Verrill, is an interesting form, but some doubt must 

 remain as to its genus, since the dentition is unknown, and it bears papillae 

 on its back which is unusual in Cliromodoris.. 



The Chromodorids recorded from the North West Coast of America 

 are Chr. dalli, calif orniensi^, agassizii, macfarlandi, pcxrierae and aegialia 

 (Gulf of California.) 



