MacFarlaiid — Preliminary Account of Dorididse. 45 



braiK'hia'; marjiiii of niantlr naimwiy edged with white; foot of same 

 ultramarine blue as rest of Ixuly witli a suffused median stripe of lighter 

 blue upon dorsal surface of tail. Jihinophores perfoliate with 12 to 14 

 leaves, davus slightly darker blue than the body of the animal, retractile 

 within low sheaths with smooth margins. Branchiae 9 to 11, simply 

 pinnate, slightly lighter in color tlian the mantle, completely retractile 

 within low sheaths with smooth margins. 



Length, 22 mm. Radula? Rui)roductive system ? 



The above external characters are taken from my notes of 1894 and 

 based upon the one specimen allu<led to. The paper of Cockerell gives 

 nothing as to the anatomy of this beautiful creature, a gap which I hope 

 soon to be able to fill. Until this is done little can be said authoritatively 

 as to whether or not this and the 2 other species of Chronodoris described 

 by Cockerell are distinct from the 2 California species already described 

 byBergh (1879, 1894). 



10. Doriopsis fulva sp. nov. 



Type from Monterey Bay, Calif. No. 181,286, U. S. National Museum. 



Body elongate elliptical, the mantle equally rounded in front and behind, 

 slightly depressed, soft, dorsum with low papilla-like elevations nearly all 

 of which bear a small central white fleck. General body-color a rich 

 yellow, foot and under side of mantle slightly lighter, rhinophores darker, 

 branchial plumes yellowish white; mantle margin wide, thin, crenulate, 

 extending well beyond the foot ; anterior edge of foot bilabiate, the upper 

 lip deeply notched; mouth opening very small, pore-like; oral tentacles 

 very small, adnate to under surface of mantle, directed forward. 



Length up to 65 mm. ; breadth to 30 mm. ; height, 12 to 15 mm. 



Rhinophores not large, perfoliate with IS to 20 leaves, retractile into 

 sheaths with smooth thin margins; branchial plumes 5, tripinate, wide 

 spreading, retractile within a sheath with high flaring margin ; oral arma- 

 ture and radula absent as in this genus. Glans penis cylindro-conical, 

 thickly set with strongly curved hooks arranged in quincunx and con- 

 tinued down the cavity of the vas deferens for about .18 mm. 



One of the commonest Nudibranchs in Monterey Bay. Abundant in 

 tide-pools during the summer months, less so in the winter but never en- 

 tirely absent. 



1 1 is barely possible that this species is identical with the Don's (dbojmnctatu 

 of Cooper from Santa Barbara and Santa Catalina Island, the general color- 

 ation being similar. Other points in his brief description are, however, 

 decidedly at variance, and in the absence of his original type specimens 

 the identification is very difficult. 



11. Aegires albopunctatus sp. nov. 



Type from Monterey Bay, Calif. No. 181,281, U. S. National Museum. 

 Body arched, not at all depressed, robust, highest and broadest just in 



