24 



251 Chiton (Chietopleura) hartwegii Cpr. 



This with the two following are the moie common species. 



252 Chiton (Maugerella) conspicua Cpr 



Abundant beneath bowlders on shingle beaches. San Pedro; 

 San Diego. Todos Santos bay. 



253 Chiton (Stenoradsia) magdalenensi , Hds 



Beneath bowlders at False bay; not rare. 



254 Chiton (Pallochiton) lanuginosa (Cpr) Dall, 1878 

 [Hemphillia lanuginosa Cpr. MSS. The generic name was 



already preoccupied in Limacidse. D.] 



255 Chiton ( Lepidopleurus ?) pectinulatus Cpr 

 San Diego, Cal. 



256 Chiton (Callistochiton) decoratus Cpr 

 San Diego, Cal. 



257 Chiton (Nuttallina) scabra Reeve 

 San Diego, Cal. 



258 Chiton (Mopalia) ciliata (See No. 1280) 



259 Chiton (Mopalia) lignosa acuta Cpr 



260 Philine, species indet. 



Plats on shores of San Diego bay, v.ith Haminea vesicula. 



261 Atys nonscripta A Ad 



Rare at San Diego. 



262 Tornatella punctocrelata Cpr 



Not common. 



263 Tornatina eximia Baird 



San Diego bay [Described from Vancouver. D.] 



264 Aplysia californica Cooper 



Ocean beaches among sea-grass or in rock pools. 



265 Doris sanguinea Cooper, Cal ac pr 2:204. 

 Under rocks, San Diego; rare. 



[Note. — The identifications of these nudibranchs are partly 

 provisional in the absence of typically named specimens or fig- 

 ures. D.] 



§Asteronotus. Brilliant red, with few large black spots irreg- 

 ularly distributed, surface smooth; dorsal tentacles short; bran- 

 chiae composed of 8 simply pinnate rajs, expanding close to the 

 posterior end of the body. Length V 2 , breadth *4 inch, height 

 about the same. Under stones in San Diego bay, rare. 



Orcutt No. 22, among sea-grass and under stones on rocky 

 beaches. Cooper, Cal. ac pr 3:58, reports: "4 specimens from 

 Santa Barbara with D. montereyensis. Differ from original in 

 having the black spots very small. Tentacles acute, cylindric- 

 conic, retractile into a cavity bordered by a toothed membrane. I 

 cannot discover the stellate valvular structure of the branchial 

 opening which characterizes the genus Asteronotus, in these spec- 

 imens." 



