538 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [18B5. 



more common south and to attain a larger size than those found living 

 at San Diego. 



[Very large dead specimens were found on beach at Catalina Island 

 on the side of the isthmus opposite the harbor. D.] 

 Trivia californica Gray. 



Dead specimens of this are not uncommon, but I have not found it 

 living. 



Trivia solandri Gray. 



Eare; living specimens have been found at La Playa and False Bay 

 during the spring tides. Dead specimens not rare at Todos Santos 

 Bay. 



Lunatia lewisii Glcl. 



Rare ; apparently common in deep water and farther south. 

 Neverita recluziana Petit. 



JSTot rare on bay shores, at very low water, especially during the 

 spring. 

 Sigaretiis debilis Gld. 



I have a single broken individual from San Diego, and another from 

 Todos Santos Bay. 

 Lamellaria diegoensis Dall, n. s., PL XXIV, figs. 1-3. 



False Bay at low water, April and May; rare. When living the soft 

 parts completely cover the shell and are, in part, of a vivid red color 

 similar to that of Doris sanguinea. 



[Soft parts as contracted in alcohol about .65 inch in length, above 

 smooth or nearly so, dull white or grayish, beneath lighter colored; 

 form rounded oval, a well marked notch in the mantle edge (notaeum) 

 a little to the left of the middle line in front ; foot rather large, rounded 

 behind, nearly transversely truncate in front with rounded corners and 

 the front margin deeply grooved or double; head dark gray above, 

 flattened ; tentacles obtusely tapering, somewhat flattened ; eyes large 

 and black, on tubercles outside of the bases of the tentacles ; mouth 

 hidden under the head, small ; verge extremely large, broad, flattened 

 extending forward beyond the head, curved to the left in a broad as- 

 cending spiral; smooth below, granulous above with a short line of 

 elevated papillfe inside the edge of the outer part ; beyond the curve is 

 an indentation on the left side behind which is a stout conical papilla 

 from the apex of which extends upward a slowly tapering cylindro-conic 

 tubular portion ; the nuchal cavity is prolonged backward under the 

 anterior edge of the immersed shell ; shell calcareous except the imme- 

 diate margins of the aperture, grayish waxen white, slightly iridescent 

 Avith a mucilaginous polish like dr^^ glue inside and out, somewhat 

 malleated, with indications of the lines of growth by obscure slightly 

 elevated transverse waves and faint irregular spiral tracings; three- 

 whorled, very much inflated, though the form varies slightly between 

 individuals and probably between the sexes; nucleus small, smooth; 

 suture deep, not channeled ; spire pervious from below ; columella less 



