234 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



4. Toriicella lineata (Wood) 



This species is reported by Willett as by far the most 

 abundant of the shore chitons in all the localities he visited, 

 though all the specimens seen by me were taken at Forrester 

 Island, some on shore, the remainder dredged in from 10 to 

 30 fathoms. 



The shore specimens are stated to be usually found on top 

 of the rocks in association with the very dissimilar Katharina, 

 and their beautiful coloring is almost always obscured by a 

 green deposit very difficult to remove. It is interesting to 

 note that all the dredged specimens I have included here run 

 very much smaller than those taken between tides, including 

 not a single specimen larger than 21x12 mm. (gross measure- 

 ments of a specimen in alcohol [S. S. B. 291]). Willett 

 even writes on one of his labels : "I consider this entirely 

 distinct from the true lineata. It is confined to deep water, 

 not occurring in shallow water with latter." However, ex- 

 cept for a certain curious uniformity in general facies, I have 

 been unable to find any dependable evidence (among external 

 characters alone) confirming this opinion. It may be men- 

 tioned also that whereas there are no large specimens among 

 the dredged material, I have on the other hand seen no small 

 ones from the shore. 



5. Tonicella submarmorea (Middendorff) 



Taken in 15 to 25 fathoms at Forrester Island. Willett 

 reports this species as "not common and always dredged." 

 All the specimens are rather small. The nrevailing color is 

 usually a beautiful rose red. 



6. Cyanoplax raymondi (Pilsbry) 



Taken at Forrester Island, and at the Waterfall Cannery, 

 Prince of Wales Island, "invariably between tides." This 

 species "likes to get in a crack in the rocks," though it is 

 sometimes found on top. 



