iy8(i.] PROCEEDINGS "OF UNITED STATES NATIONAL MUSP:UM. 275 



54. Strongylocentrotus purpuratus A. Agassiz. 



Alaska: Sitka; Bisclioff (8810). 



British Columbia : Kioosta Village, Parry Passage ; James 6. Swan, 1883 (8814). 



WashlDgton Territory: 



Straits of Fuca ; D. S. Jordan, 1880 (3775). 



Paget Sound; D. S. Jordan, 1880 (3760). 

 California : 



William Stimpson (2495). One of Stimpson's types of the speciea. 



San Francisco ; H. Hemphill (3231). 



Farallone Islands; Charles H. Townsend, 1884 (8811). 



Santa Cruz ; A. Forrer, 1885 (10014). 



Monterey; D. S. Jordan, 1880 (3766) ; W. H. Dall (3337). 



San Miguel Island ; W. H. Dall (8808). 



Santa Cruz Island ; H. Henshaw (3251). 



Catalina Harbor, Santa Catalina Island; W. H. Dall (8813). 



San Diego ; W. J. Fisher (3236). 

 La Paz, Lower California; L. Belding, 1882 (8815). 

 Unknown localities (3590, 8809), 



Number 2495 is one of Stimpson's original types, described in 1857, 

 and probably came from San Francisco. The single specimen from 

 Sitka, Alaska (8810), agrees quite closely with specimens from San Fran- 

 cisco and other parts of California, and was received about ten years 

 ago, in connection with numerous specimens of >S^. franciscanus from the 

 same place. As 8. purpuratus had not been recorded previously from 

 north of Puget Sound, I was inclined to believe that this specimen had 

 been accidentally mixed in with the others, and in reality belonged to 

 some more southern locality. The receipt since then of a specimen from 

 Parry Passage, British Columbia (8814), which apparently represents 

 the same species, makes the extended northern range of 8. purpuratus 

 seem more probable. 



The specimens above recorded from the Straits of Fuca (3775) and 

 Puget Sound (3760) exhibit a considerable range of variation in the di- 

 rection of 8. DrobachiensiSj which also occurs at the same place, making 

 it very difiScult, and, in fact, impossible, to always separate the two 

 species with certainty. The variation is manifested both in the test and 

 spines, the former differing much in shape, and in the size and arrange- 

 ment of the tubercles; the specimens are mostly small. Quite typical 

 specimens of 8. purpuratus are not uncommon, with the characteristic 

 stout spines, often purplish, as farther south, but frequently greenish. 

 Specimens from Departure and Alert Bays, recorded under 8. Brohach- 

 iensis, present some of the same modifications ; but in the small collec- 

 tion from that place I have found nothing that could be safely referred 

 to 8. purpuratus. 



55. Strongylocentrotus tuberculatus Brandt. 



Japan : 



W. J. Fisher, U. S. S. Tuscarora (6881). 



North end of Niphon ; Wm. Stimpson, N. Pacific Expl. Exped. (3593). 

 Hong Kong Harbor, China; Wm. Stimpson, N. Pacific Expl. Exped. (3043, 



3136, 3235). 



