170 



BULLETIN 76, UNITED STATES NATIONAL MUSEUM 



abundant; Sausalito and Monterey, Calif., much less abundant. In this form there 

 is a tendency to lose the furcate pedicellariae with decrease in latitude. 



b. The lanceolate form appears to be about as numerous as in ochraceus. 



c. The large denticulate pedicellariae are very numerous in the northern exam- 

 ples, less numerous in the southern. They are rather variable in form; some of the 

 proximal intermarginals develop 8 to 10 teeth whereas the usual number is 4 to 6. 



Color of forma nodiferus follows closely that of ochraceus. A number of speci- 

 mens from Monterey Bay were colored: Ground tint grayish olive to tea green and 

 light artemisia green, with large patches of rich olive brown, raw umber, and Van 

 Dyke brown. 



Distribution of forma nodiferus. — Southern Alaska to northern Lower California 

 (south of Point Conception as a prevalent form of subspecies segnis). 



'I'lipi locality of Pisaster ochraceus. — Sitka, Alaska. 



Distribution of Pisaster ochraceus. — Southern Alaska to Point Conception, Calif. 



Specimens examined. — One hundred and seventeen in addition to many hundreds 

 from Monterey, and very numerous living examples at Departure Bay, British 

 Columbia. 



Specimens of Pisaster ochraceus examined 



Locality 



Uaska-- 



Kevillagigedo Island, Alaska 



Lucia island, Alaska 



3, Alaska 



Nana Bay, Uaska 



H(iundar> Hay. British Columbia. 



I'nion Bay, Bayne Pound. Britisli Columbia— 

 i Bay, Gabriola Inlet, British Columbia 

 ture Bay (Nanaimo), British Columbia.' 



Port Renfrew, Straits Fuca, British Columbia- 

 Barclay Sound, Vancouver Island 



Port Ludlow, Wash... 



Orcas, San Juan Islands, Wash.'... 



Friday Ilarbor, San Juan Islands, Wash. 



Puget Sound (Slmeahmoo)-.. 



Puget Sound (near Tacoma) 



Bhoalwater Bay, Wash 



Crescent City, ' al I 



Trinidad, Calif 



Humboldt Hay. Calif 



Drake's Bay, Calif 



San Francisco Bay. Calif 



San Francisco Bay (Sausalito) 



I I md , < lalil 



Santa Cruz, Calif 



Monterey Hay (vicinity Point Pinos). 



lay, station 3131 



d, Calif. 



f. och- 

 raceus 



3 

 3 



1 



f. con- f. rwdi- 

 fertus ferns 



Remarks 



> 1 1 



5 2 



Many. 



Ward Cove; T. H. Streets. 

 Noar ochraceus; Albatross, 1894. 

 Nichols. 



1 intermediate; Albatross, 1905. 

 Stanford Coll.; 1 aberrant, F. W, Weymouth, W. 

 F. Thompson. 



1 intermediate. 



U.S.N.M. Coll.; Stanford Coll; Cal. Aoad. Sci. 



Coll.; W. K. Fisher, W. F. Thompson; Albatross. 

 Stanford Coll., J. C. Brown. 

 Albatross. 

 S. Bailey. 

 Cal. Acad. Sci. Coll., Ida S. Oldroyd; confertus 



coarse spined, near ochraceus. 

 Cal. Acad. Sci. Coll., Ida S. Oldroyd; rather coarse 



spines. 

 Dr. C. B. Kennedy. 



Frank Russell, Chas. M. Drake, F. W. Weymouth 

 Dr. J. G. Cooper, type of fissispinus. 

 Stanford Coll., J. O. Snyder. 

 Stanford Coll., F. W. Weymouth. 

 Chas. M. Drake. 

 Albatross. 

 Dr. John Hornuug. 

 Albatross; seine. 

 C. H. Townsend. 

 A. Forrer. 



Hopkins Marine Station. 

 I miles north Df New Monterey, 48 fathoms, rocks; 



intermediate with nodiferus. 

 Carl Ilubbs. 



i At Departure Hay, where I Biological Laboratory is situated, the commonest forma is confertus. There are 



coarser spined ingulshable from ochraceus, and others, in which the spines form very prominent groups 



,ni the outer part of I I nodiferus. 6 of the young examined are referable to nodiferus; 5 others are Interi liate between 



nodift* rtus. 



'The specimens i nit to classify by fonnae; with the exception of the icervate forma they are usually neither 



clearly confetti ' 



' The type of confertus. 



