284 



BULLETIN 76, UNITED STATES NATION.iL MUSEUM. 



3. Lavender and purplish or brown. 



a. Ground color lavender, more or less pinkish, mottled on disk and rays, or 

 on rays only with reddish or purplish brown, or more rarely with yellowish brown. 

 Intermediates in ground color between 1 and .3 occur. 



4. Various shades of pink or pale lavender (all small specimens). 



a. Very pale rose pink, nearly white below. 



b. Very pale lavender and lilac. 



c. Shades intermediate between these and light yellowish brown. 



Type. — An authentic specimen, labeled by Stimpson, in the U. S. National 

 Museum is perhaps the type; if not, it is at least a topotype. 



Type-locality. — Puget Sound, Washington. 



Distribution.— -From Aleutian Islands, Alaska, to Monterey Bay, California, 

 in a typical form, and thence south to the Santa Barbara Channel, and San Diego, 

 California, the southern forms not being typical. The typical form is found along 

 shore at low tide, or in comparatively shallow water. Bathymetrical range, low 

 tide to 53 fathoms. 



Specimens examined. — Three hundred and forty-two, from the following 

 stations. (The letters after the number of specimens indicate the varieties as 

 detailed under variations.) 



Specimens of Ilcnricia leviuscula examined. 



2S(>4a.. 

 2865... 

 2874... 

 28750.. 

 288Ca.. 

 2887... 

 2913... 

 2951... 

 3052... 

 3053... 

 3054... 

 3087 6.. 



3444. 

 3593 c 

 3595.. 

 4205. 

 4209. 

 4431c 



Straits of Juan de Fuca 



Admiralty Inlet, Washington. . . 

 Off Cape Flattery, Washington. 



Ofl Oregon., 



Cortes Bank ofl San Diego. 



Ofl Santa Cruz Island 



Ofl Heceta Bank, Oregon. . 



.do. 



Ofl Alseya River, Orego 



.do. 



Straits of Juan de Fuca 



Admiralty Inlet, Washingto 



Off Santa Cruz Island, California 



Near Semisopochnoi, .\leutian Islands. 

 Monterey, California 



Point Pinos, Monterey Bay, Cali- 

 fornia. 



Capitola, Monterey Bay. 



26-15 

 25-24 

 3(M1 



Low 

 tide. 

 Low 

 tide. 



Nature of bottom. 



mud, sand, broken shells. 



pebbles 



rocks and shells 



.do. 



rocky 



coral and pebbles 



broken shells 



fine gray sand 



coral, broken shells, rocky., 

 ....do 



IJD 

 211 BCD 

 3 B D 



Dcky. 



coral and pebbles., 

 ....do 



green mud, pebbles 



rocky 



rocky, gravel, sand 



rocks, shells 



rocky, coarse sand, shells 



mud, gray sand 



broken shells, pebbles, sand. 



15 A B 

 3B 



U. S. Nat. Mus. 



1 -\ 



Albatross, 1903. 



Do. 

 Albatross, 1904. 

 Albatross, 1906. 

 U.S. Nat. Mus., W.H. 



Dall. 

 U. S. Nat. Mus., H. 



Hemphill. 



Stanford University. 

 Do. 



o Some not at all typical. 



dMore or less aberrant variety. Dorsal and marginal plates somewhat smaller than in typical leviuscula, and spinelets 

 a trifle more delicate. Some examples with either one or both of the furrow spinelets spatulate and truncate. The specimens 

 are variable. 



c Aberrant variety. 



