1894. PROCEEDINGS OF THE NATIONAL MUSEUM. 385 



Proc. U. S Nat. Mns., iv, 1881, p. 8 (1882), (Monterey)— Johdax aud Gili!ei?t, 

 /. c, p. 56; Jt)i!i)AX, Cat. Fish. N.Am., p. 107, 188.5— EiOKNMANNaud Ei<;ex- 

 MANN, Notes S;:n Diego ISiol. Lab., i, \). 7, and ii, p. 1, 1889 (.San Diego). 

 Habitat.— San Diego to Monterey. 



4. ACUTOMENTUM ALUTUM, (lilhert. 



Sehasiiehfhys alntiim, Gilbert, I'roo. U. S. Nat. Mns., xiii. 1S!»(), p. 76 (1801) 



(coast of California sontli of Point Conception). 

 Sebastodcs ahitnin, EiiiEXMAXX and Eujenmaxx, Ann. N. V. Acad. ,Sci., 1892, 



p. 354. 

 Habitat. — Coast of Sontliern California. 



This species seems to resemble aS'. rufus. If the paiietals are separate 

 it must be transferred to ASV'^rts^ow^.v. The species is known from the 

 types only. 



IV. Genns P li I M O S P I N A , Eigcnniann and J', ecson. 



Primospiua, EiGENMAXX and Peesox', Araer. Nat., July, 1893 («y(//.s//;n/.s). 

 Tvi'i:. — Sehaslichthiis vtij.stiiinii, Joijdax and Gilbert. 



This genus is comi)ose(l of only two variable species. The skull is 

 thick, and there is greater variation in the presence or absence of spines 

 in (liferent individuals of the same species, than in any other genus. 

 Preocular spines are always developed, but supraocular and tympanic 

 spine are present in some individuals and not in others. The parietal 

 ridges end in spines in one species but not in tlie other. From this 

 genus as a center have been developed in one direction the genera 

 ^ehastosomus, SehastodeH, and Sehastomus. In another direction Ptero- 

 p<Kiu.s, Aucio^phta^ and still in anotlier Acntoincntinn and Seh((sti('}ithys 

 have become differentiated. 



AXAI.YSLS OF rill'', SPI-.CIES ol' I'RIMi )S1'1XA. 



(I. Parietal ridges not terminating in spines. (>l)long, de]>tli 2| ; slaty Idack, paler 

 below the lateral line ; sides more or less mottled m ystixi'S, 1. 



iia. Parietal ridges ending in spines. Oblong elongate, depth 3j: ; dull olive green; 

 sides with obscure round, rusty spots extoaielas, 2. 



1. PRIMO.SPINA MV.STINU.S (.I..rdan and (liMx-rt). 



Schdfilcti variabilis, A\'iuis, Pi-oc Cal. Acad. Sci., i, p. 7, 18.">4 (San ]'"raiiciseo). 



[not of Pallas.] 

 Sehastodes mdn)iops, Ayres, Proc. Cal. Acad. Sci., ii, p. 2U) (in ])art). 

 Sebastichthys melanops, Jordax and (jIilbert, Proc. V. S. Nat. 3Iiis., iii. ISSO, p. 



287. — Eigenmanx and Eigen.aianx, Notes San Diego lUol. Eali., i, i>. ."i. and 



II, p. 1, 1889 (Cortes Bank, San Diego). 

 Sebasticlithi/s miistiiiiif<. Jordan and Gilbert, Proc. U. S. Nat. Mus., iii, JSSO, p. 



455 (1881), (Puget Sound, San Francisco, Monterey, Santa Barbara, San 



Pedro, San Diego).— Jordan and JouY, Proc. IT. S. Nat. Mus., iv, 1881, p. 



8 (1882), (Monterey, San Francisco). — Jordan and Gilbeiit, /. c, p. 70. — 



Bean, I. c, p. 265 (Puget Sound).- Jordan, Cat. Fish. N. Am., p. 107, 1885 



(California). 

 tSebastodcs mystinns, Jordan and Gilbert, Syn. Fish. N. Am., p. 659, 1883 (['uget 



Sound to San Diego). — Ekjenmann and Eigexmanx, Proc, U. S. Nat. Mus., 

 Proc. IS^. M. 94 25 



