52 



there is a short villiform band between the canines and movable teeth ; 

 on the upper jaw the movable teeth are intermediate between the canines 

 and villiform band. Teeth on the vomer and palatines ; on the first- 

 named forming a triangular band. The prseoperculnm slightly notched 

 above the angle ; the posterior margin and angle finely serrated ; the 

 inferior border as well as the free margins of the sub- and interoper- 

 culum smooth. The membranous border of the operculum jDroduced 

 behind the spines to an acute point; the middle of the three spines the 

 largest, and placed nearer the lower than the upper spine of the border. 

 The dorsal fin commences directly above the base of the pectoral; the 

 third and fourth spines are the longest, but shorter than the posterior 

 rays of the soft dorsal ; first spine about one-half the length of the sec- 

 ond. Spinous portion of the fin lower than the soft ; the posterior rays 

 of the latter the longest. Anal commences about under the sixth soft 

 dorsal ray, and ends before the termination of the dorsal ; the first spine 

 very short, the second more than one-half the length of the third ; the 

 anterior rays prolonged, the fifth and sixth the longest ; the posterior 

 border emarginate. Pectorals rounded posteriorly, about one-half the 

 length of the head, a large fleshy flap in the superior axil. Veutrals 

 somewhat shorter than the pectorals, and commence just behind their 

 base, and do not extend to the vent. Caudal slightly emarginate, and 

 constitutes about one-fifth of the total length of the body. 



Color (in life) uniformly rosaceous; (in alcohol) golden-yellow. 



Total length, 20.50 inches ; height, 5.50; head, G.50. 



Locality: Gulf of California, in the vicinity of Angel Island. 



DIPLECTEUM EADIALIS, (Q. d; G.) Streets [No. 17550]. 



Sen-anus radialis, QuOY & Gaimahd, Voy de Freyc, Poiss., 1824, 316.— Cuv. & Val. 



Hist. Nat. des Poiss., ii, 1828, p. 243. 

 Centropristis radialis, Guxther, Cat. Fishes, i, 1859, 83. — Steindachnek, Sitzb. der K. 



Akad. der Wiss., Isxii, 1875, Ichthyologische Beitrtige, iv, 6. 

 Centropristis ayresi, Steindachner, Sitzb. d. K. Akad. d. Wiss., Ivii, 1868, Ichythyolo- 



gische Notizen., vii, 1, pi. 1, f. 1. 

 Centropristis macropomus, GiJnther, Trans. Zool. Soc. London, vi, 1869, 409, pi. 65, f. 1. 



D. -1-0. A. f. L. lat. 50. L. trans. ^\. 



Angle of the prseoperculum enlarged, rounded, striated, and armed 

 with strong spines ; those of the right side showing a tendency to separate 

 into two fasciculi, as in D. fascicularis ; a notch above the angle ; the pos- 

 terior margin oblique and finely serrated ; the inferior border serrated, 



