246 EMBIOTOCID^. 



Embiotoca ornata, Girurd, Proc. Acad. Nat. Sc. Philad. 1855, p. 321, and 

 U.S. Pacif. R. R. Exp. Fish. p. 176. pi. 26. fig. 11. 



perspicabilis, Girurd, Proc. Acad. Nat. Sc. Philad. 1855, p. 321, and 



U.S. Pacif. R. R. Exp. vii. p. 178. pi. 26. figs. 1 & 2, xii. pt. 2. p. 357. 

 pi. 32 ; S'ucUey S,- Cooper, Nat. Hist. Wash. Terr. p. 357. pi. 32. 



Tseniotoca lateralis, Agass. Proc. Post. Sac. Nat. Hist. 1861, p. 133. 



D. ii. A. ^^. L. lat. 60. L. transv. 8/18. 



The middle and posterior dorsal spines are of nearly equal length, 

 shorter than the anterior rays. Scales on the cheek in three series. 

 The height of the body is contained twice and a thii-d in the total 

 length (without caudal). Upper jaw a little longer than the lower. 

 The fold of the lower lip is interrupted in the middle. The maxil- 

 lary does not quite extend to below the anterior margin of the orbit. 

 Anal fin with a yellowish streak along the base. 



a. Adult. San Francisco. From the Boston Museum. 



b. Adult : not good state. Puget Sound. Presented by the Smith- 



sonian Institution. 



c. Adult: skin. Victoria Harbour (Vancouver Islands). Presented by 



Earl Russell. 



3. Ditrema temmiackii. 



Ditrema, ScMeg. Fatm. Japon. Poiss. p. 77. pi. 40. fig. 2. 



Ditrema temmiackii, Bleek. Verh. Batav. Genootsch. xxv. Japan, p. 33. 



laeve, Giltith. Acanthopt. Fishes, ii. p. 392. 



D. i5. A. §^. L. lat. 76. L. transv. 10/18. 



The dorsal spines become gradually higher posteriorly, the last 

 not being much shorter than the first ray. Scales on the cheek in 

 five series. The height of the body is two-fifths of the total (with- 

 out caudal). Jaws equal in length anteriorly ; the maxillary does 

 not extend to below the front margin of the eye. Lips rather thin, 

 the fold of the lower being interrupted in the middle. The spinous 

 dorsal edged with black. 



a. Nine inches long : stuffed. Japan. Pui'chased of Mr. Frank. 

 h. Half-grown. From Dr. P. v. Bleeker's Collection. 



The discovery that this species is naturally allied to the Embioto- 

 cidce of the North American ichthyologists is due to Mr. GUI, who 

 communicated it to me in 1861. I had erroneously placed it among 

 the Nomeina, from which it differs externally in having one con- 

 tinuous dorsal fin. 



4. Ditrema vacca. 



Damalichthys vacca, Girard, Proc. Acad. Nat. Sc. Philad. 1855, p. 321, 

 and U.S. Pacif. R. R. Exp. x. Fishes, p. 182, xii. pi. 33 ; Suckley 8f 

 Cooper, Nat. Hist. Wash. Teir. p. 358. pi. 33. 



D. 12. A. ^. L. lat. 61. L. transv. 7/16. 



The dorsal spines become gradually higher posteriorly, the last 

 being much shorter than the first ray. Scales on the cheek in four 

 series. The height of the body is two-fifths of the total length 

 (without caudal). Upper jaw longer than the lower ; the maxillary 



