Rep07't of a Missio?i to Guam. 97 



head. Fins: The caudal is slightly rounded, its length 1.66 into 

 head. The longest ra}^ of pecftoral is 1.50 into head, its base 4.50. 

 Base of anal is 1.50 into head, 2.25 into base of dorsal. The ven- 

 trals are short, about 2 into head — about equal to longest dorsal 

 spine. Color in spirits: Olive brown, the scales covered with 

 slightly darker centres. All the fins, with the exception of the 

 pecftorals, are black. Pecflorals yellowish white, teeth j^ellowish 

 white, chin whitish, iris yellowish. The young are similarly 

 colored. Two specimens. Length 3-6 inches. Agafia, Guam, 

 July 14, 1900. This species is chiefl}' charadlerized by the very 

 broad yellowish teeth, which give the snout a very blunt — almost 

 square — tip; by the narrow lip, and the uniform coloring of the 

 body. Hab. Marianas. Type No. 162 B. P. B. M. 



163. Pseudoscarus sumbawensis Bl. 



Head 3; depth 3; eye 5.50; interorbital 3.25; D. ix 10; A. 11 9; 

 V. I 5; P. 14. Scales 2-24-5. Body oblong, compressed. Upper 

 jaw slightly the longer. A sharp canine tooth at angle of upper 

 jaws. Two rows of scales on cheek. The lower preopercular limb 

 is naked. Upper lip very broad, almost covering the upper teeth. 

 The pharyngeal teeth pavement-like, their width 2 into their 

 length. Lateral line is interrupted. Fins: Caudal is emarginate, 

 wnth angles produced. Pedtorals 1.25 into head. Ventrals 1.25. 

 Base of anal 1.50 into head, 2.50 into base of dorsal. Color in 

 spirits: Violet-olive. Dorsal, anal and caudal fins darker. Ven- 

 trals and pe(5lorals yellowish. Two specimens. Length 3-7 inches. 

 Guam, July, 1900. Hab. Marianas. 



Family CH^TODONTID^.— Coral-fishes. 



Genus CH>^T0D0N (Artedi) Linn^us. 



164-168. Chsetodon ephippium Cuv. & Val. 



Head 3.88; depth 1.66; eye 3.50; interorbital 4; D. xiii 23; 

 A. Ill 22; V. I 5. Scales 9-37-14. Body elevated and strongly 

 compressed. The snout rather produced, the lower jaw longer. 

 Lower edge of the preopercle slightly serrated. Branchiostegals 6. 

 Teeth setiform. Fins: Dorsal spines are of moderate strength, the 

 longest spine 2 into head. Posterior part of dorsal and anal rounded, 

 the soft dorsal has a short projedling filament. Caudal square, the 

 longest ray 1.50 into head. Color in spirits: Yellowish white with 

 about 9 indistinct brownish longitudinal lines, half as wide as iris, 

 below the axis. A big black patch broadly edged with white an- 

 teriorly occupies all the upper pOvSterior part of the fish, including 

 most of the dorsal fin. Posterior edge of the dorsal yellow, fol- 

 lowed by a narrow black line and terminally tipped with white. 



O. p. B. p. B. M.— Vol. I., No. .^. 



