Report of a 3/ission to Guam. 121 



length 2 into head; fourth, fifth and sixth dorsal spines the long- 

 est, 2.50 into head. Pecftorals equal to distance from posterior 

 margin of opercle to nostril. Base of anal 3.20 into base of dorsal. 

 Caudal rounded, about equal in length to pectorals. None of pec- 

 toral rays branched. Color in spirits: Body mottled with dusky 

 and grayish,, with slight trace of Indian red; the under side of head 

 is white with about 6 distinct brownish cross bauds half as wide as 

 interspaces. Fins grayish, mottled with black and white. Four 

 specimens, length 1.50-2.50 inches. Guam, July 14 ,igoo. Hab. 

 Marianas. Named in honor of Capt. Jesse E. Baker, U. S. A., 

 who.se assistance in the author's field work has been greatly appre- 

 ciated. 



Genus SCORP^NOPSIS Heckei.. 



255. Scorpsenopsis guamensis Quoy & Gaim. 



Head 2.35; depth 3; eye 3; interorbital 2 into eye; length of 

 snout slightly less than eye ; maxillar}' 2.50; D. xii 9; A. iii 5; 

 V. I 5; P. 19. Scales 44; cheeks and opercles scaled. Teeth villi- 

 form in jaws and vomer. Interorbital space concave. No orbital 

 tentacles, no groove beneath the eye. Maxillary reaches to below 

 middle of orbit. vSupraorbitals,- occipitals, opercles and orbitals 

 with acute spines. Color in spirits: Brownish, with marblings of 

 dark brown. One specimen, length about 3 inches. Guam, Jul}' 

 13, 1900. Hab. Malay Archipelago. Marianas. 



Gexus SYNANCEIA Block. 



256-257. Synanceia thersites sp. nov. 



Head, exclusive of skinny flap, 2.50; depth 2.66; eye 8; pre- 

 maxillary 3, very narrow and bearing the villiform teeth of upper 

 jaw; the maxillary flat and wide, its width .slightly greater than 

 orbit: interorbital space fossa-like, 3.50 into head; D. xiii 7; 

 A. Ill 6; p. 19; V. I 5. Numerous dermal flaps on head and body. 

 Head mon.strous and irregularh* .shaped; lower jaw almo.st vertical; 

 the upper margin is on the dorsal surface, its length i .50 into head. 

 Villiform teeth in both jaws, but none on vomer or palatines. Gill- 

 rakers consisting of villiform teeth slightlj' longer at angle, and 

 longer curved teeth on head of pharyngeals. Branchicstegals 7. 

 Pseudobranchise present. Fins: The dorsal is continuous, the soft 

 part highest. Caudal more or less rounded, 2 into head. Ventrals 

 1.20. Pectoral very wide, its base about equal to its longest ray. 

 Color in spirits: The general ground color is almost a sepia brown, 

 darker with a wash of greenish on posterior part. There is a more 

 or less greenish white area near the middle of the body, under 6-8 

 dorsal spines. There is a greenish white band about as wide as 

 eve which forms a band about the middle of the soft dorsal, anal 



