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BULLETIN OF THE UNITED STATES FISH COMMISSION. 
spinous dorsal about midway between tip of snout and middle of soft dorsal; space between dorsals 
scarcely half orbit; dorsal and anal rays, when depressed, not reaching base of caudal; pectoral long, 
nearly reaching vent; ventral disk broad and free; caudal rounded. 
Color, pale-olivaceous or yellowish, with a series of about 8 large black blotches along middle of 
side; back and head blotched and vermiculated with dark; under parts pale; dorsals and caudal with 
alternate bars of light and dark; pectoral dusky; ventrals and anal pale. 
This goby reaches a length of a foot or more. It is extremely variable in form and coloration, 
as is the case with most widely distributed fresh-water fishes. It is found in the fresh waters of the 
West Indies and on both coasts of Mexico, south to Brazil; common in Cuba, in Sinaloa, and about 
La Paz in Lower California, thence southward to Panama. It is also common in the fresh and 
brackish waters of Porto Rico, specimens being obtained from the Bayamon River near Bayamon, the 
Rio de Caguitas at Caguas, and from a brackish pool on Vieques Island just west of the town of 
Isabel Segunda. It is of some value as food. 
Amore guacu, Marcgrave, Hist. Brasil., 166, 1648, Brazil. 
Gobius taiasica Lichtenstein, Berl. Abhandl., 273, 1822, Brazil; not Taiasica of Marcgrave. 
Gobius banana Cuvier & Valenciennes, Hist. Nat. Poiss., XII, 103, 1837, Santo Domingo. 
Gobius martinicus Cuvier & Valenciennes, Hist. Nat. Poiss., XII, 105, 1837, Martinique. 
Chonophorus bucculentus Poey, Memorias, II, 275, 1861, Cuba. 
Bhinogobius contractus Poey, Mem., II, 424, 1861, Cuba; Poey, Fauna Puerto-Riq., 338, 1881; Stahl, 1. c.,78 and 165, 1883. 
Gobius dolichocephalus Cope, Trans. Amer. Philos. Soc. Phila. 1869, 403, near Orizaba, Mexico. 
Euctenogobius latus O’Shaughnessy, Ann. Mag. Nat. Hist., series 4, XV, 1875, 146, Bahia. 
Awaous taiasica , Jordan & Evermann, 1. c., 2236, 1898. 
Fig. 92. — Bollmannia boqueronensis. 
Genus 140. BOLLMANNIA Jordan. 
This genus differs from Lepidogobius in having no fleshy processes on inner edge of shoulder- 
girdle, the interorbital area of skull narrower and without trace of median keel, and in the very large 
ctenoid scales. From Gobius proper it is distinguished by the presence of 7 dorsal spines and by the 
presence of large scales on cheek. The genus Bollmannia has now five known species, B. chlamydes, B. 
ocellata, B. macropoma, B. stigmatura, and B. boqueronensis. The first of these was described in 1889 
by Dr. Jordan from the west coast of Columbia and the next three by Dr. Gilbert in 1891 from the 
Gulf of California. Not until the last species was obtained by us off Porto Rico was the genus known 
to have any representative in the Atlantic. All the species are found only at considerable depths, and 
do not inhabit shoal water, as is the case with most other gobies. 
252. Bollmannia boqueronensis Evermann & Marsh. 
Head 4; depth 5.5; eye 3.5; snout 4.4; maxillary 2.2; mandible 2.5; interorbital width 3 in eye; 
preorbital 6; scales 27,-8; D. vii-13, the longest spine 1.5 in head, the longest ray 1.2; A. 12, the 
longest ray 1.25 in head; pectoral 0.75; ventrals 1.1; caudal 0.4. Body long, slender, tapering; head 
short; snout blunt; mouth large, oblique; jaws subequal, maxillary reaching posterior border of pupil; 
isthmus narrow, gill-openings reaching forward to below preopercle; eyes large, high, close together, 
interorbital very narrow and without median keel; no fleshy process on inner edge of shoulder-girdle; 
teeth on jaws in narrow bands, those of outer series somewhat enlarged; opercle short, about 3 in 
