Jordan and Evermann. Fishes of North America. 



2683. ARBACIOSA HUMERALIS (Gilbert). 



Head 3 to 3|; width of body 4; width of head 3f; eye very small, 3 in 

 interorbital width. D. 8 or 9; A. 7. Body of moderate width, the head 

 not evenly rounded anteriorly, becoming contracted opposite eyes, the 

 snout forming a quadrate projection beyond the profile, as seen from 

 above. Teeth in a single series in each jaw, the anterior narrow inci- 

 sors, trilobate at tip, the 2 posterior teeth on each side strong, conical 

 canines, somewhat recurved ; about 12 incisors in the upper jaw. Inter- 

 orbital.space very wide, about equaling width of mouth, 2^ to 2 in length 

 of head. Ventral disk about as wide as long, its length 1 \ in head. Oper- 

 cular spine large and strong, but not exposed. Distance from front of 

 dorsal to base of caudal 3 in length anterior to dorsal ; base of dorsal If 

 in head ; base of anal about equals base of dorsal ; distance from vent 

 to front of anal half its distance from disk ; caudal broadly rounded, If in 

 head; pectoral \ head, without distinct fold of skin across it. Ground- 

 color dark olive brownish, crossed by many carmine-red bars, these some- 

 what broken anteriorly and above, to form reticulating lines, posteriorly 

 and on lower part of sides more regular and running obliquely down- 

 ward and backward; a conspicuous round humeral spot, larger than 

 eye, in life black with golden-green reflections; numerous streaks from eye 

 backward across cheek and opercles. (Gilbert.) Gulf of California; 

 abundant at Puerto Refugio (Angel Island) ; also known from La Paz. 

 (humeralis, pertaining to the shoulder, humerus.) 



Gobiesox humeralis, GILBERT, Proc. U. S. Nat. Mus. 1890, 95, Puerto Refugio, Gulf of 



California. (Coll. Albatross.) 

 Arbaciosa humeralis, JORDAN, Proc. Cal. Ac. Sci. 1896, 230, pi. 35. 



2684. ARBACIOSA RUPESTRIS (Poey). 



Head 4 in total length with caudal; depth 6; eye 4 in head; snout less 

 than eye. D. 7 ; A. 7. Forehead little decurved ; eyes well separated ; 

 mouth small, with 1 row of compressed, close-set incisors with denticu- 

 lated edges, 6 on each side in each jaw; snout truncate, as seen from 

 above. Pectorals short, rounded. Dorsal and anal alike, opposed, highest 

 in front. Caudal rounded. Color greenish ash, each side with 6 large 

 oval spots, those behind touching ; sides with about a dozen vertical bands 

 of straw yellow or whitish, these bauds sometimes interrupted, forming 

 2 series of points ; 2 small similar bands from the eye, another toward tip 

 of snout ; a brown pale-edged band between eyes ; some white spots on 

 sides of head. Length 1| inches. Coral reefs of Cuba ; not rare. (Poey) : 

 not seen by us; said to be distinguished from other Cuban species by the 

 slender body and narrow head, (rupestris, living among rocks.) 

 Gobiesox rupestris, POEY, Memorias, n, 283, 1861, Cuba. 

 Sicyases rupestris, POEY, Synopsis, 391, 1868; POEY, Enumeratio, 124, 1875. 



2685. ARBACIOSA ZEBRA (Jordan & Gilbert). 



Head 3f in length; depth nearly 8. D. 6 or 7; A. 5 or 6; vertebra 11 + 

 17=28. Body comparatively very long and narrow, the greatest width 

 about | the total length. Head narrow, depressed, its width about 4 



