348 KEVIEW OF SPECIES OF BELONIDJE. 



of being- completely closed. Eye large, distinctly larger than in T. 

 suhtruncatus, its diameter a little less than interorbital width, 2^ in 

 post-orbital part of head, and 6 in the snout. 



Teeth small and slender, those of the inner row on each side in each 

 jaw fewer and smaller than in T. notatus. Teeth, bones, and scales not 

 green. 



Maxillary almost entirely covered by the preorbital. 



Interorbital space with a rather broad and deep median groove, 

 •which is widened and scaly anteriorly, with a slight median ridge. 

 Superciliary ridge rather sharp, temporal ridge less acute, all the 

 bones of upper part of head with rather sharply defined ramose ra- 

 diating striae. A sharp notch in the temporal ridge, close behind 

 eye. Vertex nearly flat, with a blunt ridge on either side. No dis- 

 tinct fold of skin on lower posterior edge of preopercle. 



Cheeks with moderate scales, in about 12 series. Opercles with very 

 small scales. 



Scales small, not green. 



No gill-rakers. 



Dorsal fin rather short and low, the last rays short, the anterior lobe 

 IJ in postorbital part of head. Base of fin half more than postorbital 

 part of head. Anal longer and higher than dorsal and beginning a 

 little before it. Caudal subtruncate, with the lower lobe produced, 

 the lower lobe about equal to postorbital part of bead. Pectorals 1| 

 in postorbital part of head. Veutrals If; their insertion midway 

 between base of middle caudal rays and posterior margin of pupil. 



Color dusky greenish above, the dark color produced by dark puu(itu- 

 lations. Sides and bellypale. A well-defined dark-bluish lateral stripe 

 which is narrow and sharply defined toward the head, becoming broader 

 behind the middle of the body. An obscure dusky streak along middle 

 of back. A faint dusky bar on front of opercle. Axil dusky. Fins 

 all dusky olivaceous, the tips darker, except in the pectoral, which is 

 rather pale. Lining of opercles dark. 



A single specimen obtained by Dr. Jordan in the market at Havana 

 furnishes our knowledge of this species. It is very close to T. suhtrun- 

 catus^ but it is more robust, with larger eye and somewhat different 

 sculpture of the boiuss of the head. 



Dr. iiean has compared the type of T. euryops with the types of B. 

 depressa and T. sagitta, and notes the same differences. 



Poey seems not to have distinguished this fish from his subtruncata 

 and depressa. 



6. Tylosurus diplotaenia. 



Belone diploUcnia Cope, Trans. Am. Philos. Soc, 1871, 481 (St. Martin's). 



Habitat. — West Indian Fauna. 



This species is known to us only from the description of Professor 

 Cope. 



