Fishes of the Western North Atlantic 



273 



Body shaped in all respects as in lamprotaenia^ its greatest depth 5.7—6.6 In SL. 

 Caudal peduncle 3.2—4.0 in head. 



Scales as in lamprotaenia, except that there appear to be a few more in a lateral 

 series. 



Head low, with exceedingly numerous mucous canals and pores, its length 3.7- 

 4.0 in SL. Snout equal to, or more usually a little shorter than, eye, 3.2—3.8 in head. 

 Eye 2.9—3.5. Interorbital 5.5-7.1. Maxillary narrowly rounded posteriorly, gen- 

 erally reaching vertical from anterior margin of pupil, 2.45—2.6 in head. Mandible 

 slightly included, about coterminal with the snout, 2.0-2.2 in head. Gill rakers very 



Figure 65. Jenkinsia viridis, 45 mm TL, from Bermuda, USNM 100546. After Rivas. 



close-set, those at angle rather more than half of length of eye. Teeth apparently in 

 all respects as in lamprotaenia. 



Dorsal fin elevated anteriorly, the longest rays reaching far beyond tip of last 

 ray it deflexed, the fin generally beginning about half of an eye's diameter nearer to 

 margin of snout than to base of caudal, the distance from margin of snout 2.0-2.25 in 

 SL. Caudal fin as in lamprotaenia. Anal lower than dorsal, its origin about equi- 

 distant between insertion of pelvic and base of caudal, its base 1.8-2.2 in head. Pelvic 

 fin only a little shorter than pectoral, inserted under the 4th or 5th dorsal ray and 

 about equidistant between anterior margin of eye and base of caudal, its length 1.55— 

 2.2 in head. Pectoral fin pointed, inserted a little nearer to tip of mandible than to 

 base of pelvic fin, 1.55— 1.8 in head. 



Color. In all respects as in lamprotaenia. 



Size. The largest specimens at hand, 55-58 mm TL (2.2-2.3 '^^•)i "^^7 be near 

 the usual maximum length attained. 



Food. Although no specific information is at hand, there seems to be no reason to 

 believe that the food of this species differs from that of lamprotaenia. 



Enemies. No enemies have been listed. However, there can be no doubt that 

 predatory fish and water birds feed on this species as they do on lamprotaenia. 



Relationships. As stated in the account of lamprotaenia^ the two species of this 



18 



