2 I 8 Memoir Sears Foundation for Marine Research 



Body: depth 20, 17.4. 

 Head: length 23.7, 24.2. 

 Snout: length 4.5, 5.0. 

 Eye: diameter 7.5, 7.0. 

 Postorbital: distance 10.7, 14.2. 

 Maxillary: length 12.5, 13.3. 

 Mandible: length 14, 13.8. 



Anal fin: length of base 16.8, 15.5. 

 Pectoral fin: length 15.2, 16.8. 



Scales: ca. 4.1, 38. 

 Gill rakers: 16 + 22, 17 + 24. 

 Fin rays: dorsal 13, 14; anal 18, 19; 

 pectoral 12, 13. 



Body compressed, its depth 5.0, 5.7 in SL. Head 4.2, 4.1 in SL, its depth about 

 equal to its postorbital part and half of eye. Snout projecting nearly half of its length 



Figure 47. Anchoviella guianensis, 62 mm TL, from Amazonas, Brazil, CNHM 15480. Drawn by Louella 

 E. Cable. 



beyond mandible, c^.'^^ 4.9 in head. Eye 3.2, ';>^.Cj. Postorbital rather short, 2.2, 1.8 

 in head. Maxillary extending about 75 "/o of diameter of eye beyond orbit, but not 

 to joint of mandible, 1.9, 1.8 in head. Mandible 1.7, 1.75. Cheek broad, very 

 slightly longer than eye, its posterior angle about 60°. 



Dorsal fin with longest rays reaching somewhat beyond tip of last ray if deflexed, 

 its origin equidistant between tip of snout and caudal base. Anal originating under, 

 or a little in advance of, base of last dorsal ray, its base 5.95, 6.5 in SL. Pelvic inserted 

 equidistant between pectoral base and anal origin. Pectoral failing to reach pelvic by 

 diameter of pupil, 1.55, 1.45 in head. Axillary scale of pectoral narrow, reaching 

 well beyond midlength of pectoral, 2.4, 2.45 in head. 



Color. In alcohol, pale (probably preserved originally in formalin). Side of head 

 silvery. Pale streak, probably silvery in life, on side. Back with dark punctulations 

 arranged in two more or less definite rows behind dorsal fin; dusky punctulations along 

 base of anal, and a median dark stripe behind anal; paratype with dusky punctulations 

 present also on dorsal, caudal, anal, and upper rays of pectoral. 



Range and Habitat. Its range extends from Trinidad, B.W.I., and Venezuela to 

 northern Brazil and the upper Amazon Basin in Bolivia. In addition to the holotype 

 from Bartica Rocks, British Guiana, Eigenmann had paratypes from the Morawhanna 



