ANGUILLIDJE. 49 



Colour, dark greenish-brown, becoming yellowish on the under 



aspect. 



Total length, 19-68 in. Length of tail, 11 03 in. To the gill- 

 openings, 2-95 in. Length of the pectoral, 091 in. Height of the 

 body, 1-57 in. Height of the dorsal fin, 043 in. 



(Leyden Museum, ancient collection.) 



95. Anguilla mackops, fig. 38. 

 Anguilla raacrops, Kaicp. 



Diameter of the large eye contained once and a half in the 

 length of the snout. Pupil placed directly over the corner of the 

 mouth. Pectoral evidently longer than the mandible. By the dis- 

 tance between the tip of the snout and the pectoral being half of 

 that between the pectoral and dorsal, the species is distinguished 

 from the closely-resembling rnalgumora (No. 82). 



Colour of the dorsal aspect, olive-green, with fine dark points, 

 contrasting with the yellowish belly. Dorsal fin of the same tint 

 with the back, but having a lighter border. Palatine teeth occu- 

 pying narrow spaces ; and the vomerines running backwards to the 

 fore border of the eyes. 



Total length, 22-05 in. Length of tail, 12-80 in. To the cor- 

 ner of the mouth, 0-67 in. To the pectoral, 2-48 in. To the dorsal, 

 7-29 in. Length of the pectoral, 0-83 in. 



96. Anguilla angustidens, fig. 39. 

 Anguilla angustidens, Kaup. 



The above specific appellation is given to this eel on account of 

 the dental surfaces of its upper jaw being laterally pressed together. 

 Eye large, and placed with its pupil over the corner of the mouth. 

 Its diameter (= 0-276 in.) is contained once and five-sevenths in 

 the length of the snout (= 0-473 in.). The pectoral (= 0-945 in.) 

 is much longer than the mandible, measured to the corner of the 

 mouth (= 0-630 in.). The distance between the tip of the snout 

 and the pectoral (= 2-284 in.) is comprised once and seventeen- 

 twenty-ninths in the length of the space between the pectoral and 

 dorsal (= 3-623 in.). Dorsal fin very low. 



■ Upper parts coloured dark olive-green, with innumerable points ; 

 under the lateral line, a silvery gray ; while the belly and base of 

 the pectoral exteriorly are yellowish. The outer surface of the pec- 

 torals is dotted with black, and their inner surface has the same tint 

 with the back. 



Total length, 1850 in. Length of tail, 10-24 in. Height close 

 to the pectoral. 102 in. 



(Paris Museum.) 



n 



