384 SYNOPSIS. 



OrEN. LXI. HEMIRAMPHUS. Upper jaw short, the under 

 jaw excessively elongated and pointed; dorsal and anal tins 

 entire. 



Sp. 120. H. Europeus. European Half-beak. Body long, 



slender, and compressed, the relative position of the fins 



nearly as in the two preceding genera ; sides of the tail 



straight, extremity forked ; colour of the back bluish 



green, with a few spots ; belly silvery. Mag. Nat. Hist., 



1837, p. 505 ; Yarr. Brit. Fish., i. 450. 



GEN. LXII. EXOCCETUS. Head and body covered with large 



scales ; pectoral fins enormously developed ; dorsal and anal 



long and corresponding ; tail forked, the upper lobe smallest ; 



branchiostegous rays ten. 



Sp. 121. E. volitans. Common Flying-fish. Pectorals reach- 

 ing to the commencement of the caudal ; ventrals small, 

 and placed before the middle ; both jaws with small teeth ; 

 a row of carinated scales along the bottom of each flank. 

 Linn., Perm. Brit. Zool., iii. p. 441, pi. 78; Don. Brit. 

 Fish., pi. 31 ; Yarr. Brit. Fish., i. 453. 

 Sp. 122. E. exiliens. Great Flying-fish. Pectoral fins reach- 

 ing beyond the commencement of the caudal; ventrals 

 very long and placed far backwards ; tail bilobed, the up- 

 per lobe smallest ; colour of the upper parts fine blue, 



belly white Bloch, pt. xii. pi. 397 ; Yarr. Brit. Fish., L 



458. 



FAM. XV. Siluridce. Body without true scales; skin either 

 n-aked or covered with bony plates; dorsal and pectorals almost 

 always with a strong articulated spine for the first ray, and an 

 adipose fin is frequently present; upper jaw formed by the inter- 

 maxillaries. 



GEN. LXIII. SILURUS. Skin covered with an unctuous se- 

 cretion ; mouth provided with several long barbules ; dorsal 

 very small, no adipose fin ; anal very long. 



Sp. 123. S. glanis. Sly Silurus, or Sheat-fish. Head broad 

 and flat, the mouth very large, both upper and under lip 

 with barbules, those on the former very long ; back of a 

 dark green colour, pale green below the lateral line, the 

 whole covered with dark blotches ; pectoral fins dark blue 



