356 SYNOPSIS. 



Brit. Fish., i. p. 97 ; Jenyns' 1 Brit. Vert., p. 350 ; Edin. 

 New Phil. Journ., April 1831, p. 386. 



Sp. 31. G. pungitius. Ten-spined Stickleback. Sides with- 

 out plates ; dorsal spines nine or ten. Fin-rays, D. ix -f 1 : 

 P. 1 1 : V. 1 + 5 : A. 1 + 9 : C. 12. Linn., Cm. $ Vol., iv. 

 p. 506 ; Perm. Brit. Zool , iii. p. 335, pi. 61 ; Don. Brit. 

 Fish., pi. 32; Jenyns' Brit. Vert., p. 350; Yarr. Brit. 

 Fish., i. p. 99. 



Sp. 32. S. spinachia. Fifteen-spined Stickleback. Dorsal 

 spines fifteen ; body much elongated, lateral line armed 

 with large pointed imbricated scales, which render the 

 posterior half of the body quadrangular, the anterior part 

 pentagonal ; snout very much produced, the under jaw 

 longest ; colour of the upper parts greenish brown, sides 

 yellowish, belly silvery white. Fin-rays, D. xv + 6 : P. 1 : 

 V.2 : A. 17 : C. 12. Linn., Guv. $ Vol., iv. p. 509; 

 Yarr. Brit. Fish., i. 'p. 101. Spinachia vulgaris, Flem. 

 Brit. An., p. 219. 



Obs. This species differs in many respects from the 

 other Gasterostei, and has therefore been regarded by 

 several authors as a separate subgenus, a rank to which it 

 seems fully entitled. 



FAM. III. SCIENID^E. Fam. of the Maigres. Preoperculum 

 denticulated, operculum with spines, body and head entirely 

 covered with scales ; mouth slightly protractile; no teeth on the 

 renter or palatines. 



GEN. XIV. SCI^NA. Operculum ending in one or more 

 spines ; dorsals two, the second long ; branchiostegous mem- 

 brane with seven rays ; a row of pointed teeth in each jaw ; 

 thin without a barbule. 



Sp. 33. S. aguila. The Maigre. Of a uniform silvery grey, 

 inclining to brown on the bnck and to white on the belly ; 

 first dorsal, pectorals, and ventrals, red ; first dorsal with 

 the third spine very long. Fin- rays, D. 9 1 +27 : P. 16 : 

 V. 1+5 : A. 1+8 : C. 17. Cuv. $ Vol., t. v. p. 28, 

 pi. 100; Jenyns' Brit. Vert., p. 352; Yarr. Brit. Fish., 

 L p. 104. Umbra Rondeletii, Willugh. 



