PLATE §? 
PLATE XLV. 
GASTEROSTEUS SPINACHIA. 
FIFTEEN SPINED STICKLEBACK.^ 
* PISCES TIIORACICI. 
GENERIC CHARACTER. 
Head oblong, smooth ; jaws armed with small teeth : tongue short, 
and obtuse; palate smooth : eyes moderate, very little prominent and 
lateral. Branchiostegous membrane with tliree, six, and sometimes 
seven rays: operculum of two pieces, rounded and stiiated. Body 
carinated on each side and covered with bony plates : distinct spines 
before the dorsal fin : lateral line straight : ventral behind the pector;d 
fins, but above the sternum. 
SPECIFIC CHARACTER 
AND 
SYNONYSIS. 
Dorsal spines fifteen. 
Gasterosteus Spinachia : spinis dorsalibus q^ulnq^uedecim. Linn, 
Fn. Suec. 338 . Gmel. Sysf. Nat. 1327 . 
sf. 10. 
Gasterosteus pentagonus. Muf. Ad. Fr, p. 34. Llein. miss, 
pise, 4. p, 48. n. 1. 
