she three-spined stickle-back. 
* 3 « 
She Tbree-Spined Stickle. Back *. 
This fpecies is broad, and compreffed laterally: it fel- 
dom exceeds two inches and a half in length ; is of an 
olive green upon the back ; the belly white : In fome 
the throat and belly are red. Before the dorfal fin there 
are three fharp fpines which can be railed or deprefied at 
pleafure ; behind the anus there is one, fometimes two, 
ftill ftronger, which are fixed to a bony plate. The ten- 
fpined ftickle-back is of a Hill ftnaller fize, and a more 
(lender form ; the fides are fmooth, not plated as in the 
preceding fpecies. The filters afiert, that this animal is 
produced fpontaneoufly, and from them fillies of various 
kinds ; The foundation of this extravagant notion, is their 
obferving them in ponds newly dug, where, in the courfe 
of a few years, different fifh have been found. We have 
already affigned our reafons for thefe appearances, with* 
out having recourfe to fueh an ill-founded hypothefisf. 
The Fifteen-Spitted S(ick!e-back \ . 
Schonfeldt firft deferibed this animal, which ia an inha-* 
oitant only of the faa, and ia much larger than any of the 
two 
* Gafterofteus acnleatus, Lin. Syft. Stickje-back, or Sharping, Will, 
f Vide Chap. i. fedt. 4. Of the generation of fifties, 
I Aculeate* marinus major, Will. Gafterofteus Spiaadiia, Lis, Syft, 
