] . OASTEKOSTEUS. -i 



Gasterosteus aculeatus, Litut. St/st. p. 489; Ch-oiioi: Syst. ed. Gray, 

 p. 167 ; Block, t. 53. f. 3 ; Bl. Schn. p. 122 ; Donor. Brit. Fishes,' \. 

 pi. 11 ; Turton, Brit. Faun. p. 101 ; Flem. Brit. An. p. 219 ; Fries 

 och Ekstr. Skand. Fisk. p. 17. t. 4. f. 1 ; Thotnpson, Ann. S,- Mag. 

 Nat. Hist. 1841, \'ii. p. 95 ; White, Catal. Brit. Fishes, p. 35. 



Centriscus, sp., Klein, Pise. Miss. iv. p. 48. t. 13. f. 4, 5. 



Gasterosteus ter-aculeatiis, Lacep. iii. p. 296. 



D. 1 1 1 1 ^^. A. ^. P. 10. V. 1/1. CiBc. pylor. 2. Vert. 15/16. 



Sides of the body mth a more or less complete series of scaly 

 plates. The two anterior dorsal spines one-third of the height of 

 the body. 



Var. A. Gasteeosteus gtmnuetjs. 



Gasterosteus grmnurus, Cm: Rigne Anim. 



leiunis, Cur. S>- Val. iv. p. 481. pi. 98. f. 4 ; Yarr. Ann. Sf Mag. 



Nat. Hist. iii. p. 522, and Brit. Fishes, i. p. 95; Owen, Catal. p. 56; 



Coste, Memoires Sci. Sav. Fkrang. x, 1848; Giinther, Neckarjische, 



p. 29. 

 Quarter-armed Stickleback, Parn. Ichth. Frith of Forth, p. 30. t. 26. 



Four or five scaly plates above the pectoral fin ; the remainder of 

 the body naked. 



Middle and Southern parts of Europe ; England, France, South 

 GeiTuany, Baltic. 



a. Adult. New River. Museum Leach. 



b-e. Adult. Greenwich. Presented by W. Yarrcll, Esq. 



f, g. Adult. Poole Heath. Dorset. Presented by W. Thompson, Esq. 



h-h. Adult. Wandsworth. Museum Leach. 



I, m. Adult. Lochend. 



n. Adult. Duddington Loch. 



o-r. Adult. England. 



s. Adult: not good state. Baltic. From the Haslar Collection, 



t. Adult. From the Haslar Collection. 



u. Half-grown : bad state. 



v-y. Half-grown. Presented by Dr. Johnston, 



z. Half-grown. Museum Leach. 



a. Adult. 



/3. Adult: skeleton. 



Var. B. Gasterosteus semi arm atus. 



Gasterosteus semiamiatus, Cuv. ^ Val. iv. 493; Yarr. be. f, 127 6, 

 and Brit. Fishes, i. p. 94 ; Parn. I. c. p. 82. t. 22. 



The front part of the side with a series of ten to fifteen scaly 

 plates. 



France ; Belgium ; England. 



a-d. Adult. Greenwich. Presented by W. YarreU, Esq. 

 e,f. Adult. Tweed. Presented by Dr. .Johnston. 



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