UAMMARID j:. 1 99 



4. Aiuatliia carino-spiuosa. (PLATEXXXV.fig.il.) E.M. 



Cancer caiino-spinosa, Turton, Linn. Si/st, Nat. iii. p. 7(J0 {Turtons 

 edition ). 



IMiiti; Cat. Crmt. li. M. 1847 ; Cat. Brit. Crmt. B. M. 1850. 

 Dexaniine carino-spinosa, Jfliite, Hint. Brit. Crust, p. 178. 

 Aniphitlioi' carino-spiiiosa, G'ossc, Mar. Zoo/, i. p. 141. 

 Auipliithoe Moggridgei, Spc nee Bate, Ann. Nat. Hist. 2.ser. vii. p. 318. 

 pi. 10. f. 10, 1851. 



Gosse, Mar. Zoot. i. p. 141. 

 Gammarus angidosus, liathke, Nov. Act. Acad. Leopold, x.x. p. 72. 

 t. 8. f. 3. 



Liljehorg, Ofvers.af Konr/l. Vet. Akad. Forhandl. 1854, p. 447. 

 Bruzelins, Skand. Amph. Gamm. p. 50. 



Fret/ u. Leuckart, Beitr. z. Kenntn. Wirbellos. Tliiere, p. 162 (in 

 Bntzelius). 



llostnim small. Carina upon the ccphalon and anterior segments 

 of the pleon scarcely defined : a tubercular ridge also exists on 

 each side, commencing at the fifth segment of the pereion, and 

 terminating in the foui'th segment of the pleon, where it becomes 

 confluent with the dorsal carina. 



Length about \ of an inch. 



Hab. Eastern shores of Scandinavia ; Menai Straits {Mr. Joshua 

 Alder) ; Langland Bay, Glamorgan (C S. B.) ; Tenby and Falmouth 

 (Mr. Webster); J^oli^cvro (Mr. Loughrin) ; Isle of Wight {Old Col- 

 lection in B.M.). 



Rathke (/. c. p. 74) states that it closely resembles Oammaracan- 

 thtis I orient us of Sabine and G. pi^iguis of Kroyer, and that it is 

 distinct from A. Sabinii and A. carinata. 



Upon comparing the specimens which I originally called AmphitJioe 

 Moggridc/ei with Rathke's figiu-e and description of Gain, angulosus, I 

 have no doubt of their identity ; and the diHerence between them 

 and A. Sabinii appears to be a variation dependent upon altered 

 conditions. In recording them as separate species, I do so more 

 in deference to the opinions of Rathke, Liljeborg, and Rruzehus, 

 than from a conviction of there being any real distinction between 

 them. 



The central habitat of A. Sabinii is the coast of Greenland, 

 whence the original and largest specimens have been brought. Those 

 which I have received from Banff, through the kindness of that in- 

 defatigable naturalist, my valued correspondent Mr. Edward, are 

 nearly a.s large ; but the specimens that have been sent to me from 

 localities further south are smaller. A single specimen lent to me by 

 Mr. Alder for examination, dredged in the Menai Straits, is scarcely 

 half the size of the specimens taken in Scotland. Those which I 

 found on the shores of South Wales are still smaller, as arc also those 

 sent to me from the southern coast of Cornwall, where the species 

 appears to be likewise diminishing in numbers ; and in the neigh- 

 bourhood of Plymouth 1 have looked for specimens, but have not suc- 

 ceeded in finding any. If the opinion that A. Sabinii and A. carino- 



