334 
HISTORY OF BRITISH CRUSTACEA. 
and homy ; the body of the thorax swollen in the middle, 
“and twisted on itself like the letter S. 
Gills of the cod : found in Ireland, in Belfast and Dublin 
Bays. 
SUPPLEMENT. 
Dr. J. R. Kinahan^ has lately described a strikingly dis- 
tinct species of Crangon as the 
Crangon Allmanni, Kinahan. Channel-tailed Shrimp. 
— Carapace smooth, excepting a small spine on the median 
line of the gastric region, and one on each branchial ; second 
pair of legs as long as third; sixth segment of abdomen 
deeply channelled above; channel continued as a shallow 
groove on terminal segment ; third joint of anterior pair of 
legs spined ; a minute spine between the insertion of second 
pair of legs in males ; in the female, spine obsolete. Length 
from one inch and a half to three inches. It is of a bluish- 
grey colour, dotted over with brown, red, and gold. 
Eound by Dr. Kinahan in the coralline zone of the Irish 
Proceedings of the Dublin Natural History Society, vol. iv. p. 81. 
