REVISION OF PODOPHTHALMATA AND CUMACEA. 97 
Corystes cassivelaunus, Herbst (Rep. I, 225.) 
Not uncommon on sandy ground at various depths 
and between tidemarks throughout the district. 
Thia polita, Leach. (Rep. I, 224). 
Constable Bank, ‘‘ Hyena,’ 1885, 10 to 17 miles 
N.W. of Mersey Bar; .‘‘ Spindrift,” 1890. 
Atelecyclus septemdentatus, Mont. = A. heteroden, Leach. 
Off Fleswick Bay, Station I, 20 fath., 2 specimens, and 
Station ITT, 30 to 33 fath. 1 specimen, June 5, ’92. 
Platyonychus latupes, Penn., Portumnus variegatus, Leach. 
(Rep. I. 225. IT, 180). 
Between tidemarks on sand in which it buries itself. 
Penmaenmawr. Colwyn Bay. 
Carcinus menas, Baster (Rep. I, 225). 
Very abundant in the Dee and Mersey. Not so 
common at Colwyn Bay. 
Portunus puber, Linn. (Rep. I, 225, IIT, 69). 
Point of Ayr, 1875. Bull Bay, Anglesey. 
Portunus depurator, Linn. (Rep. I, 225). 
Abundant everywhere: generally on stony ground 
3 to 7 fath. 
Portunus arcuatus, Leach. (Rep. I, 225). 
Mouth of the Dee. Colwyn Bay. Not common. 
Portunus holsatus, Fabr. (Rep. I, 180). 
Garth Ferry, Menai Straits—10 fath. (H.C. Chadwick) 
Portunus pusillus, Leach. (Rep I, 225, IV, 248). 
Port Erin, I. of Man; Dulas Bay, Anglesey. 
Piltumnus hirtellus, Penn. (Rep. I, 225, IT, 180). 
Orme’s Heads; Puffin Island; Bar of Dee. Shore 
to 15 fathoms. 
Xantho rivulosus, Risso, and var. twberculatus, Couch (Rep. 
II, 180, III, 69, IV, 244). 
Beaumaris, shore (Chadwick). Port Erin. 16 miles 
N. of Holyhead 40 to 60 fath. ‘‘ Spindrift,”’ 20/7/89. 
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