10 Catalogue of Irish Crustacea. 



cause of science of two of the most distinguished members of 

 the Belfast Natural History Society, George C. Hyndman and 

 R. Patterson, Esqrs. 



CRUSTA N CEA. 

 ENTOMO'STRACA. 



I. 



^4 N pus Cuv. Scop, cancriformis Lam. ? In stagnant waters. 



— Caligus Milll. Mullen, Samouelle Ent. Comp. p. 79. On 

 the codfish. — C. productus Mull. On the salmon. 



II. 



Daphnia Mull. Pulex Lin., Samouelle Ent. Comp. p. 80. In 

 the pond at Cranmore. — D. longisplna Mull. In the pond 

 at Cranmore. — Cypris Mull, conchacea Lin. Inhabiting 

 ditches and stagnant waters, where I have seen it on the 

 dissolving of the ice after a severe frost. — Cytherea Mull, 

 viridis Mull. Among Puci at Bangor and Macedon point. 



— C. lutea Mull. Among JFuci at Bangor. 



III. 



Cyclops Mull, quadricornis Lin. In the drains at the moss, 

 Cranmore. — C. minutus Miiller. Early in spring, in the 

 drains of Cranmore. — C. longicornis Milll. In the drains 

 at the point fields, Bel fast. — Polyphemus Mull, oculus Mull., 

 Cephaloculus stagnorum. In marshes and drains, very 

 rare. 



IV. 



Branchiopoda Lam. stagnalis Linn. In the pond along with 

 Daphnia Pulex. 



MALACO'STRACA. 



PODOPHTHA'LMA. 



1. BRACHYinRA. 



Corystidce. 

 Corystes Lat. Cassivelaunus Penn. Found on the shore at 

 Cushendall Bay. — Atelecyclus Leach 7-dentatus. Found 

 in the stomach of a codfish, January 17. 1817. 



Portunida?. 

 Carcinus Leach Mae N nas Auct. Common about all our 

 shores. — Portunus Fab. puber Linn. Found in Belfast 

 Lough. — P. depurator Linn. Found on the sands at Dun- 

 fanaghy, county Donegal, July 13. 1815. — P. livid us 

 Leach. With last, on the shore at Dunfanaghy. 



