490 REPORT OF COMMISSIONER OP FISH AND FISHERIES. 



megalophthalma (p. 336) are everywhere common, burrowing in the sand. 

 The Cancer irroratus (p. 338) and Platyonichus ocellatus (p. 338) are rather 

 common at and just below low- water mark. The Hippa talpoida (p. 338, 

 Plate II, fig. 5) is occasionally found, and the young sometimes occur 

 in large numbers, burrowing in the sand at low-water mark. The com- 

 mon shrimp, Crangon vulgaris, (p. 339, Plate III, fig. 10,) is usually abund- 

 ant where there are sheltered sandy flats. 



The Annelids are less numerous than on the sandy shores of the 

 sounds, but such as do occur are mostly of the same species. One of 

 the most interesting is the Nerine agilis, (p. 346,) which is very remark- 

 able for the rapidity with which it burrows in the sand. 



The Mollusks are few in number. One of the most abundant of the 

 Gastropods is the Lunatia heros, (p. 353, Plate XXIII, figs. 133-136,) 

 which burrows just beneath the surface of the sand, at and below low- 

 water mark. The Neverita duplicata (p. 354, Plate XXIII, fig. 130) is 

 also occasionally found, but is much less abundant than in the bays. 



Of Lamellibranchs there are but few species that can maintain them- 

 selves in such situations. Among these the " long clam," Mya arenaria, 

 (p. 463,) the u razor-shell," Ensatella Americana, (p. 356,) and the " surf- 

 clam," Mactra solidissima, (p. 358,) are the most common. 



Very few, if any, Kadiates are to be found on the exposed sandy shores, 

 unless thrown up by the waves from deeper water. In places that are 

 somewhat protected from the violence of the surf, the Leptosynapta Gi- 

 rardii (p. 361, Plate XXXY, figs. 265, 266) is often found burrowing in 

 the sand at low- water mark. Sometimes, in similar places, the " sand- 

 dollar," Uchinarachnius parma, (p. 362, Plate XXXV, fig. 267,) is found 

 in large numbers at extreme low-water mark. 



There are no Hydroids and Polyps that properly inhabit such shores. 



List of species inhabiting the sandy shores of the open coast. 



ARTICULATA. 



Crustacea. 



Page. 



Ocypoda arenaria, (young). . . 337 



Cancer irroratus 490 



Cancer borealis 486 



Platyonichus ocellatus 490 



Hippa talpofda 490 



Eupagums pollicaris 313 



Page. 



Crangon vulgaris 490 



Orchestia agilis 336 



Talorchestia longicornis 489 



T. megalophthalma 489 



Unciola irrorata 340 



Idotea caeca 340 



Annelids. 



Page. 



Nereis virens 317 



N. limbata 318 



Bhynchobolus Ainericanus. . 342 

 Nerine agilis 490 



Page. 



Scolecolepis viridis 345 



Clymenella torquata 343 



Amphitrite ornata 320 



Polycirrus eximius 320 



