INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 377 



is frequently found attached to the shells of oysters, and to other solid 

 objects. 



List of species commonly found on the muddy shores of the bays and sounds. 



ARTICULATA. 



Crustacea. 



Page. 



Gelasimus pugnax 367 



Sesarma reticulata 367 



Pinnixa cylindrica 367 



Pinnotheres ostreum 367 



Cancer irroratus 367 



Panopeus depressus 367 



P. Sayi 367 



Callinectes hastatus 367 



Carcinus granulatus 367 



Libinia canaliculata 368 



L. dubia 368 



Eupagurus longicarpus .... 368 



B. pollicaris 368 



Callianassa Stiinpsoni ...... 369 



Gebia affinis 368 



Virbius zostericola 369 



Crangon vulgaris 369 



Palosmonetes vulgaris 369 



Mysis stenolepis 



M. Americaua 



Squilla empusa 



Gammarus niucror atus 



Ainphithoe valida 



A. compta 



A. longimana 



Unciola irrorata 



Corophium cylindricum 



Idotea irrorata 



Erichsonia attenuata 



Epely s trilobus 



E. montosus 



Limnoria lignoruni 



Limulus Polyphemus 



Numerous small Entomos- 

 traca, of n>any genera. 



Page. 

 370 

 370 

 369 

 370 

 370 

 370 

 370 

 370 

 370 

 370 

 370 

 370 

 370 

 370 

 370 



Annelids, ( Chcetopods.) 



Page. 



Nereis virens 371 



N. limbata 371 



Diopatra cuprea : . . . 371 



Lumbriconereis opalina 371 . 



L. tenuis 371 



Maldane elongata 371 



Notomastus luridus 371 



N filiformis 371 



Cistenides Gouldii 



Amphitrite ornata 



Ehynchobolus Americanus. 



E. dibranchiatus 



Cirratulus grandis 



Polycirrus eximius 



Cha?tobranchus sanguineus . 



Page. 

 371 

 320 

 371 

 371 

 371 

 371 

 371 



MOLLUSCA. 



Gastropods. 



Paffe. 



llyanassa obsoleta 371 



Nassa vibex 371 



Eupleura caudata 371 



Urosalpinx cinerea 372 



Astyris lunata 372 



Oepidula convexa 371 



Page. 



Littorina irrorata 372 



Lacuna viucta 372 



Bittium nigrum 372 



Triforis nigrocinctus 372 



Bulla solitaria 371 



