186 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [480} 



may be found, both adhering to the leaves of eel-grass and attached to 

 shells occupied by the smaller hermit-crabs. 



The curious little naked mollusk, Elysiella catulus, (Plate XXV, fig. 

 171,) is often quite common on the leaves of eel-grass in our harbors. 

 It also has the power of floating with the bottom of the foot at the 

 surface of the water. Its small size and bright green color, like that 

 of the growing leaves of the Zostera, cause it to be easily overlooked. 



The related species, Elysia chlorotica, (Plate XXV, fig. 172,) appears* 

 to have similar habits, but is much less common. It s color is alsa 

 green. The pretty Doto coronata (p. 400, Plate XXV, fig. 170) alsa 

 occasionally occurs on the leaves of eel-grass. 



A green Planarian is frequent on the eel-grass, and also a bright red 

 species. 



List of species inhabiting the eel-grass in brackish waters. 



ARTICULATA. 



Insects. 



Chironornus oceanicus. 



Page. 

 379 



Crustacea. 



Page. 



Panopeus depressus 479 



P. Sayi... 479 



Callinectes hastatus 479 



Carcinus granulatus 312 



Libinia canaliciilata 3C8 



L. dubia 368 



Eupagurus longicarpus 479 



Crangon vulgaris 479 



Virbius zostericola 479 



talsemonetes vulgaris 479 



Mysis stenolepis 479 



M.Americana 479 



Gammarus inucronatus.. 479 



Page. 



Melita nitida . 479 



Microdeutopus minax 479 



Amphithoe valida 315 



A. longimana 370 



A. compta 370 



Corophium cylindricum 370 



Caprella geometrica 382 



Idotea irrorata 479 



Erichsonia attenuata 479 



Epelys trilobus 370 



Balanus eburueus 381 



Limulus Polyphemus 340 



Annelids.. 



Page. 



Lepidonotus squainatus 320 



Podarke obscura 319 



Autoly tus cornutus 397 



Nereis limbata .. 318 



Page. 



Nicolea simplex 321 



Scionopsis palinata 321 



Polycinus exioiius 320 



Spirorbis, sp 323 



Nemerteans and Planar ians. 



Page. 



Polinia glutinosa 324 



Cerebratulus, sp 324 



Page. 



Planarian, (red sp.) 480- 



Planarian, (dark green sp.) . 480- 



