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. Its color is also 

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

 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 water*. 



ARTICULATA. 



Insects. 



Chironomus oceanicus, 



379 



Crustacea. 



Page. 



Panopeus depressus 479 



P. Sayi 479 



Callinectes hastatus 479 



Carcinus grauulatus 312 



Libinia canaliculata 3C8 



L. dubia 368 



Eupagurus longicarpus 479 



Crangon vulgaris 479 



Virbius zostericola 479 



Palaemonetes vulgaris 479 



Mysis stenolepis 479 



M.Americana 479 



Gaminarus mucronatus.. 479 



Page. 



Melita nitida 479 



Microdeutopus minax 479 



Amphithoe valida 315 



A. longimana...' 370 



A. compta 370 



Oorophium cyliudricum 370 



Caprella geometrica 382 



Idotea irrorata 479 



Erichsonia attenuata 479 



Epelys trilobus 370 



Balanus ebumeus 381 



Limulus 'Polyphemus 340 



Annelids. 



Page. 



Lepidonotus squamatus 320 



Podarke obscura 319 



Autolyfcis cornutus 397 



Nereis limbata 318 



Page. 



Nicolea simplex 

 Scionopsis palmata 

 Polycinus eximius 

 Spirorbis, sp 



Nemerteans and Planarians. 



Page. 



Polinia glutinosa 324 



Cerebratulus, sp 324 



Planarian, (red sp.) 

 Planarian, (dark green sp.) 



320 

 323 



Page. 

 480 

 480 



