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 tatulus, (Plate XXYV, 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, Hlysia chlorotica, (Plate X XV, 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 waters. 
ARTICULATA. 
Insects. 
Page. 
Chironomus oceanicus...... 6-2-2. cee eee eee ee ee eee 37 
Crustacea. 
Page. Page. 
Panopeus depressus ....... 479| Melita nitida...........--.. 479 
Be SaVle zc san.s setae nation 479} Microdeutopus minax...... 479 
Callinectes hastatus ....... 479| Amphithoé valida......... 315 
Carcinus granulatus....... 312| A. longimana...........-. 370 
Libinia canaliculata....... 368] A. compta................ 370 
L. Gablas sc3ccoceuk oie eens 368 | Corophium cylindricum.... 370 
Eupagurus longicarpus.... 479] Caprella geometrica....... 382. 
Crangon vulgaris......... 479| Idotea irrorata ........... 479 
Virbius zostericola......-. 479| Erichsonia attenuata.-.... 479 
Palemonetes vulgaris... .. 479| Epelystrilobus............ 370 
Mysis stenolepis...-....... 479| Balanus eburneus......... 381 
M. Americana............- 479| Limulus Polyphemus...... 340 
Gammarus mucronatus.... 479 
Annelids. 
Page. Page. 
Lepidonotus squamatus.... 320; Nicolea simplex..-........ 321 
Podarke obscura.......... 319| Scionopsis palmata........ 321 
Autolytus cornutus........ 39? Polycinus eximius......... 320 
Nereis limbata.-.......... P15) SPIOrelty BP aceon dace den 323. 
Nemerteans and Planarians. 
: Page. Page. 
Polinia glutinosa.......... 324) Planarian, (red sp.)........ 480. 
Cerebratulus,sp.....-..... 324] Planarian, (dark greensp.). 480 
