[331] INVERTEBRATE ANIMALS OF VINEYARD SOUND, ETC. 37 
a few species of marine insects that are frequently met with under 
stones, or among the small green alge. Among these a small lead-col- 
ored insect belonging to the family of “spring-tails,” Anurida maritima, is 
the most abundant. With it a spider, Bdella, and several species of mites 
(Trombidium) are often found. Several specimens of a “false scorpion, ” 
Chernes oblongus, were also found by Mr. Smith near low-water mark 
under stones. In the pools and on the rocks, among the green confervee 
and other sea-weeds, the active green larvee of a two-winged fly, Chiron- 
omus oceanicus, is often foundin abundance. This larva we have detected 
in the stomach of the “tom-cod,” mixed with small crustacea. 
List of species inhabiting the rocky shores of the sounds and bays. 
In the following list the species living in these situations are brought 
together systematically, whether mentioned in the preceding pages or 
not. The lists are not to be regarded as complete, but include most 
of the species ordinarily met with. The references are to the pages of 
this report, where remarks upon the species may be found: 
ARTICULATA. 
Insects. 
Page. Page. 
Chironomus oceanicus...... 331 | Bdella marina.... ........ 331 
Anurida maritima.......-.. 331 | Trombidium, several species 331 
Chernes oblongus ......-.--- 331 
Crustacea. 
Page. Page. 
Cancer irroratus .........-. 312 | Moora levis .......-.---.... 315 
Panopeus depressus .....-.. 312 | Melita nitida.............. 314 
Po Says. cave gateninneo sews 312 | Amphithoé maculata....... 315 
P. Harrisii ..... Saabeeee aes 313 | A. valida...........-..--. 315 
Carcinus granulatus....-...- 312 | Caprella, sp........--.--.. 316 
Kupagurus pollicaris ....... 313 | Spheroma quadridentata.. 315 
E. longicarpus .-.....-..-.. 313 | Idotea irrorata ....... .--. 316. 
Homarus Americanus...-... 313 | I. phosphorea..........--. 316 
Orchestia agilis............ 314 | Erichsonia filiformis.-...... 316 
Hyale littoralis...... ...... 315 | Epelys montosus.......... 
Calliopius leviusculus...... 315 | Jera copiosa ............-- 315 
Gammarus ornatus..-...... 314 | Balanus balanoides.......-. 304 
G. annulatus......--------. 314 | Numerous small Entomos- 
G. Marinus.......--.-- ‘1... 314 traca, 
