on the Coast of New England. 505 
Protozoa, 
Spongie. 
Hyalonema longissimum, C. Reniera, coarse and ee sp. © 0.9.6. 
Ropers 0. J. Reniera, sp. with co 
Dorvillia os ae c. ve crac J 
Tethya hispida Bow 0.4. <gpeege pani & 
presi a ae @. 8. H., sp., dark r ee a ells. 0.3.8 
mamillar J. i ‘O, ‘sp., purplish, Poona 0, a. 
P slmastia ale species. Cd; mpact branchin ee sponge. ©. 
ma, sp I Gap abaed spo 
Biberitos ae ‘bright yellow with ‘raved spicula. . 
large verruez. x Isodictya, sp., wi —— 
Suberites, a smooth, orange, ® 7% 
sive sp. J I. infundibuliformis oe O° &: 
Cliona, sp. J. Grantia ciliata. 8. 
Globular cancellated sponge. a. G. arctica (Sy candra Heckel). . 
Several other sponges occurred which have not been ex- 
ed, 
The two localities in shallow water, near Salem Harbor, 
yielded a number of interesting species, with many of the well- 
known Species characteristic of Massachusetts Bay and the 
adjacent coasts. 
EXPLANATION OF PLATES. 
Plate vi.—Fi igure 1, Vermilia serrula Stimpson; an immature specimen, much en- 
lar 
Figure 2, Praia zonalis — Casco Bay, to 20 Legere anterior 
and posterior portions, enlarged 4 diameters. This species has 22 
setigerc ous segmen et the circular Gade of color on the anterior 
portion are brash te 
Figure 3, Ancistria acuta Verrill, from Casco Bay, 10 to 15 fathoms; 
ters. 
Figure 4, Enipo gracilis eee: setw, enlarged 175 diameters. 
Figure 5, Amphitrite cirrata ; a, side view, enlarged about 2 diameters; 
b, one ‘of ia branchie more enlarged; c, one of the uncini enlarged 
500 
Pee ie —Fieure 1, hating lis Verrill; dorsal nlarged four times. 
gilis Ve: oe view, enlarge 
igure oe lacronemertes gigantea Verrill; , head, dorsal view; 5, head, 
ge view ; natarat Bae 
Figure 3, Zretrastemma. vittata Verrill; a, head, dorsal view; }, head, 
front view: 
4. 
same; spicula of the ictenniaaat uch enlarged. 
Figure er prea carneum Ag.; three of the polyps, much enlarged. 
Figure 4, Edwardsia farinacea AE Te enlarged about three diameters. 
Figure 5, The same; view of the the disk; more 
6, Oligotrochus vitri eus Sars; a, an immature plate; b, a fully 
develo one; enlarged 140 
Figure oe ellum Stroémi es: gee wae or pe 5 diameters. 
hone Thecophora ibla W. Thompson ; 
[Figure 4 of plate v1, figures 2 and 4, plate v ae of plate vat 
were drawn by th author ha pws ok om ere ga Smith ; ‘agare , plate 
vu, by Mr. Sherman; figure 5 of plate v1 was copied from Malmgren; all the 
eves daeetn ie wane 
