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EXPLORATION OF THE GULF OF MAINE. 149 
Thecophora ibla Thompson, dredged by him near the Shetland 
Islands in from three hundred and forty-four to five hundred and 
fifty fathoms, and remarkably beautiful spherical forms three or a 
four inches in diameter, these latter appearing in the trawl with 
Tealia and Cerianthus borealis of Verrill, a large sea anemone. 
The excitement was shared in by the crew, some of whom volun- 
tarily aidtd in thé tedious work of separating them from the 
Strands of the tangle.* 
- On our way back to Gisant we again dredged on each side 
of Jeffrey’s Ledge at depths of one hundred and twelve and 
one hundred and eighteen fathoms; at the former station east: 
of the bank dredging the rare hag fish, Myxine limosa of Girard 
(identified by Mr. F. W. Putnam), in soft mud with a bottom 
temperature in both stations of 39°. On the west side of the 
Ledge in one hundred and eighteen fathoms occurred Schizaster 
Sragilis. 
On the 23d dredgings were made in Salem Harbor and off Mar- 
blehead. Two days, the 25th and 26th, were devoted to investi- 
gating the summit of Jeffrey’s Ledge at a distance of nine to ten 
miles east of Cape Ann. 
* At station 21, beginning with a depth 2 EI shee fathoms rocky bot 
ing off into ninety fathoms gravelly bottom, with sand and some eS aor ee the pera 
f interest occurred :—. Pyonopinate pelagicum. Crustacea, H} raneus, H. 
coarctatus, Lithodes maia, sega oir annu Caridion ieg Hippolyte gi 
H. pusiola, Thysanopoda s Tritropii erari Ahere Sse ë cataphractu 
chella, derus lynceus, : t mons 
Hy Euph b li: Nereis pe agica, UCA 
Eun sect A +h py BS oe: igripes, 
Wilsa ke es aa Cistenides granulatus, Te rebrellides Stroemi ii, i, Tha cincin- 
-natus, Amphitri rrata, Myzicola Steenstrupi, Sabella zonalis, Potam aculifera, 
Protula media, o arbire Pec pa Vermilia serrula, Spirorbis lucidus, S. E aaae ngu- 
laris, Phascolo ma borea atis P. cementarium, Nemertes afinis, Admete viridula. — 
sks, Astyri: 
~ 
ostoma ‘occidentale, Diadora serene Polycera Sp., Scaphander punctostriata, Pntatis 
i Macoma sa (Fig. idia obesa, 
mmon shells. rd the Tunicates Ascidiopsis complanatus, 
hia carnea, Baa n. Sp- i i A. pallidum ar inum albi 
SPor era. i, ea pruinosa, Tubulipora crates, 
id. burnga, Flustra solida; Discopora Skenei, Cellepora ram- 
ulosa, C. scabra, Myriozoum subgracile and others. Among Echinoderms, Lophothuria 
Fabricii, Sci Schizaster fragilis, fragilis, Asterias vulgaris, Leptasterias tenera, L. compta, Stephan- 
guinolenta, Hippasteria erisa Archas- 
zs ta * POR Y 
ter arcticus, A.`Parelii, Pt ; 
and other common Ophiurans, Antedon Sarsii ; and among other sponges Thecophora. ao 
ibla, sp., Tet ethya hispida, Isodictya sp. and Hyalonema longissimum. — i ee 
tFrom stations 27, 28 and 29, from si: 
Thatcher’s Island light, í 
