EXPLORATION OF THE GULF OF MAINE. ` 147 
was captured on Cashe’s Ledge near Jeffrey’s Bank. With this 
also occurred Nymphon giganteum, Calliostoma occidentale, and 
Ophiocnida hispida. We also dredged in deep brown mud, at. a 
depth of one hundred and seven fathoms, with a temperature of 
thirty-nine and one-half degrees, several Hyalonema longissimum 
of Sars, hitherto only found on the coast of Norway in from one 
hundred and twenty to three hundred fathoms. This had previ- 
ously been found off Casco Bay by Prof. Verrill. Other interest- 
ing sponges occurred, and a rare sand-star, Ophioscolex glacialis, 
new to America,* and which was dredged by Thompson at a 
depth of six hundred and forty fathoms near the Færöe Islands. 
Everywhere on Jeffrey’s Bank and Cashe’s Ledge the mud was 
reddish-brown. At noon of September 4th the sea became too 
rough to dredge, and we ran into a harbor at George’s Island, north 
of Monhegan, for shelter, and on the succeeding day returned to 
Portland for repairs. On September 12th the “ Bache” left Ports 
land for a farther exploration of Jeffrey’s Bank, Capt. Howell in 
command, and on the 13th a series of dredgings were made on 
each side of the southern extremity of it, at depths of sixty,; one 
hundred and five, amd one hundred fathoms (the last point being 
Station 17. Here the arctic sponge, Hyalonema longissimum, 
occurred), with excellent success. The weather appearing threat- 
ening we ran into Portsmouth. | 
On'the 16th we began to dredge on a line extending from Ports- 
mouth to Cashe’s Ledge. Stopping to dredge on either side of 
Jeffrey’s Ledge, we found in a mud hole ninety-five to ninety-eight 
fathoms deep, 14 miles S. E. } E. of Boone [sland Light, with a 
temperature of 374° and 41°t living Schizaster fragilis, a beautiful 
mea sea urchin ; Molpadia odlitica, a sea cucumber ; Macoma sabu- 
_ 
*Here also occurred among the wor . hthys i + N. cili- 
ata, Ninoé nigripes, —— specimens of cel OINTIA EA na, Goniada macul 
bregma inflate , Maldane Sarsii, Prazilta 
gracilis, Trebidijdss Str ee Melinna cristata, Amphicteis Gunneri and Sabella zo- 
nalis. Also the following shells: Siphonodentalium vitreum, Scaphander 
ear gr A fF obs ern 
rare Dacrydium vitreum; and among ter frag nd Ct 
crispatus. 
t Station 12, brown mud, ‘Ga a botaik iemparalané of 6° hace oconrred Dentalium 
, Siphonodentalium vitreum, Periploma papyracea, - 
l ‘eco enn in © Sr etn, iri at, aa 
! ge asemenea 
P se à eh. 
a 
te r thermometer from the Smithsonian Institution and 2 a oe : 
