146 REPORT—1843,. 










: Found 3 | Ge hi 
Species. | Range. vane at Ground. = wee 
Lima, Brug. fathoms. | fathoms. 
elongata, Jorb....... 55-140 55 nullipore, mud.) f. 
cuneata, Forb.......| 40 0 nullipore. Ts 
crassa, Forb..,....... 70-150 0 nullipore, mud.) f. 
Pecten, Brug. 
jacobeeus, Lam. ...| 12-70 25 nullipore. r. |Lus,, Can. 
dumasii, Payr.......| 70-150 0) nullipore, mud.) 1. 
pes felis, Zam. ......| 60-69 0 nullipore. Tr. 
suleatus, Zam. ...... 7 0 1, 
opercularis, Zim. ...| 10-70 | 31-55 | nullipore, &c. | a, \Lus., Celt., N. 
varius, Lin. ......65| 7-55 25-55 | aullipore, &c. | f. |Lus., Celt., N. 
pusio, Lam. .........| 10-69 40 weed. f. |Lus., Can. 
polymorphus,Bronn.| 8-69 | 28-41 weed, &c. | a. |Eux, 
hyalinus, Phil. ......| 6-60 6-40 sand. a. 
testze, Bivon........0s 29-69 | 30-50 weed. ty 
similis, Laskey ...... 27-185 | 40-70 mud. a. |Celt., North. 
fenestratus, Forb....| 45-140 0 mud, nullipore.| f. 
concentricus, Forb. .| 70-185 0 mud. f. 
hoskynsii, Ford. ...| 185-200 0 mud. 1. 
Spondylus, Lam. 
gaderopus, Lin. .... 3-14 I rock. 1. |Can. 
gussonii, Costa...... 105 105 nullipore. Yr. 
Ostrea, Lin. 
plicatula, Zin. ...... | lit.~30 lit. rock, &¢. 1. 
cochlea, Poli ...... 60-110 0 nullipore. r. |Can. 
Anomia, Brug. 
ephippium, Lin..... 20-40 20 weed, &c. | |, |Lus., Celt., N. 


polymorpha, Phil....| 20-140 | 20-30 weed, &c. ]. |Lus., Celt., N. 

Mollusca Tunicata. 
Of the simple Ascidians seventeen species were met with. Five of them 
were Pelagic species, among which Salpa maxima and S. democratica were 
the most abundant, especially in the spring of the year, when great numbers 
of them approached the surface in fine weather in the afternoon. The 
remainder were fixed species, chiefly belonging to the genera Phallusia, 
Ciona, and Cynthia, some of which were found as deep as fifty-five fathoms ; 
they were most abundant between twenty and forty fathoms, generally on 
weedy ground. A number of compound Ascidians were also met with in 
similar depths of water*. 
RADIATA. 
Arachnodermata. 
There are fifty-seven species of acalephous animals recorded as inhabitants 
of the Mediterranean sea; but few of these occur in the Aegean. Though 
* The working out of the species procured of this difficult tribe and of some of the 
radiate families, especially the smaller Zoophytes, demands more disposable time than 
the reporter’s professional avocations (at present) permit; he is constrained therefore 
reluctantly to give only a general sketch in these departments, hoping at some future 
meeting to present supplementary details. 
