166 
Emarginula elongata. 
capuliformis. 
Fissurella greca. 
Bullea aperta. ? 
REPORT—1843. 
Siliquaria anguina. 
Scissurella plicata. 
Solarium stramineum. 
Trochus coutourii. 
Bulla cornea.* fanulum. 
utriculus. ? exiguus.* 
Coriocella perspicua. millegranus.* 
Natica millepunctata. Turbo sanguineus. 
valenciensii. rugosus.* 
pulchella. Phasianella pulla. 
Eulima distorta. Cerithium lima.* 
subulata. angustum. 
unifasciata. Triforis adversum. 
Parthenia elegantissima. ? perversum.* 
Rissoa ventricosa. ? 
Pleurotoma formicaria.* 
cimicoides. crispata.* 
reticulata.* reticulata var.spinosa. 
ovatella. maravigne.* 
Turritella 3-plicata.* vauquelini. 
terebra.* 
SeventH REGIon. 
The depths between 80 and 105 fathoms (an extent of 25), yield a cha- 
racteristic fauna of their own. The sea-bottom is usually nullipore, more 
rarely sand or mud. Herbaceous uct have disappeared. Echinodermata are 
here not uncommon; Zoophyta and Amorphozoa scarce. Among the former 
are species of Hornera, Lepralia and Cellepora; among the latter a small 
round species of Grantia is frequent. Echinus monilis, Cidaris histrix and 
Echinocyamus, with some of the Ophiuride, are frequent alive : no Asteriade 
occur. Mollusca tunicata have ceased ; as also Nudibranchea. Crustacea 
are not unfrequent, as well as testaceous annelides, among which the glassy 
Serpula is very characteristic of this region. 
The Testacea most generally distributed are Lima elongata, Cardita acu- 
leata, Rissoa reticulata, and Fusus muricatus. 
Those most prolific are Fissoa reticulata, Turbo sanguineus, Venus ovata, 
Nucula striata, Pecten similis, and the various species of Brachiopoda, which 
tribe abounds in this region. 
Testacea or Recion VII. 
Lamellibranchiata. 
Ligula profundissima. 
Corbula nucleus. 
Poromya anatinoides. 
Nezra cuspidata. 
costellata.* 
abbreviata. 
Pandora obtusa. 
Saxicava arctica.* 
Lucina commutata. 
bipartita. 
Astarte incrassata. 
pusilla. 
Cytherea apicalis. 

Venus ovata.* 
Cardium minimum.* 
Cardita squamosa.* 
Arca lactea.* 
scabra. 
imbricata. 
tetragona. 
Nucula polii. 
margaritacea. 
striata.* 
Modiola barbata.* 
Lima elongata. 
crassa. 
