188 LIST OF FIGURES. 



FIGURE VOL. II. PAGE 



272. Pomalostegus stellatus, f 57 



273. Hyalopomatus Langerhansi, ^ 57 



XVIII. CHARACTERISTIC DEEP-SEA TYPES. MOLLUSKS. (Figs. 274-337.) 



Cephalopods. 



274. Opisthoteuthis Agassizii, about (Verrill) . . . . .58 



275. Nectoteuthis Pourtalesii, f (Verrill) ...'.... 59 



276. Mastigoteuthis Agassizii, -^ (Verrill) 59 



277. Eledone verrucosa, ^ (Verrill) ........ GO 



278. Alloposus mollis, | (Verrill) 60 



279. Benthoteuthis, f (Verrill) 61 



280. Spirula, if (Huxley) 61 



281. Architeuthis princeps, ^ (Verrill) 62, 63 



Gasteropoda and Lamellibranchs. 



282. Pleurotoma (Ancistrosyrinx) elegans, | (Dall J ) . . . . .66 



283. Pleurotoma subgrundifera, about ^ . . . . . . . .66 



284. Dentalium perlongum, \ 67 



285. Calliostoma aurora, ^ .......... 68 



286. Gaza superba, ij& 68 



287. Leptothyra induta, f 69 



288. Pleurotomaria Adansoniana, J 69 



289. Pleurotomaria Quoyana, \ . . . . . . . . 69 



290. Margiuella Watsoni, f 70 



291. Ringicula leptocheila, f . .70 



292. Cancellaria Smitbii, f 70 



293. Mitra Swainsoni, f . 70 



294. Typhis longicornis, f 70 



295. Triforis longissimus, f .......... 71 



296. Siliquaria modesta, ^ 71 



297. Vermetus erectus, 4 5 - 71 



298. Pecten (Amusium) Dalli, \ 72 



299. Pecten phrygium, \ 72 



300. Cetoconcha bulla, f 72 



301. Cetoconcha bulla, interior of valve, ^ ....... 72 



302. Cetochoncha elongata, \ 72 



303. Tindaria cytherea, 1^ 72 



304. Cardium peramabilis, f 72 



305. Modiola polita, f 73 



306. Cuspidaria microrhina, \ ......... 73 



307. Cuspidaria microrhina, valve seen from the hinge, \ . . .74 



308. Verticordia elegantissima, ^ 74 



309. Verticordia perversa, f .......... 74 



310. Bushia elegans, f 74 



311. Meiocardia Agassizii, l ^ 5 - 74 



312. Vesicomya venusta, l j 5 .......... 75 



Brachiopods. 



313. Terebratula cubensis attached to piece of coral, \ (Davidson) . . 76 



314. Terebratula cubensis, interior of valve, ^| (Davidson) ... 76 



315. Waldheimia floridana, \ . . . . . . . . . .76 



1 Mr. Dall has supervised the drawings of the Gasteropoda and Lamellibranchs. 



