ATLANT. DEEP-SEA EXPED. 1910 VOL. Ill] 



BRACHIOPODA, LAMELLIBR. ETC. 



Dentalium capillosum, Jeffreys. 



Dentalium capillosum, Jeffreys, Ann. Mag. Nat. Hist. nr. 4, vol. 

 19, 1877, p. 153. 



23 / 6 , st. 41, lat. 28° 8' N., long. 13° 35' W., 1365 

 m., yellow mud. Two specimens, 61 and 44.5 mm. long 

 respectively. 



D. capillosum was discovered by the "Valorous" in 

 Davis Strait in 1263—3267 m. In 1869 the "Porcupine" 

 obtained it off the Hebrides in 992 m. and off the mouth 

 of the Channel in 1577 m., and in 1870 off Portugal 

 in depths between 403 and 2004 m.; the "Challenger" 

 took it near Portugal in 860 m., at the Azores in 1830 

 m., and at Culebra Island in 714 m. The "Talisman" 

 obtained it in the Bay of Biscay in 1190 — 2651 m., the 

 Prince of Monaco near the Azores, and Pourtales at 

 Bahia Honda in the Mexican Gulf, in 765 m. 



Dentalium caudani, Locard. 



Dentalium caudani, Locard, Res. Sci. Camp. "Caudan", Fasc. 1, 

 1896, p. 171, pi. 6, fig. 2. 

 6 — 7 / 8 , st. 101, lat. 57° 41' N., long. 11° 48' W., 

 1853 m., hard clay. Several specimens, the two largest 

 of which measure: 



Nr. 1 Nr. 2 



Length 104 mm. 103.5 mm. 



Breadth at base 10 „ 10.5 „ 



„ tip 1.2 „ 1.5 „ 



Length of the fissure 1 „ 2 „ 



Locard gives the length as 105 mm. 



Our specimens must be referred to the variety minor, 

 Locard 1 ) as only the upper third of the shell is endowed 

 with longitudinal ridges, the rest being smooth. Still it 

 must be noted that this variety according to Locard 

 only attains a size of 68 mm. 



D. caudani was taken by the "Caudan" in the Bay 

 of Biscay in 1300 m. The Prince of Monaco found it 

 off Portugal in 1500 m., and off the west coast of North 

 Africa in 1550—2330 m. The "Michael Sars" by finding 

 it off the west coast of Scotland showed that D. caudani 

 is distributed all over the great depths of the eastern 

 North Atlantic from off Senegal to the Faroe — Shetland 

 Channel. 



Dentalium entale, Linne 



Dentalium entalis, Linne, Syst, Nat. ed. 10, 1758, p. 785. 



27 / 7 , st. 95, lat. 50° 22' N., long. 11° 44' W., 1797 

 m. One shell, empty and somewhat decomposed. 



Dentalium occidentale, Stimpson. 

 Dentalium occidentale, Stimpson, Shells of New England, 1851, p. 28. 



*) Op. cit. p. 104, pi. 6, fig. 7. 



6 / 3 , st. 21, lat. 35° 31' N., long. 6° 35' W., 535 m., 

 yellow sand, temp. 11°52 C. Eight specimens, the largest 

 measuring 36 mm. in length. 



Dentalium agile, M. Sars. 



Dentalium agile, M. Sars, Christiania Vid. Selsk. Forh. 1868, p. 257. 



Q. O. Sars, Remarkable Forms of Animal Life on 



the Norw. Coast, part 1, 1872, p. 31, pi. 3, fig. 4—15. 



6 / 5 , st. 24, lat. 35° 34' N., long. 7° 35' W.. 1615 



m., yellow mud, temp. 8° C. One specimen, length 



63 mm. 



GASTROPODA. 



Calliostoma suturale, Philippi. 



Trochus suturalis, Philippi, Enum. Moll. Sicilis, vol. 1836, p. 185, 

 pi. 10, fig. 23. 



5 / 5 , st. 21, lat. 35° 31' N., long. 6° 35' W., 535 m., 

 yellow mud, temp. il°52 C. Several specimens, the 

 largest of which measures: height 11 mm., largest dia- 

 meter 11.5 mm. 



C. suturale, which is known from the pliocene strata 

 of Sicily, was taken living for the first time in 1869 by 

 the "Porcupine" of the mouth of the Channel in 1327 

 m. (st. 36). Later on it was taken at a number of points 

 between the Channel and North Africa, including the 

 Mediterranean, in depths between 46 and 2330 metres, 

 by the "Porcupine", the "Hirondelle", the "Travailleur" 

 and the "Talisman". 



lanthina communis, de Lamarck. 



Ianthina communis, de Lamarck, Anim. sans Vert. t. 6, part 2, 

 1822, p. 206. 

 Vs, st. 25 A, lat. 35° 36' N., long. 8° 16' W., surface. 

 Nine specimens, attached to Velella spiralis, Forskal. 



Pilidium radiatum, M. Sars. 



Capulus radiatus, M. Sars, Nyt Mag. f. Naturvidsk. vol. 6, 1850, 

 p. 184. 



3 %, st. 70, lat. 42° 59' N„ long. 51° 25' W„ 1100 

 m., temp. 3°7 C. One living specimen. Length 15.5 

 mm., breadth 13 mm., height 5.5 mm. The specimen 

 is not so high, and has a thinner shell than specimens 

 from Northern Norway and from the Arctic regions I 

 have had the opportunity of examining. Furthermore it 

 differs from the typical P. radiatum in the total absence of 

 the yellowish or reddish-brown radial bands on the shell. 



Living specimens of P. radiatum have hitherto not 

 been taken from greater depths than 836 m. (The "Voe- 

 ringen", st. 164), though an empty shell is reported from 

 a depth of 1187 m. (idem, st. 192). 



