SYKES : MOLLTJSCA OF THE PORCUPINE EXPEDITION. 29 



Three specimens, now in the British Museum, and identified by 

 Jeffreys as his A. ovatus, are referred here ; I have, however, not seen 

 an autlientic specimen of A. Azoricus. Mons. Locard refers A. ovatus 

 to A. Monterosatoi, but, judging from specimens of the latter species 

 identified by the Marquis de Monterosato, they are quite distinct. 



AcTEON ExiLis, Jeffreys. 



ActcBon exilis, Jeff'roys : Ann. i^at. Hist., ser. iv, vol. vi, p. 85 (1870); 

 ser. IV, vol. xix, p. 335 (1877) ; Rep. Brit. Assoc, 1880, 

 p. 387 ; Dautzenberg, Camp. Scient. Albert I"", fasc. i, 

 p. 20, pi. i, fig. 1 ; Jordan, Proc. Malac. 8oc., vol. i, 

 p. 267, pi. xvi, fig. 8. 

 "Porcupine" Expedition, 1869, Stations 28, 42 ; 1870, Stations 3, 



16, 17, 17«, 28, 28rt, 29, 50, 53, 56, Adventure Bank in 92 fathoms. 

 Distribution. — Apparently widely scattered over the Atlantic and 



Mediterranean in deep water; for details see Pilsbry (Man. Conch., 



vol. XV, p. 156) and Locard (Exped. Scient. Trav. Talisman, vol. i, 



pp. 80-82). Fossil in Pliocene of Sicily and Calabria, also Ked Crag 



(J. G. J.). 



In the Report of the " Valorous Expedition," Jeffreys cites 



" Channel slope and Bay of Biscay, 227-994 fath." of the "Porcupine" 



Expedition, but the former depth was at Station 29, off the Spanish 



coast, and the latter at Station 16, off the Purtuguese coast (J. T. 



Marshall). The specimens from Stations 17, 17 a are shorter, broader, 



thinner, and smoother than usual. 



Amongst Jeffreys' notes occurs the following description of the 



animal: "Body whitish, with a faint tinge of brownish-yellow. 



Saout broad, cloven in front and even with the foot in that part. 



Tentacles broad, triangular. Eyes, none perceptible in tliree specimens 



examined. Foot large and fleshy (like that of Stylifer), broad in 



front, and bilobed beliind." 



AcTEON OLOBULINDS (Forbcs). PL III, Fig. 2. 



TornafeUa glolulina., Forbes: Rep. Brit. Assoc, 1843 (1844), p. 191. 

 Actceon globulinus, Forbes: Jeffreys, Hep. Brit. Assoc, 1873, p. 113. 

 Actmon pusillm, Forbes, juv. : Jeffreys, Ann. Nat. Hist., ser. iv, 

 vol. vi, p 85. 



"Porcupine" Expedition, 1870, Adventure Bank in 92 fathoms. 



Distribution. — iEgean Sea, 0-95 fathoms (Forbes) ; Atlantic also 

 (Jeffreys, Rep. Brit. Assoc). Fossil in the Pliocene of Calabria. 



Jeffreys in the reference above cited states that this species 

 " appears to be a younger state of A. pusiUus, having the striae 

 rubbed down, but showing traces of the puncture-like markings " 

 In his manuscripts, however, he has given it specific rank, noting 

 "see Tornatella depressa, Libassi." I do not think that the fragment 

 from the Azores recorded by Dr. Watson (Challenger Report, Gastro- 

 poda, p. 627) really belongs to this species; it is thinner, and hardly 

 shows any trace of a fold on the columella wall, which latter is 

 straigliter. May it be A. Azoricus, Locard ? 



