1879.] 'lightning' AND 'PORCUPINE* EXPEDITIONS. 585 



excellently represents this species ; and so does Payraudeau's figure 

 (pi. ii. f. 1) of P. violacescens. 



A. Inside edge plain or smooth. 

 trl. Limopsis aurita, Brocchi. 



Area aurita, Brc. Conch, foss. subapp. ii. p. 485, t. xi. f. 9. 



L. aurita, B. C. ii. p. 161, pi. iv. f . 3 ; v. p. 1/4, pi. xxx. f. 1. 



* Lightning' Exp. : St. 2, 5, 7. 



' Porcupine ' Exp. 1869 : St. 3, 13, 14, 23a, 25, 45, 65. 1870 : 

 Atl. 1, 2, 3, 3a, 6, 8, 9, Vigo B., 13, 24, C. Sagres, 26-30, 36, 

 Tangier B. ; Med. Adventure Bank. 



Distribution. Shetland, off W. coast of Ireland, ' Josephine' Exp. 

 (Josephine Bank, off Gibraltar), Palermo, ' Valorous ' Exp., Welling- 

 ton Channel, 'Challenger' Exp. (off the Azores, Bermuda, and 

 Colabra I.), Japan ; 21-1100 fms. 



Fossil-. Miocene and Pliocene. Denmark, Coralline and Red 

 Crag, Holland, Antwerp, N.W. Germany, S. France, throughout 

 Italy, and near Melbourne. 



L. obliqua and L. cumingii of A. Adams. Some of his other 

 species require further examination. The shell of L. aurita becomes 

 oblique in the course of growth. In a fossil state it is the L. (Tri- 

 gonocoelia) laevigata of Nyst. 



B. Inside edge crenated. 



2. Limopsis cristata, Jeffreys. (Plate XLVI. fig. 8.) 



L. cristata, Jeffr. in Ann. & Mag. N. H. Nov. 1876, p. 434. 



' Lightning ' Exp. St. 5. 



' Porcupine ' Exp. 1869 : St. 2, 23, 23a, 36, 40, 47. 1870 : Atl. 

 2, 9, 17, off C. Espichel, 22, 24. 



Bistribution. ' Valorous ' Exp. ; 690 fms. 



A young specimen of L. minuta is figured (PI. XLVI. f. 9) for 

 comparison with L. cristata. 



l/2>. Limopsis minuta, Philippi. (Plate XLVI. fig. 9.) 



Pectunculus minutus, Ph. En. Moll. Sic. i. p. 63, t. v. f. 3, 3a, b ; 

 ii. p. 45. 



L. borealis, B. C. ii. p. 164 ; v. p. 174, pi. c. f. 3. 



'Porcupine' Exp. 1869 : St. 2, 3, 15, 23, 23a, 36, 45, 65. 1870: 

 Atl. 1, 2, 3, 3a, 6, 9, Vigo B., 13, 17a, 24-34. Var. angusta, St. 

 25. Smaller, narrower, thinner, and more oblique, slantingly trun- 

 cated or contracted at the upper part of the posterior side, hin°-e- 

 line shorter, and having a pinkish-brown stain at the beaks and insTde 

 near the back. Some specimens of the typical form are finely and 

 closely reticulated ; and in others the concentric ridges are crenated. 

 See Ann. and Mag. (supra cit.) for further particulars as to this 

 species. 



Distribution. Throughout the North Atlantic in deep water from 

 Finmark to Sicily, C. Good Hope, ' Josephine ' Exp. (Azores), Nor- 



