490 Transactions of the Society. 



specimen procured from ' Challenger ' Station 185, Raine Island, Torres- 

 Strait, 155 fathoms. 



The shell, when perfect, has an elongated neck, with a rim at the 

 oral end. The neck is quite smooth, and where it joins on to the 

 body there is usually a conical mass of opaque shelly matter; these- 

 features are not shown in the hitherto published drawings of the 

 variety. In some examples the punctation of the ribs is obscure, but 

 none of them have been observed in which it is entirely wanting, as in 

 the specimen described by Dr. Chaster. 



In the Malay Archipelago and the ' Challenger ' specimens the 

 direction of the spiral is invariably that of a rii:ht-handed screw, 

 directly opposite to that of the spiral variety of L. striata ; but in the- 

 figures given by Ponton and Dr. Chaster the spiral is left-handed. 



In the Malay Archipelago the species is very abundant, and its 

 distribution is precisely the same as that of L. striatopunctata. In 

 addition to ' Challenger' Station 185, I have a specimen from Station. 

 172, off Nukualofa, Tongatabu, Friendly Islands, depth 18 fathoms. 

 Dr. Chaster's examples are from mud under Southport Pier. 



Lagena phimigera Brady, plate VIII. fig. 8. 



Lagena plumigera Brady, J 881, Quart Journ. Micr. Sci., n.s^ 

 vol. xxi. p. b'2. L. plumigera Brady, 1884, Chall. Rept., p. 465,. 

 pi. lviii. figs. 25, 27. L. plumigera (Brady) Egger, 1893, Abhandl. 

 k. bayer. Akad. Wiss., CI. II. vol. xviii. p. 329, pi. x. figs. 37, 38. 



This is essentially a deep-water species, and according to Brady 

 has been obtained from the tropical regions of the South Pacific at 

 depths of 2350 and 2425 fathoms, and from near the Cape de Verde 

 islands at a depth of 1070 fathoms. Dr. Egger records it from New 

 Guinea 455 fathoms, and from West Australia 645 fathoms. 



In the Malay Archipelago it is extremely rare, and has been found 

 only at Station 30, in Area 2. 



This species seems to have its isomorph in the compressed 

 L. lagenoides, from which it differs only in having the transverse 

 section circular and in possessing a greater number of ribs. 



C4roup of Lagena clavata. 



Lagena clavata d'Orbigny sp. 



Oolina, clavata d'Orbigny, 1846, For. Foss. Vienne, p. 24, pi. i. 

 fig. 2. Lagena Isevis var. amphora Williamson, 1818, Ann. and Mag.. 

 Nat. Hist., ser. 2, vol. i. p. 12, pi. i. figs. 3, 4. L. Isevis (Mont.) 

 Haeusler, 1887, Neues Jahrb. fiir Min., p. 181, pi. iv. figs. 39-48. 

 L. clavata (d'Orb.) Brady, 1888, Geol. Mag., dec. 3, vol. "v. p. 482,. 

 pi. xiii. figs. 4, 5. L. Isevis (Mont.) Haeusler, 1890, Abhandl. 

 schweiz. Pal. Gesell., vol. xvii. p. 86, pi. xiiLfigs. 17, 18. L (Oolina\ 

 clavata (d'Orb.) Egger, 1893, Abhandl. k. bayer, Akad. Wiss.. CI. II. 



