622 Transactions of the Society. 



At first sight this might be mistaken for one of the trifacial 

 varieties of Lagena ; but a close examination proves that the re- 

 semblance is superficial, and that the triangular shape of the section 

 results from the diverse form of the two opposite faces. 



This variety is named after Charles Elcock, of Belfast, at the 

 request of Mr. Durrand, and as a token of his esteem. 



It is very rare in the Malay Archipelago, and is found only at a 

 few Stations in Area 2. 



Lagena radiato-marginata Parker and Jones. 



Lagena radiato-marginata Parker and Jones, 18G5, Phil. Trans., 

 vol. civ. p. 355, pi. xviii. tig. 3. Fissurina radiato-marginata (P. 

 and J.) Seguenza, 1880, Atti E. Accad. Lincei, ser. 3, vol. vi. p. 186. 

 L. radiato-marginata (P. and J.) Brady, 1884, Chall. Kept., p. 48 L, 

 pi. lxi. figs. 8, 9. 



This beautiful form is very abundant in the Malay Archipelago, 

 and occurs at several Stations in both Areas. 



The specimens are fine, and are remarkably uniform in size, shape, 

 and ornamentation. 



Found by Parker and Jones on the coral reefs of Australia ; and 

 fossil at Bordeaux. Seguenza reports it from the Miocene of Southern 

 Italy. The ' Challenger ' Stations are Nares Harbour, Admiralty 

 Islands, 37 fathoms ; and Raine Island, Torres Strait, 155 fathoms. 



Lagena Wrightiana Brady. 



Lagena Wrightiana Brady, 1884, Chall. Bept., p. 482, pi. lxi. 

 figs. 6, 7. L. Wrightiana (Brady) Egger, 1893, Abhandl. k. haver. 

 Akad. Wiss., CI. II. vol. xviii. p. 334, pi. x. figs. 42, 43. 



This, although equally widely diffused in the Malay Archipelago, 

 is less abundant than the preceding variety. It is more diversified in 

 its characteristics, the grooves often being curved and sometimes bi- 

 furcated, and they do not always leave a smooth space in the centre of 

 the faces. 



The only ' Challenger ' locality is Nares Harbour, Admiralty 

 Islands, 37 fathoms. The ' Gazelle ' Stations for the very minute 

 examples recorded by Dr. Egger, are Mauritius, 190 fathoms ; and 

 West Australia, 190 fathoms. 



Lagena squamoso-marginata Parker and Jones, plate XIV. fig. 7. 



Lagena squamoso-marginata Parker and Jones, 1865, Phil. 

 Trans., vol. civ. p. 356, pi. xviii. fig. 2. Fissurina squamoso-margi- 

 nata (P. and J.) Seguenza, 1880, Atti B. Accad. Lmcei, ser. 3, vol. vi. 

 p. 136. L. squamoso-marginata (P. and J.) Brady, 1884, Chall. 

 Bept., p. 481, pi. lx. fig. 24. L. squamoso-marginata (P. and J.) 

 Dreyer, 1891, Jenaische Zeitschr. fur Naturwiss., vol. xxvi. p. 396, 

 pi. xxvii. fig. 241. 



