434 DISCOVERY REPORTS 



and also more convex on the dorsal side. The general form and markings of the Falkland 

 Islands specimens vary considerably, ranging from the very strong specimens already 

 referred to at WS 88, to specimens even more depressed than Brady's Patagonian figure. 

 In some instances the specimens are so flat that they might easily be taken, at a glance, 

 for Polystomella macella (F. & M.). In the low elevation of the dorsal side, the specimens 

 generally conform to the Patagonian type, but there are a sufficient number of inter- 

 mediate and high-domed specimens to indicate that the height of the spire is not a 

 feature of specific value. 



Sub-family TINOPORINAE 

 Genus Gypsina, Carter, 1877 



396. Gypsina inhaerens (Schultze). 



Acervulina inhaerens, Schultze, 1854, OP, p. 68, pi. vi, fig. 12. 

 Gypsina inhaerens, Brady, 18S4, PC, p. 718, pi. cii, figs. 1-6. 

 Gypsina inhaerens, Goes, 1894, ASP, p. 91, pi. xv, fig. 787. 



Three stations: 388; WS 84, 88. 



Common on shell fragments and stones, the best at 388 and WS 88. The specimens 

 grow, usually, in a more or less heaped-up, but at the same time depressed cone, and are 

 extremely difficult to separate from the few larger specimens which are suspected of 

 being a primitive form of Polytrema q.v. 



397. Genus Polytrema, Risso, 1826. 



At 388, WS 225 and 246, a few specimens of an organism of suggestive appearance, 

 attached to shell fragments and Polyzoa, conveyed an impression that it might be 

 Polytrema. The fragments were sent to Dr S. H. Hickson, F.R.S., who expressed the 

 opinion that he could determine with sufficient certainty the presence of the "pillar 

 pores" characteristic of that genus to assign them thereto. They will not be referable to 

 the species P. miniaceum, but they may represent a much more primitive and hitherto 

 undescribed species in the genus. The Falkland area is far removed from any hitherto 

 recorded locality for the genus, and the matter must remain in abeyance pending the 

 arrival of more material. 



Family NUMMULINIDAE 



Sub-family POLYSTOMELLINAE 



Genus Nonion, Montfort, 1808 



398. Nonion incrassatum (Fichtel and Moll) (Plate XVI, figs. 5, 6). 



Nautilus incrassatus, Fichtel and Moll, 1798, TM, p. 38, pi. iv, figs. a-c. 



Nonionina incrassata, Terrigi, 1883, CQ, p. 205, pi. iv, fig. 52. 



Nonioiiina incrassata, Giimbel, 1885, GB, i, pt ii, p. 421, composite fig. 266 (24). 



Two stations: 48; WS 215. 



A single specimen at 48 and two very fine specimens at WS 215 appear to be nearer to 



Fichtel ana Moll's figure than to any other with which we are acquainted. They are 



