LITUOLIDA. 27 
4. Tr. squamata (proper), P. and J., has the shell divided throughout into lunate and 
flattened chambers, several in a whorl, and regularly increasing with the progress of 
growth. It much resembles those flatter varieties of Discorbina turbo which are interme- 
diate to D. globularis and D. rosacea, and it may easily be confounded with little, conical, 
scale-like varieties of Valvulina triangularis, but the latter never have more than three 
chambers in a whorl, and are more coarsely sandy. 7). sguamata lives both in the Arctic 
Ocean and the Mediterranean at considerable depths (‘ Quart. Journ. Geol. Soc.,’ vol. xvi, 
p- 305; Carpenter’s ‘ Introd.,’ /. ¢., fig. 1; Parker and Jones, ‘Phil. Trans.,’ vol. clv, 
p. 407, pl. 15, figs. 30, 31. It is well figured by Karrer (see above) from a fossil 
specimen). 
5. Z! squamata inflata, Montagu, sp., rotaliform, consisting of several (20) ventricose 
chambers, increasing rapidly in size, few (5) showing beneath. (See Williamson’s ‘Mono- 
graph Rec. Brit. For.,’ 1857, p. 50, pl. 4, figs. 93, 94; ‘Ann. N. H.,’ 3rd ser., vol. iv, 
p. 347; and Carpenter’s ‘Introd. Foram.,’ p. 141, pl. 11, fig. 5.) Common in the 
brackish estuarine pools on our north-east shore (see Brady, ‘ Nat. His. Trans. 
Northumberland and Durham,’ vol. i, p. 95) ; and found very rarely in deeper water on 
the British Coast; also living on the shores of the Mediterranean, and in the depths 
of the Arctic and South Atlantic Oceans. It also occurs in a sub-fossil condition in the 
clay underlying the peat of the Lincolnshire and Cambridgeshire fens. 
Subgenus—W upsina, D’ Orbigny. 
General characters——Shell adherent, comprising one or more pyriform, oval, or round 
chambers, subarenaceous, smooth, dirty white, or of a deep rusty colour; and, when 
numerous, arranged in a single, irregular, moniliform line, often branched. 
1. WzzBBINa HEMISPHARICA, zov. Plate IV, fig. 5. 
Characters. —Small, circular, subconical, monothalamous, like a low bell-tent, parasitic ; 
recognisable only by its smooth but sandy shell, and general resemblance to the common 
forms of Webbina irregularis. 
Diameter, 2, inch. 
One specimen only of this little parasitical Zrochammina (Webbina) irregularis, var. 
henuspherica, occurs among the Foraminifera from Sutton. 
