On Mierozoa, &e. By C. D. Sherbom & F. Chapman. 757 



Fig. 15o. 



chambers, and the whole shell generally symmetrical and depressed, 

 sometimes concave at each umbilicus. Bare ; in the brown clay. 

 Also at Chelsea. 



PlanorbuUna complanata (Reuss) var., plate XVI. fig. 15a-c. 

 Anomalina complanata Reuss, 1851, Haidinger's Nat. Abh., Bd. 

 iv. plate iv. fig. 3. — An example somewhat nearer our form was 

 figured and described by Reuss in his paper on ' Hils und Gault,' * 

 under the name of JRosalina complanata. 



PlanorbuUna rotula (d'Orbigny). Woodcut, fig. 155. Anoma- 

 lina rotula d'Orbigny, 1846, For. 

 Tert. Vienne, p. 172, plate x. figs. 

 10, 1 1. — A much compressed, many- 

 chambered variety ; in our speci- 

 men the septation is indistinct. 

 One specimen ; brown clay. 



PlanorbuUna TJngeriana (d'Or- 

 bigny) var., plate XVI. fig. 16a-e. 

 Rotalina TJngeriana d'Orbigny, 



184b', Foram. Tert. Vienne, p. 157, plate viii. fig. 16. — Our 

 specimen, in spite of its ornamentation of riblets on the spire, agrees 

 generally with d'Orbigny s figure. Bornemann figures in ' Sep- 

 tarien-thon Hermsdorf,' Z. d. geol. Ges., 1855, vii., plate xvi. fig. 5, 

 a form in w r hich the ornamentation appears to be a granulate 

 boss. We have the normal type, but do not figure it. It is not 

 rare in our washings. Brown clay ; also at Chelsea. 



PlanorbuUna Haidingeri (d'Orbigny) var., plate XVI. 

 tig. 11a, b. Rotalina Haidingeri d'Orbigny, 1846, For. Tert. 

 Vienne, p. 154, plate viii. figs. 9-11. — Sowerby, in Wetherell's 

 paper (op. cit.), figures this small Rotaline, and describes it, with 

 others, as RotaUa. We have examined our specimens carefully, and 

 have come to the conclusion that it is a dwarfed and 

 poor form, and may be safely described as a variety of 

 P. Haidingeri.] It is of frequent occurrence in the 

 London Clay, but in our washings we have found it 

 only in the black bed. 



Anomalina, sp. Woodcut, fig. 156. Unfortunately 

 broken and lost after this drawing was made. It is 

 near Truncatulina grosserugosa Giimbel. From the black clay. 



Pulvinulina Parker and Jones [1862]. 



Pulvinulina repancla (Fichtel and Moll), plate XVI. fig. 

 18 a-c. Nautilus repandus Fichtel and Moll, 1803, Test. Micr., 

 p. 35, plate hi. figs. a-cl. Rare ; brown clay ; also at Chelsea. 



* SB. K. Akad. Wis.s. Wicn, xlvi. (1863) p. 86, pi. xi. fig. 3. 

 t See also Geologist, vii. (1864) p. 87, and Catal. Fuss. Foram. Brit. Mus., 

 1882, pp. 21 and DO. 



Fig. 156. 



