320 Mr. F. Chapman on 
longer axis, with the coil twisted through several planes 
during its growth, so that the test has a Quinqueloculine 
aspect. The tube forming the test is also constricted at 
various points between the two extremities. Texture of shell 
finely arenaceous. Aperture a circular orifice, formed by the 
open end of the tube; the aperture is angulated or margined 
in the specimen taken for figuring. Length 33 inch 
(0°48 millim.). 
This species is related to A. Robertsont in the general 
Quingueloculine plan of growth; but the cross section of the 
test of the latter species would show a considerably greater 
amount of lateral compression and breadth. 
A. fusiformis was found in the Rheetic clay of bed no. 2, 
at Wedmore; common. 
Subfamily Hyporuyerrvz. 
Noposineia, Brady, 1876. 
General characters (after Brady, emended).—Test free, 
straight, arcuate, or crooked, never spiral ; formed either of a 
tube constricted at intervals, or of a single series of segments 
variously combined. ‘Test arenaceous, often smooth exter- 
nally, imperforate, but sometimes having pustulate orifices at 
various points on the surface. Wall of test thick, with a 
labyrinthic structure. Aperture variable, simple or compound. 
16. Nodosinella wedmoriensis, sp. n. 
(Pl. XI. figs. 21-24.) 
(2) Psammosiphon elongatus, Vine, 1882, Quart. Journ. Geol. Soc. 
vol, xxxvill. p. 390. 
Test more or less cylindrical, tapering towards the ends, 
straight, arcuate, or sharply recurved ; sometimes flattened or 
outspread at the distal end. The interior divided at intervals 
by partitions, forming a series of chambers ; no indications of 
internal septation visible on the surface of the test. Texture 
finely arenaceous; the test of a brown colour; the outer 
surface smooth, but with evidences of foreign substances, such 
as the impressions of crystals which were used to build up 
the test. Wall of test thick and labyrinthic in structure. 
Length of longest specimen found } inch (6°25 millim.), 
breadth 35 inch (1°25 millim.). 
A large number of this species were selected from the 
Rhetic washings. They invariably show the septation of 
the tube when cut through longitudinally, and it was owing 
