﻿Vol. 66.~] SPECIES OF AMMONITES AND BRACELJOPODA. 103 



Zeilleria lingulata, sp. nov. (PI. XII, figs. 3 & 4.) 



Description. — A subdiamond - shaped, somewhat flattened 

 Dallinine, with the pointed anterior margin slightly projected 

 dorsally like a little tongue. Both valves somewhat gibbous, the 

 ventral more so than the dorsal. Growth-halts conspicuous at 

 intervals. Beak-areas pronounced, flattened, broad ; beak-ridges 

 well defined. Foramen rather large, incomplete. 



Distinction. — This shell is something like Waldheimia emar- 

 ginata, Szajnocha l ; but that does not resemble Sowerby's species. 

 Prof. Szajnocha's shell has the same little ' turn up in front ' (as it 

 is generally called) as the species now described, whence the name 

 lingulata ; but that is not a character of Sowerby's shell. 



Macandrewia discidus, Waagen, 2 is a rounder shell, with a less 

 acuminate beak, a straight side-margin, and showing no sign of 

 the anterior Ungulate character. 



Locality, etc. — ]N~ot uncommon in the top beds of the In- 

 ferior Oolite at Grange Quarry (Broad Windsor, Dorset). Scarce 

 in the ' Top Beds' of Bradford Abbas (Dorset) ; and I have a note 

 of a specimen similar to this species being found in the Coralline 

 (Upper Coral) Bed (truellii zone) of Dundry, Somerset. The date 

 of the species may be stated approximately as schlcenbachi-truettii 

 henierae. It may confidently be looked for in the Top Beds of 

 Burton Bradstock. 



jN"ote. — The growth-halts which impart to the shell a banded 

 appearance, are very noticeable in some specimens, and seem to con- 

 stitute a distinctive feature in combination with its other characters. 

 They remind one of the growth-halts of the recent Bouchardia. 



Bhynchonella pentapttcta, sp. nov. (PI. XII, figs. 19 & 20.) 



Description. — A small, subglobular, tripartite costate Rhyncho- 

 nellid, ornamented normally with about eleven well-marked ribs, of 

 which three are on each lateral area and five are on the median area. 

 The median fold of the dorsal valve projects above the lateral 

 areas, anteriorly, so that the line of valve-junction uniting lateral 

 and median areas is about twice as long on each side of the median 

 area as it is between any rib and furrow. The sinus on the 

 ventral valve is much sunken : lengthwise it forms a regular 

 gibbous curve. The ribs are prominent, with deep furrows, and so 

 the line of junction is strongly indented. The beak is small 

 and short, the foramen small, hypothyrid, and touching the dorsal 

 umbo : it is bounded laterally by small deltidial plates. 



Distinction. — The deeply sinuated line of valve-junction is 

 the most characteristic feature. There is nothing figured by 

 Davidson like this shell : Kh. moorei 3 has quite different proportions, 



1 ; Die Brachiopoden-Fauna der Oolithe von Balm ' Denksclir. k. Akad. 

 Wissenseh. Wien, vol. xli, pt. ii (1879) p. 214 & pi. iv, fig. 18 only. 



- ' Zone cles Am. Sowerbyi ' Geogn.-Pal. Beitriige, vol. i, pt. 3 (18G7) p. 638 

 & pi. xxxi, fig. 8 ; fig. 9 is more elliptical. 



3 ' Monogr. Brit. Jur. Brack' (Falseont. Soc.) 1876, pi. xv, fig. 11. 



