Vol. 6-2.~] LIASSIC DEXTALIIDJI. -585 



Dextalitjm OBLoxGuar, sp. nov. (PI. XLV, figs. 3 a-d d.) 



T.l. Railway-cutting (G.W.R.), Dixton West, near Grotherington, near Chel- 

 tenham. 

 H. Pliensbachian. 

 77. striati. 

 Colin. L. Richardson. 



Syn. 1875. Dentalium angulation, Tate (non Buckman), Quart. Journ. Geol. Soc. 

 vol. xxxi, p. 508. 

 ? 1877. D. angulation, Beesley, Proc. Warwickshire Nat. & Arch. F. C. p. 16. 



Diagnosis. — Shell small, slightly curved, transverse section of 

 the anterior end usually oblong exteriorly and interiorly, with acute 

 prominent ridges at the junction of the sides with the dorsal margin : 

 transverse section of the posterior end quadrangular exteriorly, 

 with prominent ridges at the angles, between which are concave 

 regions, circular interiorly. The surface-ornamentation consists of 

 numerous, closely-set, fine, transverse linese. Length of holotype = 

 5*5 millimetres. 



Remarks. — This scaphopod was associated in considerable 

 numbers with Dentalium acutum in the clay exposed in the railway- 

 cutting near Gotherington which I have called ' Dixton West.' 

 It also occurs not infrequently in the shelly masses of limestone of 

 striati hemera found at the Battledown Brickworks (Messrs. Webb, 

 Bros.), Cheltenham. Tate obtained it from the same horizon 

 ( ; Yellow Lias *) at ' Hewlett's Hill, Cheltenham,' where the 

 striatum-beds were formerly well exposed. 1 



Dentalium parvuluu (J. Buckman, MS.), sp nov. (PI. XLV, 

 figs. 9«-9c& 12a-12 6.) 



T.l. Leckhampton Station clay-pit, Cheltenham. 

 H. Pliensbachian. 

 r\. Valclani. 

 Colin. L. Richardson. 



1 This clay-pit at the Cemetery-Road Brickworks (called on the 6-inch map 

 Harp Hill') is frequently spoken of as ' Shackel's Pike.' Clay has been 

 worked here for over a century. In Buckman & Strickland's revised edition of 

 Murchison's ; Outline of the Greology of Cheltenham ' (Cheltenham, 1844 ; 

 London, 1845), many fossils are recorded from the 'L[ias] S [hale], Yellow 

 Lias, Hewlett's Road,' and occasionally in the same work this description occurs, 

 with the addition of the words ' foot of Battledown.' When Sir Roderick wrote 

 his little book in 1834 (and ten years later when Buckman and Strickland 

 brought out the above-mentioned revised edition) there was a clay-pit, where 

 the chimney-stack of the Battledown Brickworks now stands, known as 

 ' Coltharn-field.' The upper portion of the Valdani and the lower portion of 

 the striatum-be&s would have been tbe deposit worked there then. Now, 

 however, this particular pit is filled in, and the hill is being worked into, and 

 increasingly-higher beds are being exposed. At the present time (April, 1906) 

 the yellow argillaceous and ferruginous nodules of the striatum-beds constitute 

 the newest deposit seen. On the other hand, at the Cemetery-Road pit they 

 have been working down tbe hillside. The late Prof. J. F. Blake told me that 

 he recollected collecting here from the capricornus-zone, and, as can easily be 

 gathered from the writings of James Buckman, the 'Yellow Lias ' (striati) must 

 also have been admirably exposed. Now the main excavation at the Cemetery- 

 Road pit is in the Valdani-zone, while only occasional tumbled nodules and 

 disinterred fossils, indicative of a deposit of striati hemera, are seen on the very 

 broken ground above. 



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