VOL. xvin. (i) SOME INFERIOR-OOLITE BRACHIOPODA 55 



Terehratula degenerata, Upton, which occurs in the Lower 

 Trigonia-Grxi, differs from the present species — which is 

 most abundant in the Buckmani-Gni — in being monopHcate 

 instead of bipUcate. 



Some specimens of the Ter. painsimckensis-gvonp instead 

 of lengthening and becoming inflated with growth, remain 

 thin and expand transversely, ultimately assuming features 

 which we consider sufficiently distinct from those of Ter. 

 fainswickensis as to warrant separate designation. Such a 

 form is figured in Plate VII., figs. 17a, h and c, under the 

 name of Ter. cranhamensis sp. nov. 



An exceptionally large specimen of Ter. painswickensis 

 is figured in PL VII., figs, g^, h and c. 



TEREBRATULA RODBURGENSIS, sp. nov., PI. VIP 

 figs. 10a and h. 



T.l. Rodborough Hill, near Stroud. 



Hor. Clypeus-Gvit (top), r,. Schlcenbachi. 



Colin. L. Richardson. 



Description. — Shell, in outline, snbpentangular ; valves convex, the 

 pedicle or perforate valve more so than the brachial. Front margin 

 incipiently-biplicate. Beak stout and incurved over the umbo. Foramen 

 circular and moderate sized. 



Remarks. — This shell differs from its contemporaries 

 in most details and therefore should be easily identified if 

 found. One specimen has been procured up to the present 

 time. 



TEREBRATULA TUBULIROSTRATA,^ sp. nov., PI. VII, 



figs. 8a and b. 



T.l. Leckhampton Hill, near Cheltenham. 



Hor. Lower Trigonia-Gxit. r. Discitce. 



Colin. C. Upton. 



Descyiption. — Shell inflated, typically elongately-globular. Brachial 

 valve convex, somewhat carinated, umbo prominent. Pedicle valve also 

 very convex, with a conspicuous tubular beak perforated with a comparatively 

 small foramen. Beak ridges inconspicuous or absent. Anterior margin 

 broadly uniplicate to incipiently biplicate. 



I. Latin : tubulus, a little tube ; and rostratus, beaked. 



