54 Woodward —On the Bridlington Craq. 
Venus fluctuosa 6 
Wellina caleaniay ost. 53 15.2). —;|—|— 
T. obliqua . 2. 2. - 2. 2. «© f} | — | —] — 
A esoladunlars Sacer cece. eters — 
Mactra-elliptica fs. 3. —|—}|— 
Myatruncata. . . . . .|/—{|—{/|—|— 
Panopwa Norvegica. . . . —|—|— 
Saxicava arctica (sulcata). . ae 
Pholas crispata . 2. . 2. 7} — | —}| — | — 
o fo) a 
vegans: Seen ly ae iy 
GENERA AND SPECIES a E o 2 E 8 : 
oC eS I 
*Pectunculus glycimeris —|—|— B 
Nucula Cobboldiz . a O 
*N. tenuis . ae ee ees IB 
Yoldia oblongoides —|— A 
*Leda caudata . 3 — —— pels 
Ee pernulla o 64) ccc vemicnei ate —j|A 
@ardvum equlec seca anaes SS aa 18 
C. Islandicum . A 
Cardita analis? apane O 
Astarte borealis... s°-.-. -; —;|—|A 
A. var. semisuleata .. pm ISN 
ANS UM SCR Beli a a sees enon —|—|B 
PACES UG abate ce, tic ieen sein epotenty a a 1B} 
* A. crebricostata . ed VAN 
IAC COMPTESSA/ eee ave ys —|—|bB 
VinGensiGlataeesen a ek a. |) 1B 
Cyprina Islandica . . . .| —|—j|—j|—|B 
AX 
IX 
O 
B 
B 
B 
B 
AN 
B 
6 | 20 |. 384 | 44 
Mangelia pyramidalis appears to be the northern representative 
of our M. rufa. 
Columbella Holboellii is regarded by some as a boreal variety of 
the ‘ Mangelia’ nana of Forbes and Hanley. The Bridlington 
fossil is like the specimens from Finmark, Spitzbergen, and Green- 
land. 
Turritella erosa, Couth. (= T. polaris, Beck), is found living in 
Greenland and Iceland, Spitzbergen and Newfoundland. 
Margarita elegantissima is living on the coasts of Finmark and 
Greenland. 
Nucula Cobboldie differs from the Crag Shell in exhibiting a 
tendency to become smooth when approaching its full growth. 
Yoldia oblongoides, Wood. « I adopt this name to signify that the 
species is identical with that of the Crag. It is not the same with 
the recent myalis, as stated by Mr. Wood, but is more like limatula 
(Say) or hyperborea (Lewin), which most conchologists will consider 
varieties. 
