124 H« KEEPING AND E. B. TAWNEY ON THE BEDS AT 



from those labelled L % concava; indeed Edwards admitted it as 

 doubtfully distinct. 



Diplodonta obesa (Ed. MS.) exists in Edw. coll. from Barton and 

 Brack] esham beds. D. dilatata (Sow.), determined as such, is not in 

 Edw. coll. ; Dixon cites it from Bracklesham. 



Strigilla colvellensis (Ed. MS.) we found to be not unfrequent at 

 Headon Hill. $. pulchella (Ag.) is in Edw. coll. determined from 

 a single imperfect valve : it is impossible to say whether it is a 

 second species ; and we therefore omit it. 



Cardium Edivardsi (Desh.) is not in Edw. coll. from Brocken- 

 hurst; it is a Bracklesham shell. 



Cytlierea suborbicularis (Ed. MS.) we found at Colwell Bay and 

 also in the Brockenhurst zone at Whitecliff Bay. 0. suessonensis 

 (Desh.) : under this name we find in Edw. coll. Barton and Lower- 

 Eocene shells usually referred to C. tenuistriata (Sow.) ; we have it 

 from the Brockenhurst zone in "Whitecliff Bay. G. partimsulcata 

 (Ed. MS.) is from Long Mead End only ; we therefore omit it. 



Cyprina Scutellaria (Desh.) is solely from Lower-Eocene locali- 

 ties. C. Nysti (Heb.) is the only species from Brockenhurst in 

 Edw. coll. ; we have it from "Whitecliff Bay. 



Psammobia compressa (Sow.) is in Edw. coll. from Barton ; the 

 var. arcuata (MS.) is from Boydon and Brockenhurst; and var. 

 cestuarina (MS.) is, according to the labels, from Hordwell, Colwell 

 Bay, and Boydon. We have compared these examples, and cannot 

 see any valid differences ; we consider them all one species. 



Sanguinolaria Hollowaysii (Sow.) is not in Edw. coll. from Lynd- 

 hurst, but is a Bracklesham shell. The Geological Survey cite it in 

 error from Middle Headon beds of Whitecliff Bay. 



Tellina corbidoides (Ed. MS.) in Edw. coll., from Colwell Bay, is 

 a crushed specimen, undeterminable, but probably not the Hamstead 

 species ; we omit it. T. ambigua (Sow.) is in Edw. coll. labelled as 

 from Hordwell, but is probably not from Middle Headon beds, 

 although Forbes cites it from Colwell Bay. T. reflexa (Edw.) is a 

 Bracklesham shell, and does not occur above the "Upper Bagshot of 

 Long Mead End. T. headonensis (Edw.) is in Edw. coll. from Hea- 

 don Hill and Colwell Bay. T. splienoides (Edw.) is from Colwell 

 Bay. T. affinis (Ed. MS.) is in Edw. coll. from Brockenhurst and 

 Barton ; we found it also at Whitecliff Bay. 



Syndosmya colvellensis (Ed. MS.) seems founded on a single 

 minute valve. 



Scintilla angusta (Ed. MS.) is from Colwell Bay, Hordwell, and 

 Barton beds. 



Mactra fastigiata (Ed. MS.) which occurs abundantly at Headon 

 Hill, is from Hordwell in Edw. coll. M. filosa (Ed. MS.) from 

 Colwell Bay and Long Mead Erid (Upper Bagshot) we are unable to 

 consider a separate form, so rank it as a synonym. 



86len gracilis (Sow.) is in Edw. coll. from Brockenhurst and Bar- 

 ton beds. 



. Mya angustata (Sow.) was originally found by Prof. Sedgwick at 

 Colwell Bay ; Edwards has an apparently identical shell which he 



