Vol. 51.] OF THE MID-COTTESWOLDS. 453 



collected, good and bad, for the purpose of noting the percentage of 

 different plaited forms, the following results were obtained : — 

 1 plait, 15 ; 2 plaits, 63 ; 3 plaits, 22 per cent. 



Though Rh. cynomorjoha occurs in the Cotteswolds about 100 or 

 more feet above Rh. cynoprosopa, it is most probably the descendant 

 of that species, and has had nothing to do with Rh. cynocephala or 

 Rh. cynica. 



This species is essentially a Gloucestershire fossil, and it seems 

 to be of very restricted geographical occurrence. It is plentiful at 

 the Frith Quarry, near Stroud ; it also occurs at Scotesquar, on the 

 other side of the Painswick valley, at Notgrove Station at the other 

 side of the county, always high up in the Oolite Marl series 

 (see p. 459), and at Cranham Wood, near Birdlip. 



Rhynchonella aff. "Weigandi, Haas & Petri. (PI. XIV. fig. 5.) 



1882. Rhynchonella Weigandi, Haas & Petri, ' Brach. d. Juraf. Elsass-Loth- 

 ringen,' Abh. z. geol. Spez.-Karte v. Elsass-Lothringen, vol. ii. pt. ii.pl. v. iigs. 13 a-c. 



1882. Rhynchonella cynocephala, vav., S. Buckman, ' Inf. Ool. Brach.,' Proc. 

 Dorset Nat. Hist. & Ant. Field-Club, vol. iv. p. 42. 



A globular Rhynchonella of the cynocephala-type, with uniplicate 

 mesial fold not much elevated. 



In the reference given above, I remarked that a 1-plait variety 

 of Rh. cynocephala (Stephensi) occurred at Drimpton itself, not in 

 conjunction with the other forms. They are more globular little 

 fossils than the 1-plait forms of Stephensi, and are very like the 

 above-quoted figures of Rh. Weigandi, except in having a more 

 elevated mesial fold and less conspicuous lateral ribs. They are 

 rare ; I have them from Drimpton and from Netherton in Dorset, 

 from the base of what is known as ' Inferior Oolite limestone : ' 

 that is, beds deposited rather before the Murchisonce hemera strictly 

 so-called. 



Rhynchonella, sp. (PI. XIV. fig. 6.) 



A globular Rhynchonella of the cynocephala-type, with biplicate, 

 somewhat elevated, but not well separated mesial fold. 



Two specimens in my collection from Middle Chinnock, near 

 Haselbury, Somerset, differ decidedly from Rh. Stephensi in their 

 globose rounder form and less separated mesial fold. They may be 

 2-plait forms of the species mentioned above (Rh. aff. Weigandi) ; 

 but it is uncertain whether they did not live a little earlier. 



Rhynchonella Brasili, sp. n. (PI. XIV. fig. 7.) 



A small, circular, depressed shell of the cynocephala-ty^e, with 

 obscure, not elevated, 2-plait mesial fold. 



The depressed form, and the want of elevation of the mesial fold, 

 separate this shell distinctly from any of the foregoing. It occurs 

 at Gorton Downs, Somerset, and lived during the Murchisonce or, 

 less probably, bradfordensis hemera. As a specimen of the same 



