﻿572 MISS J. DONALD ON GASTEROPODA ER01E [Aug. I905, 



Subgenus Cyrtostropha, Don. 

 Cyrtostropha torqjjata ? (M'Coy). 



Two, very imperfect, external moulds possibly belong to this 

 species, but the state of preservation is so bad that it is impossible 

 to be sure. 



Dimensions. — The best specimen consists of about six whorls 

 in a length of 8 millimetres ; width = 3 mm. 



Horizon. — (67a) Upper Ludlow. 



This species is characteristic, elsewhere in Britain, of the Upper 

 Ludlow. It is not recorded from Gothland. 



Family Loxonematid^, Koken. 

 Genus Loxonema, Phillips. 



LoXONEMA SINTTOSTTM ? (SoW.). 



A much-worn internal mould bears a great resemblance to this 

 species, but I can only refer it here with a query, as it is so 

 imperfectly preserved. 



Dimensions. — The specimen is embedded in the matrix, and 

 shows only three whorls, which have a length of 14 millimetres. 



Horizon. — (99) Wenlock. 



Elsewhere in Britain Etheridge recorded it from the Upper Llan- 

 dovery, Lower Ludlow, and Aymestry Limestone. I have also seen 

 specimens from the Wenlock of Dudley. An example from the 

 Middle Devonian of South PetherWyn is referred to this species 

 by Phillips, and Mr. Whidborne considers that it has been correctly 

 identified. 



In Gothland it occurs in the Upper Llandovery and Wenlock, 

 that is, in Lindstrom's stratum a. 



Loxonbma Grindrodii (?) Don. (PI. XXXVII, figs. 7-9.) 



There are three specimens of Loxonema which have the surface too 

 poorly preserved to permit of their being identified with certainty. 

 The biggest one shows traces of spiral strise, which, together with its 

 general form, cause it to resemble L. Grindrodii, but both it and the 

 other two examples are more slender. This may arise, partly at 

 any rate, from the manner of preservation ; or, on the other hand, it 

 may indicate that they belong to a distinct species. It hardly seems 

 advisable to found a new species on specimens so imperfect, there- 

 fore I refer them for the present with a query to L. Grindrodii. 



Dimensions.— The biggest example figured (PI. XXX VII, 

 fig. 7) consists of portions of five whorls in a length of 28'5 milli- 

 metres ; the width of the penultimate whorl=10 mm. The specimen 

 showing the aperture, and having only three whorls preserved, is 

 18 mm. long, and the penultimate whorl is 7*5 mm. wide. The 

 smallest specimen figured (PL XXXVII, fig. 9) is 11*5 mm. in 

 length, and consists of about nine whorls. 



Horizon. — (63) Lower Ludlow, Aymestry Limestone included. 



