A CARBONIFEROUS FAUNA FROM NOWAJA SEMLJA. 165 



Devonian Caraarospira eucharis (Hall).* The features common to both are the 

 presence of a spondylium in the pedicle-valve, and that of a septum in the brachial 

 one ; but here the spondylium extends anteriorly to about three-fourths of the length 

 of the shell, whilst in Camarospira eucharis it is only about one-fourth of that length, 

 and its supporting septum is much shorter. 



It must be understood that the reference of this species to the genus Camarospira 

 is for the sake of convenience only, and cannot be substantiated without confirmatory 

 evidence from other important characters. In any case, enough is known to show that 

 it has no affinities to any of the smooth Camarophorids. 



StROPHOMENIDjE. 



Genus Schuchertella Girty. 



Schuchertella crenistria (Phillips). 

 Davidson, loe. cit, pi. xxvi. 



A few fragmentary specimens of this species are in the collection. Dr G. H. Girty 

 has fully explained his reasons for restricting the term Orthotetes to its original impli- 

 cation, viz. to septate forms allied to Derby a Waagen ; and for the group of Strepto- 

 rhynchus lens White, and of Spin/era crenistria Phillips, thus left anonymous, he pro- 

 poses the generic term Schuchertella. 



In the present determination it is assumed that Phillips' type-specimen belongs to 

 the aseptate form as interpreted by Davidson, t 



Orthotetid indet. (PI. II. figs. 23-23a.) 



A small Orthotetid, represented by a pedicle-valve and two brachial valves, is char- 

 acterised by its biconvex shape, with the hinge-line shorter than the greatest width of 

 the shell. The cardinal area of the pedicle-valve is very elevated, and the beak is dis- 

 torted; the brachial valve has no area. The ornamentation consists of fine raised lines 

 separated by broad sulci. 



This combination of characters gives it a superficial resemblance to Meekella (Ortho- 

 tetina) olivieri (de Verneuil), but sections made in both valves show the total absence of 

 the dental and septal plates characteristic of Meekella, and further, there is no median 

 septum as in Derbya and in Orthotetes [emend. Girty]. Access to the details of the 

 articulating process being impossible, I am unable to say whether this form should be 

 considered as an aberrant Schuchertella or be referred to the genus Streptorhynchus. It 

 would be interesting to prove the occurrence of a Streptorhynchus in the Cape Cherney 

 Limestone, since the genus is said by Schellwien to have a far greater vertical range 



* Hall and Clarke, Palaeontology of New York, vol. viii., pt. ii., 1893, pi. 1. figs. 46-52, p. 82. 



t G. H. Girty, "The Guadalupian Fauna," U.S.G.S. Professional Paper No. 58, 1908, pp. 156-199. 



