DEVONIAN FOSSILS 95 
BRACHIOPODA 
Genus CARINIFERELLA Schuchert and Cooper 
Cariniferella alpha sp. nov. 
EL IIT, Біра, 24. 7. 
Type Material. Holotype consisting of the steinkern of a 
ventral valve, specimen 27,202 from locality G 22. Paratype con- 
sisting of the steinkern of a dorsal valve, specimen 27,219 from 
locality G 23. Chonetes baragwanathi sp. nov. oceurs on the same 
face of the specimen. 
Description of Holotype. Ventral valve sub-orbicular in out- 
line, moderately convex. Hingeline straight, less than greatest 
width of shell; cardinal angles obtuse; rounded anterior border. 
Narrow low fold down midline. Length 2-1 em., width 1-6 em., the 
measurements being taken in one plane, i.e., not following the 
convexity of the shell surface. Interarea smooth, comparatively 
high (2-5 mm.), apsacline. Beak comparatively prominent, in- 
curved. 
Interior with deep delthyrial cavity; teeth strong. Well-defined 
dental plates, which in the holotype are continued as faint ridges 
which recurve round the anterior ends of the diductor sears. 
These ridges are not seen in all specimens. Diductor scars elon- 
gate, reaching a point 1 em. from the umbo, i.e., nearly half way 
down the length of the valve; elevated adduetor traek, adjustor 
scars narrow, short, posterior to diductor impressions. 
External ornament shown on margin of internal surface of 
valve, and is multieostellate, frequency of costellae being 25-30 
per em. 
Description of Paratype. Dorsal valve of similar outline to 
ventral valve. Convex, but less so than ventral valve. Strongly 
developed carina or sinus down midline of shell; anterior com- 
missure suleate. Ornamentation multicostellate as shown round 
edge of steinkern; increase by bifurcation. Interarea smooth, 
anacline. Sockets deep, oblique; brachiophore plates widely 
divergent, high, merged with median callus ridge which fades 
into the carina down the midline. Cardinal process small, shaft 
narrow, serrated with almost vertical striae at the posterior end. 
The cardinalia are all close to the posterior margin of the shell. 
Muscle field of dalmanellid type, ovate, divided mesially by 
the deep sulcus characteristic of the genus; almost surrounded 
laterally and posteriorly by ridges, which are crossed obliquely 
in two places on each side by faint furrows, 1.е., ridges іп the 
steinkern. 
