98 ROYAL SOCIETY OF CANADA 



KuToRiiINA (iRANULATA (PI. "V.. figS. 2a tO d). 



Kulorqinti i/ranulafa, n. sp., Nat. Hist. Soc. N. 15., Bull, xviii., p. 18<J, pi. i., 



titrs. 2 ad. 



Sliell sub.slane'L' calciireou.^. llingeline straight, somewhat shoi-ter 

 than the lull width of the shell ; lateral margin straight near the hinge ; 

 iront margin broadly rounded. 



Venti-al valve convex, the umbo considerably elevated, the posterior 

 third of the shell somewhat more tumid than the rest ; lateral angles 

 somewhat flattened. The area api)ears to have a deltidium, about one- 

 fifth as wide as the length of the hinge-line ; ' this line, when viewed from 

 behind appears to be bent up in the middle. Interior. — On the posterior half 

 there are a number oï low vascular ridges ; two of these inclose a median 

 groove, which extends to within a third of the front of the valve ; there 

 are about three other ridges on each side. These ridges are most distinct 

 near the umbo, and about three or four are found in the space of one 

 millimetre. 



The doi"sal valve is flatter, and has the umbo depressed to the cardinal 

 line, and the sides of the valve towards the hinge much flattened. Interior. — 

 There is a median septum extending about one-third of the length of the 

 valve, and faintly indicated for another third to a point where there is a 

 small pit on the inner surface of the valve ; and there are also radiating 

 lines as in the ventral valve, but more numerous. 



Sculpture. — The surface is minutely granulated. On the .somewhat 

 tumid posterior third of the valve concentric strije are faintly visible, but 

 they become distinct on the anterior part, and there are very tine radial 

 lines, giving to the summit of the intervening ridgelets a beaded appear- 

 ance ; at certain intervals stronger concentric striae of growth show on 

 the surface of the shell ; there are about five or six of these on its sur- 

 face. 



Size. — Length, 4 mm.; width, G mm.; depth of the ventral valve, 

 1^ mm. 



This species is smaller than K. cingulata and ditlers in its ornamen- 

 tation ; it is about the size of K. pannula, but that species has a diagonal 

 cancellation ; it has considerable resemblance to the Swedish K. cincjuhita 

 var. pusilla, Linre.," but that is said to have a corneous shell. Iphidea 

 ornatella^ which resembles K. granulata in shape and size also has a cor- 

 neous shell. 



' One example of a ventral valve, apparently of the same ypecies as this lias no 

 deltidium, possibly there are two species. 



-' On the Brachiopoda of the Paiadoxide.H beds of Sweden, G. Linnarssou, Stock- 

 holm, 1H7(5, p. 25, pi. iv., figs. 5;^, TA. 



•' IbUJ., p. 2."), pi. iii., Hgs. 42, 4:1. 



