227 



This species is intermediate between Criposcala and Circuloscalaj 

 the basal rib which is in an alignment with the posterior angle 

 of the aperture terminates a little in front of the umbilical funic- 

 ulus, and not at the outer angle of the aperture, as in Circu- 

 loscala. It has very distinctive characters, though simulating 

 CrisposcaJa echinophora and Cirsotrema j^leiojjltyUa. 



Dimensions. — Length, unknown ; height of body-whorl, 8 ; 

 width of body Avhorl, 6 ; of aperture, 2-25. 



Locality. — Blue clays at Schnapj)er Point ! 



7. Sealapia (Cireuloseala) orycta, spec. nov. 



Shell rather thin, elongate, imperforate ; whorls very convex, 

 almost disunited, variced, tessellated by thick spiral lirte and fili- 

 form costee. 



The spiral ornament consists of broad flat equidistant lir^e 

 alternating with smooth and somewhat-wider interspaces ; on the 

 penultimate whorl, there are five medial threads, succeeded an- 

 teriorly by four narrower ones, and on the posterior area there 

 are about eight threads. 



The transverse ornament consists of slightly-arched filiform 

 costae which by intersection with the lirae produce rectangular in- 

 terspaces on the medial and anterior areas ; there are two thick 

 filiform varices to each whorl. 



Aperture circular ; peristome entire ; base rounded, inter- 

 rupted by a raised convex anti-peripheral rib, dentate-serrated by 

 the costae passing across it ; columella margined by an adherent 

 funicular rib. 



The species has very distinctive characteristics. 



Dimensions. — Length, unknown; width of body -whorl, 3-5; 

 height of body-whorl, 5-5 ; of aperture, 2-5. 



Locality. — Eocene ; Muddy Creek ! 



8. Sealapia (Punetiseala) loxopleura, sijec. nov. 



Shell stout, rather slender, imperforate ; ordinary whorls six, 

 medially subangulated, separated by a well-defined linear suture; 

 apical whorls unknown. 



The spiral ornament consists of numerous (about 20 on the 

 penultimate whorl) crow^ded undulose threadlets, separated by 

 slightly-narrower punctated linear grooves. 



The transverse ornament consists of stout-filiform, oblique and 

 slightly-bent costse (about 20 on the penultimate whorl), which 

 are crenulated by the spiral lira? ; there are about three very 

 prominent oblique varices on the spire. 



Base angulated by a broadish depressed keel which is nodosely- 

 crenulated by the costae ; the area in front of the basal keel is 

 slightly concave and concentrically lirate. Aperture circular ; 



