216 Annals of the Carnegie Museum. 



Suborder CONULARIDA 4 Miller and Gurley. 



Family Conulariid^e Walcott. 



Genus Conularia Miller. 



Conularia triangulata Raymond. 



(Plate LIV, figure 18. ) 



Conularia triangulata Raymond, 1905, American Journal of Science, 



Vol. XX, p. 379. 



A rare fossil in the Chazy is a small, slender Conularia, which is 

 almost triangular in cross section. It is not, however, three sided, as 

 it at first appears, but really six-sided, as each of the angles is trun- 

 cated near the apex so that there are three broad faces and three very 

 narrow ones. 



Description. 



Shell small, slender, slightly curved, six sided, but three of the sides 

 are so narrow as to give the shell an almost triangular cross section. 

 The narrow faces alternate with the wide ones, the narrow faces trun- 

 cating the angles which the wide faces would make if prolonged till 

 they met. Along each of the faces, both wide and narrow, is an ele- 

 vated line which extends longitudinally along the center of the face. 

 The surface markings consist of numerous fine transverse striae which 

 bend backward on crossing the raised line. The best specimen in the 

 writer's collection is broken at the tip and at the aperture, but, as it 

 stands, is 38 mm. long. The original length was at least 8 mm. more. 

 At the larger end the three wide faces are each 7 mm. wide, and the 

 narrow faces are each 1.5 mm. wide. At the small end the wide faces 

 are 2.5 mm. wide and the narrow faces are reduced to practically 

 nothing, thus showing that in young stages the shell was triangular. 



Locality. — The type, which is in the collection of the Carnegie 

 Museum, was found in the upper part of the Chazy on the southeast 

 point of Valcour Island (Cystid Point). This species occurs also 

 near Smuggler's Bay in layers a little lower in the formation. 



Species Unrecognizable or Belonging to Other Formations. 



Euconia amphitrite (Billings). 



Pleurotomaria amphitrite Billings, 1865, Paleozoic Fossils of Canada, 

 Vol. I, p. 32. 



4 This suborder is left with the Gastropoda as the classification used in Eastman's 

 translation of Zittel's " Griindzuge " is here followed. 



