- 202 



Subgenus 0Tilara3?s Bolt en. 

 Seotion Ohlaraj?s s. s. 



PSGTEK (CKLAI^YS) TAGIIJUIUS Jail. 



Peoten / Ohlsm-'S ) ornatus lamarclc ? vfv. va?inulus Dall, 1893, 

 Trans, ./agner ?ree Inst, ^ici., "'hilac'elphia, vol. 5, 

 pt. 4, pp. 715-716. 



? Peoten sp. (aff. P. gracilis Sov/. ' Toula, 1908, Jabrb . V. \. 

 geol. Reiclis., vol. 58, p. 711, pi. :'o, -^i^- . 7. 



SesorLption .- "Seven small valves of a s'oecies closely resem- 

 bling ^, ornatus v/ere obtained at Bowden; the form and sculpture 

 are practically the same, but the ribs (twenty-one to twenty- five) 

 are single, subequal, and not fasciculated, and are separated by 

 simple narrower interspaces not radially threaded. The young of 

 oK'^atus . as far as observed, seem to always have one or more inter- 

 stitial riblets. I therefore propose for the present form the 

 varietal name of vaginulus , which may be raiser! to specific rank 

 if the difference is confirmed by the characters of ad'ilt specimens." 

 ( Call, 1893). 



Type locality .- Bow den, Jamaica. 



Shell small, thin, subeqtti valve, suborbicnlar, the height 

 slightly e-ceeding the width, equilateral, erceptirig the auricles. 



