Subgenus Pseixdamusiiun H. aiii A. Adams. 

 Section PseuclamusiTTm s. s. 



PSGTEE {PS,TJDAI>:U3IUIvI) GIT^PYI Dall , 



T^e:;ten -f ^: . .1 .., ■ 2Z22li.-'^all, ^. ., . . ..^^..er Free Inst. 



Sci., Phila-^elphia, vol. 3, pt. 4, pp. 718, 755, pi. 54, 

 figs. 12, 13. 



Descriotlon .- "shell G::iall , suborTDicular, moderately? convex, 

 smooth, vath the surface oovered with microscopic 'Jamptonectes 

 striation; ears small, the anterior slightly larger, all with 

 very minute radiation anrl concentric lines; notch narrow, small, 

 with no ctenolium; interior smooth, without lirae or developed 

 crura; tr-jces of the auricular crura alone 'oerceptible; cardinal 

 margin hearing a sharply cross-striated, very distinct provincu- 

 lum; "basal margins flattened, posterior margin slip-htly compressed. 

 Alt. 6, lat. G mm. 



"The abimdance and ujiiformity of Ihis little shell testify to 

 its a'lult character. Occasional indivi'-"'uals shav a thickened line 

 internally on each side, on the lower e'ges of the suhmargins, 

 like some recent species, an-'i also traces of coloration in hlotches." 

 (Dall, 1898). 



Type locality .- Bow den, Jamaica. 



