52 



TEMXOCniLUS GUEENENSE, 11. sp. 



Phih' V, Fi(). 3, Idleral cieir, the hodj/ chdmhcv and pari of Die (tir 



i-Iiamhrrs not ]>res('rv<'d. A transverse section tieliuj 



trapezoidfd in outline, the dotted line 



in the figure in tlic text shonhl 



he cnidracted. 



Fijr. 1, transvpi'sc section, but tho dotted line sliould ho contrneted 

 to a trupczoidal (iiitliiic. 



Bpccit'B very large, subdiscoidal, and consisting of five or more 

 volutions, though our specimen, being imperfect, show's less than 

 lour. rmV)ilicus very wide, perforated and discloses about four- 

 fifths of tlie dorso-vcntral diameter of cacli inner turn. Transverse 

 section subtrajjezoidal. Our s]>ecinn'n is injured upon one side, and 

 iienee a eornn-t transverse section could not be taktMi from it; it is 

 rlcar, liowi'vrr. that the sides are not equal, tliat a section is sub- 

 IraiX'ZoidMi. and that the dotted line drawn i)y tin- arlist. in tlie 

 figure, siiould l)e considerably contracted. The lateral diameter is 

 near one third greater than the dorso-ventral. The V(Mitral side is 

 highly conve.x ami subangular subeent rally, the lateral sides are more 

 highly convex^ subangular. and bear on the angular ridge a few very 

 large obtuse nodes, aliout b'U oi- twelve nodes on each whorl. The 

 contact furrow is not disclosed in our spi'cimen. Tlu' sutures are 

 direct on the uinbilicjd side, but form broad saddles over the angles 

 with sliallow iidervening loljes. '^Phe se])ta are distant, on the \-entral 

 side, about om--third the dorso-ventral dianu'ter. 



Tlie siphuncle is small, oidy slightly cNpanded within the air cham- 

 bers, and situated on the ventral side of the center or between the 

 subangular ridges on the lateral sides. Outer shell and living cham- 

 ber unknown. 



