98 
Guhsania n. gen. 
(Guhsarij an Indian chief) 
Compressed serpenticonic, evenly ribbed inner whorls passing to 
oxy conic coarsely ribbed outer whorl. Septicarinate. Sublatum- 
gradumbilicate. Angular umbilical margin. Fairly developed suture-line, 
with wide-stemmed, tripartite, slightly asymmetric first lateral lobe. 
For further details see description of the genotype. 
This genus is parallel in development to the “liostraca group” of the 
genus Dorsetensia S. Buckman 1 and like it attains the oxyconic outer 
whole and upright angular inner margin, but retains the ribbing through 
all stages of growth, a broader umbilication, and a more developed suture- 
line. Genotype, Guhsania hella n. sp. 
Guhsania hella n. sp. 
(hellus, trim) 
Plate XXV, figure 1 
Diameter 
Mm. 
138 
111*7 
81*8 
45*2 
Height of whorl 
♦ . , , t t . 
42-1 
42*5 
42*7 
42*7 
Thickness of whorl 
« 
21-3 
• « » « 
23*0 
24*8 
Width, umbilicus 
« 
28-6 
28*4 
28-8 
— 
The specimen is somewhat distorted and the measurements are 
approximate; allowance is made for the keel. Chiefly core, very little 
of test preserved. Entirely septate. 
Compressed serpenticonic on inner whorls, becoming lenticular 
oxyconic on outer whorls. Moderately involute, sublatumbilicate, 
gradumbilicate, umbilical margin angular, umbilical area very narrow and 
vertical to plane of symmetry of shell. Whorl section of inner whorls 
compressed ovate, sides somewhat flattened. Section of outer whorl 
becoming sagittate, thickest near the inner side. Venter of inner whorls 
rounded (amblygastric), surmounted by a rather small, hollow keel, 
which leaves a low ridge and traces of sulci on the core. Venter of outer 
whorl fastigate (oxygastric), with rather small, hollow keel (septicarina) 
which leaves, on the core, a smooth, narrow partition band truncating the 
sharp venter. The oxygastric venter begins at a diameter of about 80 mm. 
The inner whorls have numerous, small ribs, nearly straight on the 
sides and curved forward near the venter. The outer whorl has, on the 
dorsal part, straight, broad, low, rounded undulations, which die out 
ventrally. The total amount of forward curvature of the ribs and growth- 
lines cannot be determined, for so little of the test is preserved; it must 
be considerable, however, at least on the inner whorls. 
The suture-line is fairly complex, with somewhat deep saddles, and 
the external saddle is narrow, relatively of about the width of the lateral 
saddles. The first lateral lobe is a little longer than the external lobe, 
i Mon. Infer. Ool. Ammon.. Pal. Soe., p. 30S (1892). 
