2i6 University of Texas Bulletin 



Fig. 38, cross-section; fig. 39, side view; fig. 40, venter, of inner 

 whorl of the specimen figured in fig. 41 ; natural size. Junction 

 of Grilliam and Road canyons. 



Pig. 41, side view. Plaster cast of outer whorl of the specimen 

 illustrated in Fig. 38-40; natural size. Junction of Gilliam and 

 Road canyons. 



Fig. 42, ornamentation on a large specimen; natural size. Moun- 

 tain north of Leonard Mountain. 



Fig. 43, parts of two external sutures of specimen illustrated in 

 fig. 42; natural size. 



Fig. 44, external suture of the specimen illustrated in fig. 38-41; 

 natural size. 



Fig. 45 and 46, external sutures of smaller specimens; natural size. 

 Junction of Gilliam and Road canyons. 



Fig. 47, internal suture of small specimen ; natural size. Mountain 

 north of Leonard Mountain. 



