Permo-Carbonifcrous /Immonoids of the Glass Mountains .233 



Plate XI. 



Fig. 1-27. . Waagcnoceras Dieneri nov. sp. — Zone of M'aagenoceras (Word form- 

 ation). — Junction of Gilliam and Road eanyon.s, Glass Mountains. 



Fig. 1, side view; fi.^'. 2, front; fig. 3, nearly complete external 

 suture, natural size. The internal suture of this specimen, illus- 

 trated in Plate X, fig. 2H, is taken from the whorl imnjediately 

 following the one figured in fig. 2; part of the whoi'l where the 

 internal suture was taken from, can still be s(,'cn on the lower 

 righthand corner of fig. 2. 



Fig. 4, front; fig. .^), external suture taken from thq outermust 

 whorl; fig. 6, external suture taken from the smaller whorl of 

 the same specimen; natural size. 



Fig. 7, venter; fig. 8, front; fig. 9, side view; fig. 10, external su- 

 ture; natural size. 



Fig. 11, front; fig. 12, venter, of the same specimen; twice natural 

 size. 



Fig. 13, venter; fig. 14, side view; fig. 15, front; natural size. From 

 mountain north of Leonard Mountain, Glass Mountains. 



Fig. 16, front ; fig. 17, venter, of the same specimen ; twice natural 

 size. 



Fig. 18, venter ; fig. 19, side view ; fig. 20, front ; natural size. 



Fig. 21, venter; fig. 22, front, of the same specimen; twice natural 

 size. 



Fig. 23, venter; fig. 24, side view; fig. 25, front; natural size. 

 . Fig. 26, front; fig. 27, venter, of the same specimen; twice natural 

 size. 

 Fig. 28-45. .Paralecanitcfi aliudensis nov. sp. — Zone of Pcrrinitcs (Leonard 

 formation). — South of intrusive plug on Capt. James's ranch, 

 Altuda Mountain, Brewster County. 



Fig. 28, side view of one of the largest specimens ; natural size. 



Fig. 29, side view of a large fragment; fig. 30, venter; natural size. 



Fig. 31, venter of the same specimen; twice natural size. 



Fig. 32, side view ; fig. 33, venter ; fig. 34, cross-section ; fig. 35, ex- 

 ternal suture; natural size. 



Fig. 36, venter ; fig. 37, cross-section, of the same specimen ; twice 

 natural size. 



Fig. 38, side view of small specimen ; fig. 40, front ; natural size. 



Fig. 39, front of the same specimen ; twice natural size. 



Fig. 41, side view of small fragment; fig. 42, cross-section; fig. 43, 

 venter; natural size. 



Fig. 44, cross-section.; fig. 45, venter, of the same specimen; twice 

 natural size. 



