ee 
PLATE LXII. 209 
ACROTHELE PROLES Matthew—Continued. 
Fieure 4. A cast of the exterior of the ventral valve, preserving a portion of the shell. From Locality 13m, 
Middle Cambrian sandstone of Division E3f of Matthew’s Etcheminian, Gillis Brook, Cape Breton, 
Nova Scotia. University of Toronto, Canada. Type specimen, figured by Matthew [1902b, Pl. 
XVII, fig. 3a]. 
4a. Fragment of the interior of a dorsal valve (locality unknown). University of Toronto, Canada. The 
specimen from which this figure is drawn can not be identified with any of the figures given by Mat- 
thew [1902b, Pl. XVII, figs. 3a-e]. 
BorsrorDIA PULCHRA Matthew (p. 607). 
Ficure 5. Exterior and side view of ventral valve. (See note following fig. 5 1.) 
5a. Exterior of ventral valve, with reticulate surface ornamentation on young shell only. U.S. Nat. Mus 
Cat. No. 52047a. 
5b. Exterior of ventral valve. U.S. Nat. Mus. Cat. No. 52047b. 
5c. Exterior and side view of dorsal valve. (See note following fig. 51.) 
5d. Exterior of dorsal valve. U.S. Nat. Mus. Cat. No. 52047c. 
5e. Exterior of ventral valve. U.S. Nat. Mus. Cat. No. 52047d. 
5f and 5f. Top and back views of a ventral valve. U.S. Nat. Mus. Cat. No. 52047e. 
5g. Cast of the interior of a ventral valve. U.S. Nat. Mus. Cat. No. 52047f. 
5h and 5j. Casts of the interior of dorsal valves. U.S. Nat. Mus. Cat. Nos. 52047g and 52047h, respectively. 
5k. Portion of surface, greatly enlarged, of the specimen represented by figure 51. U.S. Nat. Mus. Cat. 
No. 520471. 
51. Exterior of a dorsal valve. U.S. Nat. Mus. Cat. No. 52047i. 
The specimens represented are all from Locality 2y, Middle Cambrian sandstone on Catons Island, Long Reach, 
St. John River, New Brunswick, with the possible exception of the specimens represented by figures 5 and 5c, which 
can not now be located in the collections of the United States National Museum. These figures may have been 
drawn from specimens loaned to the Museum and since returned. 
62667°—vou 51, pr 2—12——_14 
