EXPLANATION OF PLATE XVII. 
MUREX SHILOHENSIS Heilprin (p. 97). 
FG. 1. Front view of the type specimen, enlarged. 
MuREX SHILOHENSIS var. BURNSL Whitf. (p. 98). 
FiG. 2. View of specimen described, enlarged. 
CANTHARUS CUMBERLANDIANUS Gabb (p. 103). 
FIGs. 3,4. Front and back views of an imperfect specimen, the beak of which had been injured 
during life. 
5. Back view of a more elongated individual. 
6. Front view of Mr. Gabb’s type specimen. 
FPASCIOLARIA Woopt Gabb (p. 98). 
FIGs. 7,8. Two views of the type specimen, natural size. 
FASCIOLARIA (LYROSOMA) SULCOSA Conrad (p. 100). 
Fies. 9,10. Two views of a small imperfect specimen, twice enlarged. 
BusYCON SCALARISPIRA Conrad (p. 102). 
FIGs. 11, 12. Two views of the most perfect specimen observed. 
BUCCINANOPS VARIABILIS Whitf. (p. 107). 
Fics. 13. View of a young specimen. 
14,15. Two views of a larger specimen. p 
16, 17, 18. Views of three other specimens, showing variations of form; all figures enlarged. 
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