676 Systematic Paleoxtology — Upper Devoniax 



Genus LOXONEMA F^hillips 

 LOSOXEMA HAMILTOXI^ Hall ' 



Plate LXIX, Figs. 1, 3 



This Hamiltou species occurs occasionally in the Parkhcad member 

 of the Jennings. 



Occurrence. — Jexnixgs Formatiox, Pvrkhead ^Iember. \A'ilIiams 

 Eoad, on Polish Mountain, 1660. 



Collection. — Maryland Geological Survey. 



LoXONEMA TEREBRUM Hall 



Plate LXIX, Figs. 3-7 



Loxonema terebra Hall, 1879, Pal. of N. Y., vol. v, pt. ii, p. 48, pi. xiv, 



figs. 6, 7. 

 Loxonema terebra Grabau and Shinier, 1909, Index Foss. N. Amer., vol. i, p. 



694, fig. 992. 



Description. — Shell elongate ; spire rapidly ascending ; volutions 

 slightly rounded, bearing strong elevated, obtusely angular and sigmoid- 

 curved surface plications which bend backward a little below the suture 

 and make a more gentle curve forward to the base of the volution. 



Height 60 mm.; diameter 16 mm. 



Few specimens of this species have been seen whose preservation has 

 permitted the retention of the surface characters though tlie shell appears 

 to be common at the localities cited. It is also locally almndant in the 

 upper Chemung beds of New York. 



Occurrence. — Jexntn^gs Forimation, Chemuxg Member. Near Green 

 Glade Run; National Koad 61/2 miles west of Frostburg; Town Creek, 

 2123, 2228. 



Collection. — Maryland Geological Survey. 



LOXOXEMA STYLIOLUM Hall 



Plate LXIX, Figs. 8-10 



Loxonema styliola Hall, 1876, Illustrations Devonian Foss. Gastropoda, p. 14. 

 Loxonema styliola Hall, 1879, Pal. of N. Y., vol. v, pt. ii, p. 48, pi. xlv, 

 figs. 8, 9. 



'For synonymy and description see page 294. 



