DEVONIAN FAUNAS. 3T1 
ANOPLOTHECA CONCAVA (Hall). 
See, also, p. 316, pl. XXXVII. 
Specimens of a small species of Anoplotheca, indistinguishable from 
specimens in the New Scotland beds of the Helderbergian series, have 
been observed in the Onondaga limestone at several localities. Hall, 
after first referring this Onondaga limestone shell to the Helder- 
bergian species,* afterwards established a new species for it, with the 
name camilla,t but the New Jersey specimens at least cannot be dis- 
tinguished from A. concava. 
MOLLUSCA. 
GASTROPODA. 
PLATYCERAS sp. undet. 
Fragments of capulid shells, which may be referred to the genus 
Platyceras, are occasionally met with in the Onondaga limestone, but 
no specimens perfect enough for specific identification have been seen. 
LOXONEMA sp. undet. 
Plate LI., Fig. 20. 
A few specimens of an elongate, coiled shell have been observed in 
the Onondaga limestone. All are too imperfect for identification, but 
may be referred provisionally to the genus Loxonema. 
<8 Jet INS MGS wally LINES ie ee 
7 Pal. N. Y., vol. IV., pl. 52, figs. 13-19. 
