278 Scientific Intelligence. 
A single Coelospira occurs in the Corniferous limestone, which, so far 
as known, possesses no characters differing from Celeospira concava of 
the Lower Helderberg group. 
Under the Family Rhynchonellide, the species usually referred to the 
iffer from recent species referred to 
chonella has come to be so well known, and many of the species have 
been described under the generic designation, the name is still retained. 
Tethys, Billingsi (in place of R. thalia of Billings, name preoccupied 
Carolina (n. s.), Royana (n. 8.) ; of the Hamilton group, 2, (Steno- 
cisma) Hi ‘= 
s appho, congregata, prolifica (n. s.), dotis (n. s.), car 
(nu. s.); of the Chemung group, the following species ar ; 
ynchonella ( } eximia, Stephani (n. s.), duplicata, contracta, 
The genus Leiorhynchus is retained for such forms as L. limitaris and 
L. quadricosiata which present, among other distinguishing features, a 
division or bifurcation of the plications on the mesial fold and sinus. The 
_Pentamerella includes P. arata (= Pent aratus), P. papil 
sus (= Pe papilionensis), P. micula (n. 8.), P. obsolescens a 
inet); Gypidula includes @. occ ntalis (= Pentamerus oceid: 
Geol. re of Iowa), and G. leviuscula (n. s.); Amphigenia 1s Py 
posed to include the original Pentamerus elongatus of Vanuxe - 
characters unlike any other genus of the pentameroid a 
the A. elongata, and a variety undula The species formerl 
as sudtrigonalis appears to be only a variety of the A. elongat ‘5 
eS et | with doubt, and a single species, 2. ? Jo 
) eudora, from the Chemung group; and Centronella, the C, gles 
Sages, C. alveata, C. impressa, bet C plese (n. s.). : 
