350 The American Geologist. J""^ 
above by calicular budding, it differs from all the species of Lepto- 
pora with which the author is acquainted. The stems spring from the 
shallow cups below, are more or less round, very rugose and distorted 
and, crowding together at the top, the otherwise round cups become 
polygonal. From the calyx of one of the stems three small stems 
arise. No septa are observable nor are placenta, but the latter are 
■surely present. The cups are shallow and are pitted or cellular in 
appearance. 
The fine specimen figured was obtained from the Chouteau 
limestone at Annada, 'Wo. 
Trigeria? curriei, n. sp. 
Plate xxviii. 
Figs. 40, 41, 42. — \"iews of the brachial and ventral valves ani 
the front of the shell, respectively, twice natural size or two 
diameters. 
Shell longer than wide, plicated but with the plications more or less 
obsolete, except near the front of the shell. Young individuals, how- 
ever, are plicate throughout. The beak of the pedical valve is rather 
long and pointed with a triangular area beneath it and a delicate tri- 
angular foramen. Nothing is known of the inside of the shell. The 
shells vary from ij4mm. to 6 mm. in length and from i mm. to 6 
mm. in width. The specimen figured is 5 mm. by 4 mm. (length 
and breadth.) There is a slight sinus at the front margin of the 
brachial valve and sometimes one on the pedicel valve also. It is 
rather a rare form in the Louisiana (Lithographic) limestone at 
Louisiana, Mo. It is obtained, among other small forms, by washing 
the clay from between the limestone layers. 
This Httle brachiopod is named specifically for Rev. H. Cur- 
rie, of Thedford, Ontario, an excellent collector in the Hamil- 
ton group and a most obliging scientist. 
Dielasma? pediculus, n. sp. 
Plate xxviii. 
Figs. 43. 44. 45. — Brachial, pedicel and front views of a large 
specimen, two diameters. 
Length of a large specimen 43^, width 3^ mm. 
This little shell is smooth, rather flat, elongate, with a rather long 
pedicel beak, the end of which is perforate. It occurs abundantly in the 
clay seams of the limestone and is obtained by washing the soft ma- 
terial. It is found associated with the above species, Ambocoelia 
minuta and Chonetes geniculata in the Louisiana limestone at Louis- 
iana, Mo. 
Nucleospira barrisi? (white.) 
Plate xxviii. 
Figs. 46, 47, 48. — Three views of the brachiopod, natural size, as 
it occurs in the Louisiana (Lithographic) limestone at Louisiana, Mo. 
