PLATH I. 
PAGE. 
FORAM INTER A: 25) Avoleiea ten otlccranoue stews ee teiay Gines leven cee aii ee he yore ae ala fal 
Figs. 1-2. Two specimens. Newton, Locality 186 A. 
ORTHIS! INEWTONIENSIS( Mie SP scents cyerersisielsileicieicreeoiaene 118 
Fig. 3. The internal cast of a pedicle valve, showing the mus- 
cular scar. Locality 186A. (x2). : 
4. A similar, but larger pedicle valve. Same locality. (x2). 
5. The internal cast of a brachial valve. Same locality. 
(GOPNe 
HENGCULELLEA 'STONEAINWA \Wihtitioo: csi cle ere ene ciel eerene elerenete a abe 
ee 
a 
a 
. A nearly perfect single valve, showing the peculiar surface 
markings. Newton, Locality 136A. (x2). 
AGRAULOS SARATOGENSIS: Woale@iecs.a-ee cies ceeee eee 118 
Fig. 
=] 
A large, nearly complete cranidium, with profile in out- 
line. Blairstown, Locality 175 A. 
. A large free cheek. Same locality. 
. A medium-sized pygidium. Same locality. 
co oO 
PRY CHOPARTA JBLATRIY Mes iSPss-s'a ccicietoln cvevece crtherstene eee 116 
Figs. 10-11. Two cranidia of average size. Blairstown, Locality 175 A. 
(Geo) 
Profile view of cranidium, in outline. (x5). 
Pygidium of average size. Same locality. (x5). 
1 
1 
wn 
PTYCHOPARIA. CALGIFEBA Walei?ai 2. )n\s some cheeeieie 117 
Fig. 14. The occipital segment and spine of a specimen which may 
belong to this species. Blairstown, Locality 175 A. 
(x2). 
(391) 
ee 
