358 
THE GEOLOGIST. 
Clipnenia complanafa, C. erafa, Trochoceras discoideim^ Gyroceras irivolvis^ G. 
Matheriy G. utidulaium, G. nereus, G. eryx, G. cy clops, G. nais, G. (Cyrioceras ?) 
spinosum, Cyrtoceras ev.genium, Cjason, C. morsum, C. metula, Aploceras (Cyrtoceras) 
liratum, Gnmphoceras beta, Orthoceras pelops, 0. tetricum, 0. foliatum, 0. baculum, 
0. thoas, 0. Iiyas, 0. multicinctum, 0. profiindum, 0. snbulatum, 0. constriciHm, 0. 
exile, 0. crotalum, 0. nuntium, O.perelegans ?, 0. cegea. Crustacea — Calymene platySy 
Dalmania anchiops and var. armata, D. selenurus, D. cegeria, D. coronata, D. wa- 
crops, D. adspedans, D. myrmecophoras, D. heh na, D. calypso, D. pleione, U. eriva^ 
B. bifida, D. Booi/ni, Homalonotn.s D'dcayi, Phacops bufo, P. rana, P. cristata, P. 
hombifrons, P. cacapona, Proetiis Conradi, P. angustifrons, P. hesione, P. clarus, P. 
crassiiiiarginatus, P. canaliculatv.s, P. Vernnel/i, P. Haldemani, P. Rowi, P. maryin- 
alis, P. macrocephahis, P. anncidatus, P. occidens, P. longicaudatus, Lic/ias armatus, 
L. grandis, Acidaspis sp., Beyrichia jmnctulifera. Leper ditia cayuga, L. sphiulifera, 
L. sencca. Annelida — Spirorbis angulatus. Cuinoidea — Ediocrinus pyriformis^ 
C/ieirocrinus darns, Ancyocrinvs bulbosus, A. spinosus, P/atycrinvs enensis, P. ebora- 
ceus, Poteriocrinus vassa, P. nydeus, C. diffasus, P. nareus, P. verticillus, P. mdentus, 
Cyathocrlnus bulbosus, Forbesiocrinus lobatus, F. nunlius, Rhodocrinus s.g. Acantlio- 
criniiS ? nodulosus, A. gracilis. Ph. spinosus, Tremaiocrinus spinigervs, Adinocrinus 
nyssa, A. eucharis, A. prcecursor, A. cauliculus, A. calypso, A. jwcillum, A. s.g. Me- 
gistocrinus depressus, M. Ontario, Cacabocrinus speciosus, C. Troosti, C. liraius, C. 
liratus var. mu'tilira, C.glyptus, and var. intermedius, C. lamellosas, Myrtillocrimis ? 
americanus, Haplocrinus clio, Nucleocrinus elegans, N. lucina, and var. N. Verneuli, 
Pentremites Iceda, P. calyce, P. Maia, P. Whitei, P. Lycorias, Eleutherocrinus Whit- 
fieldi, Codaster pyramidatus. Brachiopoda — Zygospira (new genus founded on Atrypa 
modesta), Meristella (new genus founded on Atrypa quadricosfa), and A. mesacostalis^ 
Lingula tigea, L. palceformis, L. exilis, Discina alleghania. Crania Hamiltonitv, C. 
crenistriata, C. Leoni, Onthis lepidns, 0. cydas, 0. penelope, 0. leucosia, 0. soUtaria, 
Ortliisina ardostriata. Or. alternala, Amboccelia gregaria, Vitudina pustulosa, Spirifer 
vennsius, Trematospira gibbosa, Phynchospira nobilis, Rh. lepida, Atrypa pseudomar- 
ginalis, Merista Haskiai, 31. Barrisi, M. doris, M. multicosta, M. limita.ris, M. quad- 
ricostata, M. mesacostalis. 
Professor Hall appends an amendment of the description of his genus 
Pholidops, and throws some doubts to the Gonialites Patersoni figured in 
the State Eeport, p. 99, belonging to the Hamilton shales, recent evidence 
indicating that it may be a Portage fossil. Eleven plates of figures are 
given. 
In the January number of the ' American Journal of Science,' Professor 
A. Winchell enters the list in respect to the subject brought under dis- 
cussion by Colonel Jewett's letter in November last, namely, the identi- 
fication of the Cattskill Ped Sandstone group with the Chemung. " ]N^o 
one who has recognized the carboniferous aspect of the fauna of the Mar- 
shall group of Michigan, with its equivalents in the West, can," he says, 
" feel any surprise at the anuouiicement ;" and he adds the following re- 
sults of his own investigation during the past eighteen months : — " Species 
common to Michigan and Eockford, Indiana, 7 ; to Michigan and Bur- 
lington, Iowa, 7 ; to the three localities, 3 ; to Eockford and Missouri, 6 ; 
to Burlington and Ohio, 2 ; to Burlington and Xew York, 3 ; besides an 
almost universal identification establishing fully the equivalency of the Che- 
mung, Marshall, Ohio, Eockford, Burlington, and Chanteau strata." " The 
evidences," he continues, " that these localities are all of Carboniferous 
age, are — first, the fact that of the 135 species now known from the yellow 
sandstones of Burlington, no less than 40 ascend into the base of the Bur- 
lington limestone, while 2 rise to the upper portion of it, and 1 recurs in 
the coal-measures ; second, the fact that of the known species of this 
horizon at least 9 occur in the coal-measures or upper part of the Carbo- 
