358 



THE GEOLOGIST. 



Chjmenia complanafa, C. erata, Trochoceras discoideum, Gyroceras trivolvis, G. 

 Matheri, G. undulatum, G. nereus, G. eryx, G. cy clops, G. nais, G. (Cyrioceras ?) 

 spinosum, Cyrtoceras eugenium, C. jason, C. rnorsum, C. metula, Aploceras (Cyrtoceras) 

 liratum, Gomphoceras beta, Orthoceras pelops, 0. tetricum, 0. foliatum, 0. baculum, 

 0. thoas, 0. hyas, 0. multicinctum, 0. prqfimdum, 0. subulatum, 0. constrictum, 0. 

 exile, 0. crotalum, 0. nuntium, O.perelegansf, 0. cegea. Crustacea — Calymene platys, 

 Dalhiania anchiops and var. armata, D. selenurus, D. cegeria, D. coronata, D. ma- 

 crops, P. adspectans, D. myrmecophorus, D. helena, D. calypso, D. pleione, 1). erina, 

 D. bifida, D. Boothii, Homalonotus Dekayi, Phacops bufo, P. rana, P. cristata, P. 

 bombifrons, P. cacapona, Proetus Conradi, P. angustifrons, P. hesione, P. clarus, P. 

 crassimarginatus, P. canaliculatus, P. Vernuelli, P. Haldemani, P. Rowi, P. margin- 

 alis, P. macrocephalus, P. auriculatus, P.occidens, P. longicaudatus, Lichas arrnatus, 

 L. grandis, Acidaspis sp., Beyrichia punctujifera, Leper ditia cayuga, L. spinulifera, 

 L. seneca. Annelida — Spirorbis angulatus. Crinoidea — Ediocrinus pyriformis^ 

 Cheirocrinus clarus, Ancyocrinus bulbosus, A. spinosus, Platycrinus eriensis, P. ebora- 

 ceus, Poteriocrinus nassa, P. nycteus, C. diffusus, P. nureus, P. verticilius, P. indetitus, 

 Cyathocriniis bulbosus, Forbesiocrinus lobatus, F. nuntius, Rhodocrinus s. g. Acantho- 

 crinus ? nodulosus, A. gracilis, Ph. spinosus, Trematocrinus spinigerus, Actinocrinus 

 vyssa, A. eucharis, A. precursor, A. cauliculus, A. calypso, A. pocilhim, A. s.g. Me- 

 gistocriyius depressus, M. Ontario, Cacabocrinus speciosus, C. Troosti, C. Urates, C. 

 liraius var. multilira, C. glyptus, and var. intermedins, C. lamellosus, Myrtillocrinus ? 

 americanus, Haplocrinus clio, Nucleocrinus elegans, N. lucina, and var. N. Verneuli, 

 Pentremites lada, P. calyce, P. Maia, P. Whitei, P. Lycorias, Fleutherocrinus Whit- 

 fieldi, Codaster pyrarnidatus . Brachiopoda — Zygospira (new genus founded on Atrypa 

 modesta), Meristella (new genus founded on Atrypa quadricosta), and A. mesacostalis, 

 Lingula tigea, L. palaformis, L. exilis, Piscina alleghania, Crania Hamiltonia ; C. 

 crenistriata, C. Leoni, Onihis lepidus, 0. cyclas, 0. penelope, 0. leucosia, 0. solitaria^ 

 Orthisina arctostriata, Or. a/ternala, Amboc&lia gregaria, Vitulina pustulosa, Spirifer 

 venustus, Trematospira gibbosa, Rhynchospira nobilis, Rh. lepida, Atrypa pseudomar- 

 ginalis, Merista Haskini, M. Barrisi, M. doris, M. multicosta, M. limit aris, 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 Report, 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 Catt skill Bed Sandstone group with the Chemung. " No 

 one who has recognized the carboniferous aspect of the fauna of the Mar- 

 shall group of Michigan, "with its equivalents in the West, can," lie says, 

 "feel any surprise at the announcement;" 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 IS T ew York, 3 ; besides an 

 almost universal identification establishing fully the equivalency of the Che- 

 mung, Marshall, Ohio, Eockford, Burlington, aud Chanteau strata." " The 

 evidences," he continues, " that these localities are all of Carboniferous 

 age, are — first, the fact that of the 135 species now know n 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 eoai-ineasures or upper part of the Carbo- 



