N. A. INVERTKTiRATK PAT.^EONTOT.OGY. 741 



Newberry, J. S. — Description of some Peculiar Screw-like Fossils from 

 the Chemung Kocks. Ann. X. Y. Acad, ^ci., vol. iii, June, 1885, No. 

 7, pp. 217-220, 1)1. xviii. New York. 

 Describes the new genus Spiraxis and two species under it, ^. major 



and iS'. Randalli, from the Chemung group in Northern Pennsylvania 



and Southern New York. No definite opinion is given as to the aifini- 



ties of the genus. 



Newberry, J. S. — Some Peculiar Screw-like Casts from the Sand- 

 stones of the Chemung Group of New York and Pennsylvania. 

 Trans. N. Y. Acad. ScL, vol. in, 1883-'84, pp. 33, 34. 1885. New York. 

 The new genus Spiraxis and species S. major and S. Randalli fully 

 described and figured in the Annals, vol. tit, No. 7. The present de- 

 scriptions were read December 3, 1883. 



Newberry, J. S. — (Some Peculiar Screw-like Fossils from the (Jhemung 

 Rocks of Northern Pennsylvania and Southern New York.) Pop. Set. 

 Monthly, vol. xxvii, p. 719. September, 1885. New York. 

 A notice and abstract of Professor Newberry's article in Ihe Annals 



of the New Yorh Academy of Sciences. 



Nicholson, H. a., and Etheridge, Robert, Jr.— On the Synonymy, 

 Structure, and Geological Distribution, of Solenoptera co mpacta, Bill- 

 ings sp. Geol.Mag., new series. Decade III, vol. ii, pp. 529-535, pi. 

 xiii. December, 1885. London. 

 Describes and discusses the relations, occurrence, and varieties of the 



fossil mentioned, originally described from the Black River limestone 



under the Siromatopora compacta Billings. 



Nicholson, H. A,, and Foord, A. H. — On the Genus Fistulipora Mc- 

 Coy, with descriptions of several species. Annals and Magazine of 

 Natural History, 5th series, vol. xvi, pp. 49G-517, pis. xv^-xviii, figs. 

 1-6, pp. 497, 501, 507, 513, and 514. December, 1885. London. 

 Describes Fistulipora utriculus Rominger, from the Hamilton group 

 at Arkoua, Ontario, Canada, and F. eriensis Rominger, from the Ham- 

 ilton group at Canandaigua, Ontario County, New York. 



Packard, A. S. — Types* of Carboniferous Xiphosura new to North 

 America. Amer. Nat., vol. xix, pp. 291-294. March, 1885. Phila- 

 delphia. 



From the Carboniferous beds of Pittston, Pa., the author describes a 

 new species, Fupropis longispina. From Mazon Creek, Morris, 111., he 

 describes a new species of Belinurus and one of Cyclus, two genera new 

 to this continent, and a new genus, Dipeltis, which he places among the 

 Cyclidce for the present; the specific names are Belinurus laccei, Cyclus 

 americanus, Bipeltis diplodiscus. Fuller descriptions, with illustrations 

 and measurements, will be published subsequently. 



