N. A. INVKRTKRRATK PAT./EONTOLOGY. 741 



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

 the Chemuug Kocks. Ann. X. Y. Acad. iSci., vol. iii, June, 1885, No. 

 7, pp. 217-220, pi. xviii. New York. 



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

 and S. RandaUi, from the Chemung group in Northern Pennsylvania 

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

 ties of the genus. 



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

 stones of the Chemung Groui^ of New York and Pennsylvania. 

 Trans. JV. Y. Acad. Set., vol. in, 1883-'84, pp. 33, 34. • 1885. New York. 

 The new genus Spiraxis and species 8. major and S. RandalU fully 

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

 scriptions were read December 3, 1883. 



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

 Eocks of Northern Pennsylvania and Southern New York.) Pop. Sci. 

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

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



of the New Yorh Academy of Sciences. 



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

 Structure, and Geological Distribution of Solenoptera coii/ipacta, 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 Eominger, from the Hamilton group 

 at Arkona, Ontario, Canada, and F. et iensis Eominger, 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, Eupropis 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, Dipcltis, which he places among the 

 Gyclidce for the present; the specific names are Belimirus laccei, Cyclus 

 americanus, Dipeltis diplodiscus. Fuller descriptions, with illustrations 

 and measurements, will be published subsequently. 



