738 SCIENTIFIC RECORD FOR 18«5. 



Matthew, G. F. — (On the Probable Occurrence of the Great Welsh 

 Faradoxides {P. davidis) in America. Nature, vol. xxxii, p. 358. 

 1885. London and ISTew York. 



Notice and abstract of Mr. Matthew's paper in the Amer. Jour. Sci. 



Matthew, G. F. — Note on the Genus Stenotheca. Geol. Mag., new 

 series. Decade III, vol. ii, pp. 425, 426. September, 1885. London. 



Eemarks on species from the Saint John group of Nova Scotia. The 

 author mentions five species as occurring in the Saint John group, and 

 makes some remarks on their af&nities and habitat. 



Matthew, G. F. —Notice of a New Genus of Pteropods from the Saint 

 John Gi'oup (Cambrian). Amer. Jour. Sci., 3d ser., vol. xxx, pp. 293, 

 294, figs. 1-3 on p. 294. October, 1885. New Haven. 



Describes the new genus Diplotheca acadica Hartt, sp. var. crassa, D. 

 Hyattiana, and D. Hyattiana var. caudata. 



Matthew, G. F. — Illustrations of the Pauna of the Saint John Group 

 continued. On the Conocoryphea, with further remarks on Paradox- 

 ides. Trans. Roy. Soc. Canada, vol. ii, section iv, 1884, pp. 99-124, 

 pi. i. (1885. Montreal.) 



The author gives further descrii:)tions of Paradoxides acadicus, fig. i, 

 of the young of the species ; also describes Paradoxides lameUatus Hartt, 

 figs. 3 and 4. On fig. 5 the author reproduces a pygidium incorrectly 

 figured in connection with his former paper. {See fig. 15, pi. x, vol. i. 

 Trans. Boy. Soc. of Canada.) The author suggests that the name Para- 

 doxides Micmac be applied to the species fig. 8, pi. x, vol. i. Trans. Roy. 

 Soc. of Canada. This is probably the specimen figured in "Acadian 

 Geology." The author divides Conocoryphea into two groups : Ctenoce- 

 phalus Oorda and Conocoryphea Corda ; gives a detailed description of 

 Ctenocephalus M atthewiHnr tt sp. (figs. 6-21, pp. 103-111) and its devel- 

 opment and growth. The same thing is done for Conocoryphe Baileyi 

 Hartt sp. (figs. 22-27, pp. 111-114), and Conocoryphe elegans Hartt sp. 

 (figs. 28-34, pp. 115-119). The author also describes the new species 

 Conocoryphe Walcotti (figs. 36 and 36&, pp. 119,120). Makes general 

 comparisons and conclusions on pp. 120-123. 



[Milne, Edwards H.].— Structure des Trilobites. Ann. des Sci. Nat., 

 Sixi^me S6r., vol. xii. Art. 3, p. 33, pis. i-iii. 1881. Paris. 

 A review of C. D. Walcott's Organization of Trilobites. (Not seen.) 



Morris, Charles. — The Primary Conditions of Fossilization. Proc. 

 Acad. Nat., Sci. Philad., vol. — , pp. 97-101. J uly, 1885. Philadelphia. 



An interesting paper containing some slight discrepancies and with 

 some of the premises of which many people will disagree. The author 

 reaches the conclusion that "fossilization of animal forms was not pos- 

 sible until, after a long period of evolution, the power of secreting hard 



