£»7S SCIENTIFIC RECORD FOR 1884. 



posed in i^lace of the generic use of the name Erinnys anticipated. Mr« 

 G. F. Matthew having proposed the name Bailiella., Conocoryphe {Bai- 

 liella) bailey i, this name will be substituted for Salteria, in referring to 

 the St. John species. Mr. Walcott does not accept the genus Conocc- 

 phaUtes, and refers its different species to some of Ptychoparia and one 

 of ConOiOryx)he. 



The second part is on the "fauna of the Braintree argillites." Mr. 

 Walcott gives excellent figures of Paradoxides harlani and doubts its 

 specific difference from P. hennetti. He describes two new species from 

 this iovmaiio-a^HyoUthes shaleri aud Ptychoparia rogersi, and refers Whit- 

 field's Arionellus quadrangularis to the genus Agraulos. 



Part three contains the description of a new genus and species of 

 Pkyllopoda from the middle Cambrian slates of Parker's farm, Georgia, 

 Yt., Protocaries n. g. type P. marshi. The illustrations are all wood- 

 cuts, and are very good of their kind. 



Walcott, C. D. —Appendages of the Trilobite. (Science, Ko. 57, March 



7, vol. Ill, pp. 279-281. Cambridge, 1884.) 



An interesting paper on the appendages of the Asaphiis megistos, de- 

 scribed by Prof. John Mickleborough. Mr. Walcott notes the verifica- 

 tion of the hypothesis that the legs were jointed beneath the pygidium 

 as the only addition to our knowledge furnished by this specimen. An 

 excellent ligure accompanies the paper ; there are also figures of Caly- 

 mene senaria, copied from those in Bull. Mus. Comp. Zool., Vol. viii, p. 

 204, 1881. 



Ward, L. F. — On Mesozoic Dicotyledons. (Amer. Journ. Sci. and Arts, 



April, vol. XXVII, p. 293. New Haven, 1884.) 



Mr. Ward reviews briefly the present condition of our knowledge of 

 the subject, and gives a history of its progress, and some generaliza- 

 tions and attempts at comparisons with European beds. 



Ward, L. F. — Caulhiites and Zamiostrobus (Science, No. C5, May 2, vol. 

 Ill, pp. 532,533. Cambridge, 1884.) An answer to J. F. James's 

 " Two species of Tertiary Plants." 



White, C. A. — A Keview of the Fossil Ostreidae of North America, aud 

 a Comparison of the Fossil with the Living Forms. With appendices 

 by Prof. Angelo Heilprin and Mr. John A. Ryder. (Eep. of the Sec. 

 of the Interior for 1883, vol. iii. Rep. of the director of the U. S. 

 Geol. Surv., pp. 273-430, pis. xxxiv to Ixxxii. Washington, 1883.) 

 [Appeared 1884.] 



A valuable condensation of the known North American oysters, with 

 copious illustrations. The plan is the same as that followed in the Re- 

 view of the Non-marine Fossil Mollusca published the year previous. 



White, C. A. — On a small Collection of IMesozoic Fossils collected in 

 Alaska by Mr. W. H. Ball, of the United States Coast Survey. (On 

 Mesozoic Fossils. Bull. U. S. Geol. Surv., vol, i, No. 4, p^). 98-103, 

 pi. vi. Washington, 1884.) 



