572 SCIENTIFIC RECORD FOR 1884. 



pacta, Lepidostrobus butleri, L. latus, Lepidophyllum stantoni, Whittlescyo 

 microphylla, Cordaianthus scdber, C ebracteatus. 



Lesquereux, Leo. — Principles of Paleozoic Botany. (Indiana depart- 

 ment of Geology and Natural History, 13th Ann. Rep., Part ii, 

 Palaeontology, pp. 7-106, pis. i-xxi, John Collett, State geologist, 1883. 

 Indianapolis, 1884.) 



In the descriptive part of this work Mr. Lesquereux gives descrip- 

 tions of the coal flora, a part of which are modified or borrowed from 

 his U. S. Coal Flora, Report P, of the 2d Geol. Surv. Penna. The plates 

 and figures are very good of their kind, and the whole work answers 

 very well its purpose of an elementary treatise on the subject. The 

 Geological Survey of Indiana has done excellent work in this direction, 

 and it is to be hoped that its labors will not be permanently discon- 

 tinued. 



Lesquereux, Leo. — The Carboniferous Flora of Rhode Island. ( Amer- 

 Naturalist, No. 9, September, vol. xviii, pp. 921-923. Philadelphia, 



1884.) 



The author gives a list of eighty-eight species, of which fifty-six are 

 ferns, and describes two new species, Sphenopteris fuciformis and Cal 

 lipteridium sp. n. ?, or variety of Alethopteris urophylla Brgt. 



Marcou, J. B. — A Review of the Progress of North American Inver- 

 tebrate Palaeontology for 1883. (Amer. Naturalist, April, vol. xv, 

 No. 4, pp. 385-392. Philadelphia, 1884.) 



Mathew, G. F. — The Primitive Conocoryphean. (Geol. Mag. 3d De- 

 cade, vol. I, pp. 471, 472, 1884. London, 1884.) 



Relates to the development of the species Gtenocephalus Mathewi and 

 other Conocorypheans of the Acadian fauna, and is considered under 

 the three heads, development of the Glabella, acquisition of sensory 

 organs, and the decoration of the test. 



Mathew, G. F.— The Geological Age of the Acadian Fauna. (Geol. 

 Mag. '3d Decade, vol. i, pp. 470, 471. London, 1884.) 

 An attempt is made to show more accurately than has yet been done 

 the position of the Saint John Cambrian. It is shown that the genera 

 and species of the Acadian trilobites do not agree with those of the 

 Menevian in its more restricted sense. Mr. C. D. Walcott considers 

 the Saint John fauna as the oldest known Cambrian fauna. Both the 

 above papers are apparent^ abstracts of papers prepared for the meet- 

 ing of the British Association for the Advancement of Science, at Mon- 

 treal, in 1884. 



Matkew, G. F. — Illustrations of the Fauna of the Saint John Group, 

 No. 1. The Paradoxides. (Trans. Roy. Soc. Canada, section iv, 1882, 

 pp. 87-108, pi. ix, 1883. Montreal, 1884.) 

 Contains a brief history of the discovery and study of the Saint John 



group, an account of the conditions under which the fossils are found. 





