184 PALEOBOTANY [Bot. Absts., Vol. IV , 



1211. Knowlton, F. II. A catalogue of the mesozoic and cenozoic plants of North America. 

 Bull. U. S. Geol. Surv. 696. 815 p (1919.) 1920.— Contains a bibliography, an alphabetical 

 list of species under their appropriate genera, also alphabetically arranged, with citations 

 of generic types, citations and occurrences for species, list of genera arranged botanically 

 and lists of floras of different geological formations arranged chronologically. An invaluable 

 reference work brought up to 1919. — E. W. Berry. 



1212. Kryshtofovich, A. On the flower of Williamsonia sp., found near Vladivostok, 

 and some other fossil plants from the maritime province of Asiatic Russia. Jour. Geol. Soc. 

 Tokyo 26: 1-5. 2 fig. Nov., 1919. — Records the following Jurassic plants from Vtoraya 

 Riechka, 9 km. north of Vladivostok: Onychiopsis elongata Yok., Cladophlebis denticulata 

 Font., Laccopteris Dunkeri Schenk, Sagenopteris of Mantellii Schenk, Nilssonia orientalis 

 Heer, Dioonites cf Ketoi Yok., Williamsonia sp., Podozamites lanceolatus L. & H., Elatocladus 

 subzamioides Moller and Brachyphhllum sp. — A second Jurassic locality at Brashnikova Bay 

 near Okeanskaya, about 20 km. north of Vladivostok furnished Onychiopsis elongata Yok., 

 Klukia exilis Racib. and Equisetites cf. Yokoyami Sew. — A third locality on the Japan Sea 

 south of Cape Bielkin is of Tertiary age and has furnished a five petalled flower, an Acer sam- 

 ara and leaves of Fagus, Juglans, Alnus and Grewia. — E. W. Berry. 



1213. Laurent, L. Addition a la flore fossile des schistes de Menat (Puy-de-Dome). 

 [Addition to the fossil flora of the Menat shale (Puy-de-Dome).] Ann. Mus. Hist. Nat. Mar- 

 seille 17: 3-8. 1 pi. 1919. — Describes Calamopsis pomeli sp. nov. from the Oligocene bitumi- 

 nous shales of Menat in central France. — E. W. Berry. 



1214. Laurent, L. Les Liquidambars. Essai de filiation des formes actuelles et fossiles 

 du genre Liquidambar. Synthae du genre. [The liquidambars. Relationships of recent and 

 fossil forms of the genus Liquidambar. A synthetic treatment of the genus.] Ann. Mus. Hist. 

 Nat. Marseille. 17: 9-27. PI. 2, 3. 1919. — Discusses the characters and the peculiar distri- 

 bution of the recent species, critically reviews the various fossil species which have been de- 

 scribed and concludes that the genus originated in the Arctic region from which it spread south- 

 ward in all directions, that L. europaeum Heer is the single specific type throughout the Ter- 

 tiary, the described forms being merely varieties of this form which gave origin to the single 

 existing specific type, namely L. slyraciflua L. of which L. orientalis Mill, and L. forrnosana 

 Hance and other Asiatic mutants are merely geographic varieties or post glacial isolated rem- 

 nants of a previously Holarctic distribution. — E. W. Berry. 



1215. Marty, P. Un fruit fossile de Lezoux (Puy-de-Dome). [A fruit fossil from Puy- 

 de-Dome.] Rev. d'Auvergne ann 1919: 1-17. 4- fig- — Records well preserved fruits from the 

 middle Stampian of Lezoux which are considered identical with Cucumites variabilis described 

 by Bowerbank from the much earlier Ypresian of the London Basin. Extended comparisons 

 are made with various species that have been referred to the genus Apeibopsis Heer. — E. 

 II'. Berry. 



1216. Moodie, R. L. Thread moulds and bacteria in the Devonian. Science, n.s. 51: 14- 

 15. Jan. 2, 1920. — An examination of the enlarged and distorted lacunae in the bony cara- 

 paces of the fish-like forms Bothriolepis and Cocosteus from the Devonian show the unmistak- 

 able activity and probable presence of thread moulds (Mycelites) and bacteria (Micrococcus). 

 Apriori reasons were convicing for regarding these lowly organisms as present in great abun- 

 dance in the older rocks but none have been recorded in the long interval between the pre- 

 Cambrian occurrences described by Walcott and the Carboniferous forms described by Ren- 

 ault, so that the present contribution helps to bridge this gap in the record. — E. W. Berry. 



1217. Nathorst, A. G. [Rev. of: Antevs, E. Die liasslsche flora des Horsandsteins. 

 (Liassic flora of Hor sandstone.) K. Sv. Vet. Akad. Handl. 59 . 8 1919.] Geol. Foren. For- 

 handl. 4: 524-527. 1919. 



