BihUograpMcal Notice. 517 



Fig. 1 b. Surface, showing arched lips (folds) at the apertures of the 

 autopores, enlarged about forty times. 



Fig. 1 c. Transverse section, showing one of the " maculge," with the 

 autopores ranged around it ; enlarged about twenty times. 



Fig. \ d. A. portion of the same section, enlarged about forty times. 



Fig. 1 e. Longitudinal section, enlarged about twenty times. 



Fig. 2. Fistulipora 2'orrubicB, De Vern. & Haime. Transverse section, 

 enlarged about twenty times. 



Fig. 2 a. Portion of another section, to show folds in the autopores, en- 

 larged about forty times. 



Fig. 2 b. Longitudinal section, enlarged about forty times. 



Plate XVII. 



Fig. I. Fistulipora utriculus, ^Q-m. Surface partially weathered, showing 



autopores and mesopores, enlarged about forty times. 

 Fig. 1 a. Surface of the same, viewed in profile, showing prominence of 



the arched lips of the autopores. Similarly enlargt-d. 

 Fig. 2. Fistulipora Goldfussi, Mich. Corallum of the natural size. 

 Fig. 2 a. Transverse section, enlarged about twenty times. 

 Fig. 2 b. Longitudinal section, enlarged to the same extent. 

 Fig. 3. Fustulijwra dobunica, Nich. & Foord. View of the corallum of 



the natural size. 

 Fig. 3 a. Transverse section, enlarged about twenty times. 

 Fig. 3 b. Longitudinal section, similarly enlarged. 

 Fig. 4. Fistulipora eriensis, Rom. Transverse section, enlarged about 



twenty times. 

 Fig. 4 a. Longitudinal section, similarly enlarged. 



Plate XVIII. 

 Fig. 1. Fistulipora trifoliata, Schliit. View of the corallum of the natural 



size. 

 Fig. 1 a. Transverse section of one of the " maculte,'' enlarged about 



twenty times. 

 Fig. 1 b. Transverse section, enlarged about forty times. 

 Fig. I c. Longitudinal section, enlarged about twenty times. 

 Fig. 2. Fistulipora cornavica, Nich. & Foord. View of the corallum, 



growing on a Brachiopod shell. Nat. size. 

 Fig. 2 a. Transvei'se section, enlarged about twenty times. 

 Fig. 2 b. One of the autopores, enlarged about forty times. 

 Fig. 2 c. Longitudinal section, enlarged about twenty times. 



BIBLIOGRAPHICAL NOTICE. 



Contributions to the Knowledge of the Older Mesozoic Flora of 

 Virginia. By William jVlOKEIs Fontaine. Monograjihs of the 

 United States Geological Survey. Vol. VI. Pp. 144, with 54 

 plates. Washington : 1883. 



The present volume contains a very full account of the older Meso- 

 zoic flora of Virginia. The author introduces the subject by a short 

 geological sketch, of the area from which, the fossil plants were 

 collected, in which is pointed out that the Mesozoic strata of Vir- 

 ginia are divisible into two well-marked groups, an older and a 

 younger, both of which are characterized by plants of a totally 

 different aspect. It is only those from the older Mesozoic group, 

 however, with which the present monograph deals. 



