1892.] Geology and Paleontology. :■,:;.; 



there the skeleton of some unfortunate alligator that has been killed 



by some marksman or bv soiik' stray hunter." Sdrntitir Amrricnu 



April 2, 1892. 



Xanthidia.— Mr. E. W. Wetherell reports the occur* 



thidia in the London clays. He has succeeded in isolating th.se min- 

 ute fossils, and finds that for the most part they follow m 

 distinguishable, although there are manv minor vara l',. - 

 them. These organisms are often found joined together in pair.-, or 

 with five or six individuals massed together. 



Their characters are as follows : Shape, lenticular ; some specimens 

 far flatter than others, perhaps owing to pressure; spines around the 

 edge and springing obliquely from the flattened sides: or, around the 

 edge only. The length, thickness and number of spines gives rise to 

 the two types. The diameter is about A nun. When viewed by trans- 

 mitted light the body portion is of a distinct green color, marked with 

 black spots. Glycerin shows the whole form better than anv other 

 medium.— Geol. Mag., Jan., 1892. 



Geological News. Paleozoic. — A microsaurian is reported from 

 the Lancashire Coal field. The fossil comprises the head, abdominal re- 

 gion and base of the tail ofa small animal ■■< scupying the whole of an elon- 

 gated split nodule 0.08 m. in length. It has been assigned to Hylono- 

 mus by A. Smith Woodward under the name H. wildii. Among distinc- 

 tive specific characters may be enumerated the form and proportions 



of the mandible and dermal armor. (Geol. Mag., May, 1891.) 



Mr. Malcom Laurie has described some Eurypterid remains from the 

 Upper Silurian deposits of the Pentland Hills, Eng., one of which has 

 been made the type of a new genus, Drepanopterus. This form is 

 characterized by the great breadth of the carapace, aud by the shape 

 of the single limb which has been preserved. The limb is long and 

 narrow, and ends in a slightly expanded sickle-shaped segment. The 

 genus seems to be intermediate between Ewjptertu and S 



(Proceeds. Koy. Acad., Dec, 1891.) A new Clymenia has been 



discovered in the Naples Beds of Western New York. It is described 

 and figured by J. M. Clarke under the name C. neapolitana! The 

 genus Clymenia has been considered a horizon-marker of the upper- 

 most Devonian, and its discovery in a lower Upper Devonian in com- 

 pany with Goniatites intumescens and representatives of the 

 of European Upper Devonian fauna sugge-t- t lie idea that the fauna of 

 the Naples Beds may be a condensed time-equivalent of a - 

 differentiated in the transatlantic Upper Devonian succession. Am. 

 Jour. Science, Jan., 1892.) 



