56 PROCEEDINGS OF THE ACADEMY OF [1887, 



Fig. 10. Cylichna Dehayi Lea, sp. (var?) Jackson, Miss. 



Fig. 11. Tornatella volutata n. sp.; Vicksburg, Miss. 



Fig. 12. Bmgicula mississippiensis Conr.; Vicksburg, Miss. "Lower 



Vicksburgian." 

 Fig. 13. Dentalium subcompressum M.Y.; Yichshurg, Miss. 

 Fig. 13a. The same specimen, view of posterior end. 

 Fig. 14, 14a. Unicardiumt eocenense n. sp.; Red Bluff, Miss. 

 Fig. 15a, 15b. Tellina eburneopsis? Conr.; Jackson, Miss. 

 Fig. 16, 16a, 16a'. MiJcrola mississippiensis n. gen. et. n. sp.; Red 



Bluff, Miss. 



March 8. 

 Mr. Charles Morris in the chair. 

 Fifteen persons present. 



The deaths of Jos. Wilson M. D. and Bernard Persh, members^ 

 were announced. 



March 15. 

 Mr. John H. Redfield in the chair. 



Seventeen persons present. 



Papers under the following titles were presented for publication: 

 "A List of the Carices of Pennsylvania," By Thomas C, Porter. 

 "A Prodrome of a Memoir on Animal Locomotion." By 

 Harrison Allen M. D. 



On the First and Second Sets of Hair Germs Developed in the 

 Skin of Foetal Cats. Prof. Ryder remarked that in a foetal Kitten, 

 three and one-half inches in length, which he had examined, the 

 germs of certain hair follicles in the skin were more prominent than 

 the great majority of other hair germs. These larger hair germs were 

 especially obvious on the back and on the top of the head, where they 

 formed very slight superficial elevations of the epidermis. Along the 

 middle region of the back and head, these more prominent hair germs 

 formed linear series or rows, which seemed to correspond somewhat 

 in position to the arrangement of the stripes of color on the back of 

 the adults, as seen in the Ocelot and the black and grey-striped 

 variety of the domestic cat or grimalkin. On the sides and on the 

 limbs the linear arrangement of these larger hair germs disappeared 

 entirely, and they were distributed in an irregular manner, pretty 



