PROOEEDTT^GS. 



Ninetieth Meeting, February 30, i8S6. 



The President in the chair, and thirty-seven persons present. 



Dr. D. E. Sahnon and Dr. Theoliald Smith presented a pa- 

 per, which was read by the latter, entitled, On a New Method 

 OF Producing Immunity From Coxtagious Diseases. 



A paper by Prof. C. V. Riley, describing A Carnivorous 

 Butterfly Larva, Fenesica targjuinius,! was read by Mr. 

 J. B. Smith. Specimens of both the larva and imago were ex- 

 hibited. 



Prof. L. F. Ward spoke upon The Plane Tree and its An- 

 cestors,! and exhibited specimens and figures of both the recent 

 and fossil species. 



Dr. C. Hart Merriam described A New Species of Aplodox- 

 TiA FROM California, § and exhibited skms and skulls of the 

 only two species of the genus at jDresent known. 



NiNETY-FiRST Meeting, March 6, i8S6. 



The President in the chair, and thirty-six persons present. 



Dr. Geoi-ge Vasey spoke upon New and Recent Species of 

 North American Grasses. 



Mr. Charles Hallock read a paper entitled Hyper-Instinct 

 IN Animals. 



* Until March 19, 18S7, the meetings wei-e held either in the Lecture 

 Room or in the office of the National Museum, and subsequentlv in the 

 Assembly Hall of the Cosmos Club, on Lafayette Square. 



tiSS6. Amer. Nat., June; and Proc. Ent. Soc , Washington, i. No. 2, 



P- 37- 



J The Paleontological History of the Genus Platanus. <Proc. U. S. 

 Nat. Mus., xi. (In cource of publication.) 



§ 1886. Merriam, C. Hart. Description of a New Species of Aplo- 

 dontia from Cnlifornia. < Ann. N. Y. Acad. Sci., iii. No. 10, pp. 312-328, 

 plates 19, 20, and two tables. 



VII 



