74 PEOCEEDINQS OF THE [Oct., 1869. 



September, and appears as an imago during the following May or June. The 

 larva feeds on the leaves of Ulmus Americanus. Massachusetts, Pennsylva- 

 nia, Michigan. {Clemens, Lepidoptera of N. A., Smithsonian Misc. CoUectians.) 

 The mature larva was found by me in the streets of Charleston, where there 

 were Elm trees, Sept. 23d. Length three and a half inches ; thickness nearly 

 three-quarters of an inch. Head finely granulated, having, in addition to the 

 two lateral stripes, two in front, approximate and nearly obsolete. There 

 were some slight brownish or livid blotches, hke bruises, on the flanks, front 

 and hind parts of this individual. Dorsal white line very distinctly denticulate 

 with erect teeth. Lateral whitish stripes obhque, the upper portions more 

 strongly denticulate, the lower granulate, seven in all, except two others, more 

 abbreviated, each side between them and the dorsal line in front, and leading 

 to the four horns. Horns, or tubercles, about one-tenth of an inch long, 

 strongl}^ granulated with white and a slight tinge of purple, pointing forwards ; 

 the front pair just above the middle pair of feet, the hind over the third or last 

 pair. Stigmatse oblong-oval, one-twentieth of an inch long, pale yellow, en- 

 closing two vertical, parallel black lines. Caudal horn one-third of an inch 

 long, but slightly recurved. 



OCTOBER 28th, 1869. 



The President in the Chair. 



Contributions to the Collection. 



OiJceticus coniferarum, from Cedar trees in Charleston. Collect- 

 ed in September and early in October, viz. : two males of the 

 imago ; cocoons or houses of each sex with their silk, some with 

 male chrysalis appendant and protruding but emptied, and some 

 with the female enclosed containing eggs. From Mr. W. Wragg 

 Smith. 



Prof. McCrady continued the reading of his paper on "The 

 Law of Development." * 



* S«e Note, page 58. 



