June, 1909.] Proceedings of the Society. 91 



Dr. E. B. Southwick, chairman of the committee, read the nominations of offi- 

 cers as follows : 



President — G. W. Leng. 



Vice President — E. B. Southwick. 



Treasurer — W. T. Davis. 



Rec. and Corr. Sec. — H. G. Barber. 



Librarian — C. Schaeffer. 



Delegate to Academy of Sciences — C. H. Roberts. 



Executive Committee — G. P. Engelhardt, R. C. Osborn, G. W.J. Angell, C. 

 F. Groth, J. L. Zabriskie. 



Publication Committee —Wm. M. Wheeler, C. Schaeffer, E. P. Felt, F. G. 

 Love. 



Auditing Committee — E. D. Harris, E. B. Southwick, E. L. Dickerson. 



Field Committee — W. T. Davis, R. P. Dow. 



On motion of Mr. Pollard, duly seconded, the secretary was instructed to cast a 

 single ballot for the list of officers as read. 



Mr. Engelhardt exhibited a collection of bees which he had taken in the vicinity 

 of Olas de Moka, Dept. of Sosola, Guatemala, in September, 1908. Most of the 

 material had been collected at an altitude of about 300 feet. He spoke of the abun- 

 dance of bees swarming over the mass of tree blossoms or hanging vines many feet 

 above the ground, and thus difficult to capture. He found a number of species of 

 boring and carpenter bees in the woodwork of various outbuildings on the plantation. 

 Several colonies of stingless bees were also taken. 



Mr. Osborn, under the title of " A Review of Calvert's Odonata of the Biologia- 

 Centrali-Americana " spoke concerning the excellency of this great work. His 

 review is published in the body of the Journal. 



Dr. Charles L. Pollard read a paper entitled " Notes on Hybrids between Sa»ija 

 Cynthia and Callosamia protnetheay He first gave a summary of previous observa- 

 tions as follows : ( I ) Cross between female Cynthia and male Promethea. Miss 

 Caroline G. Soule obtained only two fertile eggs from this cross. The larvse were 

 typical Cynthia in practically every respect. Mr. Joutel, working with more abundant 

 material, succeeded in raising a number of larvae, which were typical Cynthia, and 

 constructed Cynthia-Y^e. cocoons. (2) Cross between female Proviethea and male 

 Cynthia. Both observers raised broods from the cross, and both obtained larvae par- 

 taking of the characters of the two parents. Miss Soule's brood, however, showed 

 wide individual variation, while Mr. Joutel' s varied only in respect to moults, 

 the individuals at any given stage being practically alike. Athough he had seen no 

 published description by Mr. Joutel of the moths resulting from his crosses, Mr. 

 Pollard had heard that interesting specimens were obtained by Mr. Joutel from female 

 Promethea and male Cynthia. Both of these observers secured their hybrids by natural 

 methods, but he had succeeded at no time in obtaining a natural cross. Crosses were 

 therefore made artificially, each moth being held by the wings until union was 

 effected. Of all these pairings, however, only one resulted in fertile eggs. This was 

 a cross between female Cynthiazjn^ male Promethea on June 22, 1908. The female 

 laid 326 eggs. Of these on July 2, I02 eggs hatched and no more thereafter. The 

 young larvte, as well as the mature larvse examined later in detail, showed no con- 

 stant point of difference from the typical Cynthia and this fact is in agreement with 



