Annual Reports 83 



remarked upon the importance that had already been attached to these 

 organs in taxonomic work, instancing the papers by John B. Smith on 

 Lachnosterna and by the German author, Verhoeff, on Coccinellidae and 

 other families of Coleoptera, besides the use to which they have been put 

 in other orders. The investigation of the genitalia of Lachnosterna has 

 been carried on very thoroughly by Mr. Glasgow, his examinations in- 

 cluding not only that of large numbers of specimens in the laboratory in 

 Illinois, but also that of the type specimens in the Horn, Smith and 

 other collections, wherever they were accessible to him. The result of the 

 examination and comparison of the genitalia of so many specimens may 

 not improbably be the demonstration of a certain degree of variability in 

 the development of these organs, analogous to that known in other struc- 

 tures and in maculation, so that while differences in type of structure of 

 genitalia may be indicative of specific difference, more or less minute 

 differences in degree of development may prove to be of no great im- 

 portance. 



Mr. Leng also showed specimens of Serica similarly prepared by Mr. 

 Glasgow to show the genitalia and explained the process by which the 

 preparation was effected. He stated that the importance of these organs 

 in classifying Scarabaridae of generally similar appearance was indis- 

 putable and while it was possible by the Glasgow method to readily pre- 

 pare dried specimens for examination, and without damage to the speci- 

 mens, yet it would be of great advantage to have the genitalia extruded 

 by abdominal pressure while the insect was soft, and he urged collectors 

 to so prepare such specimens in future. 



Mr. William T. Davis exhibited a paw paw collected by him in the 

 vicinity of Washington, D. C, and commented on the toothsomeness of 

 this fruit in season. He also displaj^ed a living specimen of mantis, 

 Stagmomantis Carolina L., from near the same locality, and an alcoholic 

 specimen of Spelerpes longicauda Green from a decayed log on a dry 

 hillside near Cabin John Run, Md., collected by himself and Mr. Ernest 

 Shoemaker on September 19, 191 1. Hyla evittata Miller was found on a 

 bush in an old quarry on the Virginia side of the Potomac and one mile 

 above the Aqueduct Bridge. This and one other collected in June, 1910, 

 just above the Aqueduct Bridge on the Virginia shore, are probably, so 

 far, the furthest up the river records for the species. Three specimens 

 of the six-lined lizard, Cnemidophorus sexUneatus L., were seen near 

 Beltsville, Prince George Co., Md., September 26, 191 1, while looking for 

 insects with Mr. Clarence Shoemaker and Mr. Frederick Knab. They 

 were on a warm sandy hillside on the edge of a wood where grew many 

 black jack oaks. This locality is between five and six miles northeast of 

 the District line. These records may be of interest in connection with the 

 " List of Batrachians and Reptiles of the District of Columbia and 

 Vicinity," by W. P. Hay, and printed in the Proceedings of the Bio- 

 logical Society of Washington for June, 20, 191 1. 



