108 ENTOMOLOGICAL SOCIETY 



appeared in spite of new and fresh food. The last stage of 

 development of the nymph was examined at another time and 

 is described below : 



Description of last stage nymph. Body elongate-elliptical, yellowish- 

 white, pellucid, some brownish spots on inner side of the wing pads 

 basally and at apex; abdominal segments on the middle and all the 

 appendages or processes toward the tip brownish. Pronotum trans- 

 verse, lateral margins rounded ; hood, median carina, and triangular 

 posterior part of pronotum already indicated. Antennae as long as the 

 whole body, finely pilose, yellowish, tip of the two terminal joints 

 brownish. Wing pads reaching the third abdominal segment. Head 

 with five long processes, of which two at base of head are most 

 prominent and bent forward ; two smaller ones on a little eleva- 

 tion of median carina near together; very large processes on each 

 lateral margin of pronotum; two on the mesonotum and a single 

 one at middle of the first, third, fourth, and sixth dorsal segments of 

 abdomen ; another on each wing pad ; the processes on the lateral mar- 

 gins of abdomen are slightly smaller. These appendages or processes 

 are peculiarly shaped, cylindrical, narrowing toward the apex, the edge 

 of tip armed with two or three small sharp teeth ; there are also some 

 pores and short bristles on the surface of these processes visible by 

 high power magnification. Length, 2 mm. 



In naming this species I gladly adopt the manuscript name 

 of Professor Uhler. 



EXPLANATION OF PLATE iV. a, Acysta perseos, adult; b, nymph 

 of same; c, lateral abdominal process of same; d, Leptobyrsa cxplanata, 

 adult; e, nymph of same; /, lateral abdominal process of same. 



MAY 7, 1908. 



The 222d regular meeting was held at the Saengerbund 

 Hall, 314 C Street, N. W. President Hopkins presided, and 

 there were present Messrs. Barber, Burke, Davis, Dyar, Ely, 

 Gahan, Heidemann, Hopkins, Kraus, Marsh, Patten, Piper, 

 Quaintance, Sanders, Schwarz, Ulke, Van Horn, and Webb, 

 members, and Messrs. Elsey and Bailey Willis, visitors. 



Mr. Sanders exhibited mounted specimens of the chalcidid 

 species Syntomaspis druparum Boh. and Megastigmus collaris 

 Boh. The larvae of Syntomaspis was found in November, 

 1907, in the seeds of a hybrid (Pear X Cratccgus) introduced 

 from Christiania, Norway, by the Bureau of Plant Industry. 

 The adults were reared May 2, 1908. The species was de- 



