IQOl] ENTOMOLOGICAL NEWS. 29 



tioned putting Dermastid larvae in a tin box and subsequently 

 found cast-off skins and nothing else. Dr. Calvert spoke of the 

 egg of the common fruit fly with its two processes, one half as 

 long as the egg, and these processes seem to have small air cells. 



Henry Skinner, Secretary. 



A meeting of the Entomological Section of the Acadeni}- of 

 Natural Sciences of Philadelphia was held November 22nd. 

 Mr. Philip Laurent, Director, presiding. Mr. lyaurent donated 

 two specimens of the blown larva of Hemileuca maia. Dr. 

 Calvert recorded the occurrence of a single male dragonfly 

 Sympetriim {Diplax^ vicinum Hagen by the pond in the Bo- 

 tanical Garden of the University of Pennsylvania, November 

 2ist. This is believed to be the latest date yet recorded for 

 this species in this locality ;* in his Catalogue of the Philadel- 

 phia Odonata (1893), he had given October 26th as the latest, 

 stating, however, that the species would probably be found 

 still later, a prediction now verified. The occurrence of this 

 individual yesterday is the more interesting, because on No- 

 vember 1 6th the maximum and minimum temperatures for 

 Philadelphia are officially given as 42° F. (5.5° C), and 29° F. 

 (—1.7° C.) respectively; although on November 22ud the 

 maximum and minimum were 74° F. (23° C. ), and 65° F. 

 (18° C. ) respectively. The individual was captured, identified 

 and released ; it was quite lively when set free. Dr. Calvert 

 also called attention to a valuable paper by Dr. Justus Watson 

 Folsom on the mouth parts of Ayiurida maritifua, one of the 

 Collembola. The interesting features of the paper were men- 

 tioned. Dr. Skinner exhibited a variety of Pieris protodice and 

 made some remarks on the species in conjunction with Pieris 

 occidentalis. Mr. Reinick said he had spent ten days on the 

 Jersey coast at Atlantic City in October. While out fishing he 



* On November 23d, I found a female of this species in the same local- 

 ity, but have not been able to find any individuals later. The other dates 

 in November on which I saw this species at this pond were the 5th (ovi- 

 positing), 6th, 7th and loth.— P. P. Calvert, 



