Vol. XXV] ENTOMOLOGICAL NEWS. 279 



emended form Trypanea, which I do not think necessary. This 

 name unfortunately must take the place of Urellia Desv. (1830). 

 This being the oldest genus in the family has influenced Prof. 

 Bezzi to change the family name to agree. Of course he 

 recognizes Meigen's 1800 genera in which case he is within 

 his rights. I do not recognize the 1800 names and so prefer to 

 retain Trypeta Meig. instead of Euribia Meig. The name of 

 a family is the one first applied to it provided the genus from 

 which it is named is included. The retention of Trypeta will 

 necessitate the changing of Bezzi's tribe Ceratitininae to Trype- 

 tininae while his subfamily will be Trupaneinae with Tru- 

 paneininae as its typical tribe. 



Some Facts About the Egg Nest of Paratenodera 



sinensis (Orth.). 

 By HARRY B. WEISS, New Brunswick, New Jersey. 



The egg nest of this striking and beneficial insect is peculiar 

 in that it consists of a central, somewhat horny, core, contain- 

 ing the eggs, surrounded by a porous rind, which undoubtedly 

 serves to protect the eggs from moisture and sudden changes 

 in temperature. 



Thermometric tests of the conductivity of this rind were 

 made with quite a few nests, and the following tables, show- 

 ing the temperature changes of three nests, indicate what hap- 

 pened generally. In each case a hole was drilled in the nest 

 and the bulb of a thermometer inserted so that it occupied 

 the same position as the core. The nests were then placed in 

 an oven, the temperature of which was 160 deg. F. The nest 

 temperature at the start was 64 deg. F., and a thermometer 

 having no nest attached and reading 64 deg. F. at the start 

 registered the oven temperature 160 deg. F. in two minutes. 



. EGG NEST A. 



Temperature at start ' 64 deg. F. 



Temperature at end of 5 minutes 102 deg. F. 



Temperature at end of 10 minutes 148 deg. F. 



Temperature at end of 12 minutes 160 deg. F. 



Rise in 12 min., 96 deg. F. 



