390 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 3 



eggs had apparently hatched, but, on more careful examination he 

 found that nearly every one had been attacked by a minute egg 

 parasite. In a beech grove on the southern slope of Mount Kearsarge 

 a count of 56 eggs of Heterocampa gave the following results: 



Number containing prepupse of parasite 35 



Number from which parasites had emerged 14 



Number from which caterpillars had hatched 2 



Number of eggs apparently dead 5 



This shows that the percentage of parasitism in this case equaled 

 87.5. Only one pupa was found in each parasitized egg, and no larvae 

 of the parasites were observed. This was probably due to the fact 

 that the observations were made a little too late in the season to secure 

 the early stages of the egg parasite. 



Mr. Smith brought specimens to the laboratory at Melrose High- 

 lands from which were reared a considerable number of egg parasites. 

 Examples have been submitted to Mr. C. T. Brues of the Bussey 

 Institution of Harvard University, who has identified them as very 

 similar, if not identical, with Telenomus graptce Howard. 



On July 24 Mr. Fiske, accompanied by Mr. Reginald Wooldridge, 

 of this laboratory, visited the region near White Horse CHff where 

 observations were made by Mr. Smith about two weeks previous. 

 No caterpillars or beetles were found and conditions were much the 

 same as those reported by Mr. Smith. Evidence of the work which 

 had been done the previous year by Calosoma was very easy to obtain, 

 and eggs of Heterocampa which had been parasitized by Telenomus 

 were present on the fohage. Out of eighty eggs examined by Mr. 

 Fiske, not one was found from which a parasite had not emerged, or 

 in which a dead larva or pupa of a parasite was not present. Not one 

 of the eggs had hatched and not a single caterpillar in any stage was 

 observed. 



Mr. Wooldridge continued his investigations at North Conway, 

 West Ossipee, and Crawford Notch, but found very few Heterocampa 

 larvae, and only an occasional beetle. At Mount Cramer, North 

 Conway, an examination of 29 eggs showed that 23 had contained 

 parasites, and on Mount Kearsarge 29 eggs out of 33 examined in one 

 locality, and 14 out of 16 examined in another had been destroyed by 

 Telenomus. 



In order to secure smy further data that might be obtained a final 

 examination of this territory was made by Mr. Burgess and Mr. C. W. 

 Collins. The region which was badly infested near White Horse Cliff 

 during the previous year was visited August 20. No evidence of the 

 feeding of Heterocampa could be noted, but many of the trees showed 



