H4 ENTOMOLOGICAL NEWS. [April, '03 



miles apart but always inhabiting the same kind of moss- 

 covered rocks and ledges. 



It will be seen by this that the City of Boston separates the 

 habitat of this species into two groups of localities ; the first, 

 or parent locality, being the town of Milton, from which the 

 species has gradually spread until now it is found in Brookline, 

 West Roxbury and Dorchester (these towns forming part of 

 the City of Boston), and even to Gloucester on the south, and 

 the second locality to the north, where they were first found 

 in the hills near Maiden and from which point they have pene- 

 trated in to the towns of Melrose and Wyoming in one direc- 

 tion, and in Medford in another. 



I found my first specimens of Cidndela hentzii in Maiden, 

 July 5, 1883. They were very scarce that year, and it was 

 not until some time after this that they began to be found in 

 other nearby districts. 



Perhaps the work on the great Metropolitan Park system has 

 had something to do with this, as many roadways have been 

 built, and much blasting, filling in and other work done in 

 order to bring this land into suitable condition. 



While the habitat of this species has undergone many changes, 

 so also has there been changes in the time of its apearance, speci- 

 mens being found often in June. I have found them as early as 

 June i yth one year when the season was very early and the 

 weather very warm. They are found in numbers in July and 

 August and often up to the middle of September, though some 

 years quite rare after about August 2oth. 



At one time I thought there were two broods of C. hentzii, 

 some seasons they become quite numerous in July, but after a 

 few days they suddenly disappear to return in August. I now 

 think this is due to some climatic or other natural cause, as 

 this occurence has not been observed for several years. 



It is difficult at best to secure Cidndela larvae and with the 

 hentzii this difficulty becomes almost an impossibility owing 

 to the nature of the material they burrow in. 



I failed repeatedly in my endeavors to secure larvae in the 

 usual way, the burrows examined were either situated in large 

 crevices on the face of the ledges, or on the ground between 



