224 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 10 



When first deposited, the egg was a deep cherry-red, becoming dark 

 brown in about fifteen minutes. Nearly an hour was required for the 

 complete assumption of the black color. At the time of writing, the 

 smaller cluster contains about one hundred eggs, while the larger one 

 exceeds two hundred in number, the process of oviposition not being 

 completed as yet. 



Scientific Notes 



Notes on Several Insects not Heretofore Recorded from New Jersey. Janus 

 abbreviatus Say^ (Hymen.). This saw-fly appears to be established at the follow- 

 ing localities in New Jersey; Bomid Brook, Rutherford, Irvington, Elizabeth, South 

 Orange and Springfield, occurring as a rule in nurseries. The larvjE live in the twigs 

 of poplar and willow trees and are generally found in those which spring from the 

 base of the tree. Occasionally twigs higher up are infested. After the middle of 

 summer, the infestation is readily noticed by the dying back and turning black of 

 the tips of the shoots. At the present time, in New Jersey at least, it is more of a 

 nursery than a shade tree pest. 



Diprion simile Hartig (Hymen.). This species, known as the European pine saw- 

 fly was found for the first time in New Jersey during the summer of 1916 at the fol- 

 lowing localities: Elizabeth, Rutherford, South Orange, and like the preceding 

 species, its activities were confined entirely to pine trees in nurseries. It has evi- 

 dently been present in New Jersey for the past several years and during the past 

 season was rather heavily parasitized inasmuch as from two hundred cocoons, only 

 eighteen adults were secured, the remainder bringing forth hundreds of specimens of 

 Monodontomerus dentipes Boh.^ In the June, 1915, number of the Journal of Eco- 

 nomic Entomology, p. 379, there appeared a paper on this saw-fly by Dr. W. E. 

 Britton. 



Phytomyza aquilegiae Hardy (Dip.). In some way or another, this species known 

 commonly as the columbine leaf-miner, was omitted from Smith's List of the Insects 

 of New Jersey. As a matter of fact, it is a local pest of columbine and has been noted 

 at Springfield, Rutherford, Riverton and Elizabeth and undoubtedly has a much 

 wider distribution. Mr. E. N. Cory in his paper on this species (Jour. Econ. Ent., 

 vol. 29, No. 4, pp. 419-424) also mentions New Brunswick, which is an additional 

 locality. The destruction of the infested leaves early in the season where practiced 

 in New Jersey has been followed as a rule by a considerable lessening of the injury 

 later in the season. 



Blaberus discoidalis Serv. (Orthop.). This large attractive roach has been found 

 several times in greenhouses in New Jersey, having been introduced with orchids 

 imported from South America. According to Mr. Morgan Hebard, who identified 

 this species, it is one of the commonest members of the genus through the West 

 Indies, northeastern South America and as far northward on the mainland as 

 Panama. Mr. Hebard treats of this species in his paper "Critical Notes on Cer- 

 tain Species of the Genus Blaberus," published in Entomological News, vol. 27, No. 7, 

 pp. 289-296. 



Harry B. Weiss, New Brunswick, N . J. 



1 Identified by S. A. Rowher. 

 ■ ^ Identity obtained from Mr. Crawford through Dr. W. E. Britton. 



