178 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



This species is recorded 1 from Willow and Poplar and the fol- 

 lowing notes were obtained in my rearing it from the latter host. 



The material was collected by Mr. Harry B. Weiss at New 

 Brunswick, New Jersey, August 7, 1915. The larvae were boring 

 down the twigs and were considerably beyond the killed portion. 

 August 26, 1915 two adults Tetrastichus species emerged. Sep- 

 tember 7, 1915 some larvae in a fresh collection of infested twigs 

 had lined a portion of their burrow then occupied with a thin 

 glazed, transparent membrane. September 11, 1915 a single 

 adult of Eurytoma species emerged. May 31, 1916 a female of 

 Janus abbreviatus and a female of Microbracon species had emerged. 

 Janus continued to emerge until June 17, 1916. 



Janus integer Norton. 



Agreeing with the description of Janus abbreviatus but found boring in 

 the pith of Ribes species (currant). 



Material of this species was collected by Mr. Walter H. Snell 

 at West Falmouth, Massachusetts, August 23, 1916 in Ribes 

 species, sent to the Bureau of Entomology and placed in rearing. 

 By September 18, 1916 three as yet undetermined Chalicids had 

 emerged. Janus was at this time in the larval stage. On May 

 21, 1917 Janus began emerging and a single Proctotrypoid was 

 found in cage. 



Cephus cinctus Norton. 



A whitish cylindrical larva, 11 mm. long when nearly full grown and 

 somewhat enlarged dorsally and laterally in the thorax. 



Head. Dorsad ventrad length 1.5 mm., breadth 1.33 mm.; pale but 

 with mandibles, their articulations and labrum chitonized and darkened; 

 antennae 5 jointed. 



Thorax. Agreeing with description of that of Janus abbreviatus. 



Abdomen. Segments distinctly 3 annulate; the first annulation broad 

 and sometimes faintly partially, sub-divided; pleura prominent; venter 

 3 annulate; prolegs absent; 8th abdominal segment with barely discernible 

 white spots; 9th without the yellowish spots; dorsal anal lobe terminating 

 in a prong; anal plate, lateral area of dorsal anal lobe and ventral anal 

 lobe haired and white; ventral anal lobe with palpiform appendages at 

 posterior lateral extremities and accompanied by several hairs quite sepa- 

 rated from the rest of the lobe's ornamentation. 



Material received from Cereal and Forage Crops Insects, 

 Bureau of Entomology under Webster No. 8892 from Elymus 

 canadensis. 



1 Connecticut State Geological and Natural History Survey Bulletin 

 No. 22. 



