THE CANADIAN ENTOMOLOGIST. 37 



in other departments of zoology as well as botany, have brought about 

 great changes. I have had no trouble in crossing ^ and $ Gloveri with 

 cea?iot/ii, cecropia and ceanothi, and Gloveri and cecropia, and have now 

 in my possession some fine cocoons of such hybrids between ceanothi 

 and ceavpia, of which I will speak after the imago appears. 



\ 



ENTOMOLOGICAL NOTES. 



BY DR. H. A. HAGEN, CAMBRIDGE, MASS. 



1. Cecidojnyia spec, on Aristolochia sipho. 



Flat rounded galls on the under side of the leaves, pale, somewhat 

 transparent, pale greenish, 4 mil. diam. On the upper side of the leaf the 

 gall becomes a slightly elevated disk marked with dark red and having in the 

 middle a small pale-bordered hole. The galls grow larger and more globular 

 on the stems of the leaves, to globes of 8 mil. diam., some rriore elongated, 

 18 mil. long and 8 mil. broad. The larvae are brick red, 3 mil. long, very 

 agile. I find no species on Ai-istolochia described by Osten Sacken and 

 others. 



2. Caterpillar oi Papilio philenor on Aristolochia sipho. 



I received a number nearly full grown, and young ones (about 10 

 mil. long). Harris, Ent. Corresp., p. 147, discovered them on the same 

 plant in the botanical garden in Cambridge, August, 1840, and Mr. Scud- 

 der. List of N. Engl, Butterflies, p. 162, says "once or twice taken in 

 Eastern Mass. last September." I don't know if the species is taken more 

 often, but it is remarkable that the caterpillars (about two dozen) were 

 nearly full grown on June i6th, as Harris and Scudder give August and 

 September. 



3. Nematus Erichsoni on Larix Europaca. 



A large number of larvse very young to nearly full grown, some pro- 

 bably full grown, were sent living with the twigs. The larvae agree per- 

 fectly with description and figure in Ratzeburg's Forst-Insecten, Tom. iii., 

 pi. 3, f 4. The species is not represented in the collection here, neither 

 in the larva nor in the imago state. It is not mentioned in Mr. Norton's 

 Catalogue of N. Am. Tenthridinidae. I have to remark that the larvae 

 of the three other species living in Europe on Larix, viz., Lyda laricis, 

 Nematus solea and compressa, from their description, do not agree with 

 those sent to me. I am indebted to the Harvard Arboretum and its 

 Director, Mr. Chas. S. Sargent, for these specimens. 



