296 THE CANADIAN ENTOMOLOGIST. 



Besides beetles tliere was almost nothing. I saw in all but one 

 Lepidopter — a tiger moth of the genus Eyprepia. Of Hymenoptera there 

 was an occasional bumblebee, wasp or ichneumonid. Of Hemiptera I 

 saw one Belostoma and one Nepa. Of Diptera I saw only craneflies- 

 wings and fragments of single specimens of Symplecta, Gonomyia, 

 Limnobia and Pachyrhina. Of Odonata I saw three specimens each of 



Libelltda 4maculata and Leucorhitiia Intacta. Of other groups I saw 

 none at all. The presence of drowned aquatic species, and the prevalence 

 of large, strong-flying species, were, as usual, obvious features. I followed 

 the drift line more than a mile. It appeared to continue southward 

 indefinitely. Drift lines are not very local ; this is the first time I have 

 seen either end of one. 



I will mention in conclusion an accompaniment of the drift that was 

 probably independent of most of the causes that brought the other insects 

 together : This was the copious intermixture of empty pupa-skins of 

 Chironomus. This is the blood worm that lives on the lake bottom. It 

 transforms to a floating pupa, whose skin is left on the surface when the 

 gnat emerges. The wind drifted these skins to the shore, forming a thick, 

 gray scum-like layer of them in the hollows of the shore, overspreading 

 the pier with a layer half an inch thick. The big beetles swam out with 

 their legs draped with these pupa skinsj which were inconceivably more 

 numerous than even the Lachnosternas. 



White grubs (larvoe of Lachnosterna) are occasionally excessively 

 destructive to blue-grass sod along this " North Shore." In the summer 

 of 1903 I saw acres of beautiful sward with all its roots eaten off two 

 inches below the surface ; it could be rolled up like a carpet ; in places 

 there were a dozen grown larvae per square foot beneath it. Perhaps 

 these devastating larvae come from eggs laid by adult Lachnosternas 

 broueht in with the drift. 



^£d' 



We learn with much pleasure, from Science, that Mr. Samuel 

 Henshaw, of Cambridge, Mass., has been appointed Curator of the 

 Museum of Comparative Zoology at Harvard University. His only 

 predecessors in the ofiice have been Prof. Louis Agassiz, the founder and 

 first Curator of the Museum, and his son, Dr. Alexander Agassiz. Mr. 

 Henshaw is well known among Entomologists as the author of the 

 valuable " List of the Coleoptera of America, north of Mexico," 



