29 



facility backward or forward, either side up. If provided with some support at 

 one side it was possible for it to travel by means of the legs on its dorsal surface 

 alone." 



During the present season an example of a similar larva has come to my 

 notice, specimens being first observed by Prof. L. H. Pammel, occurring in the 

 stems of Helianthus. Their possessing similar locomotive organs upon the back 

 called to mind the peculiar larvae noticed years ago. They differ, however, some- 

 what in colour as well as in the plant on which they occur, and I find that they 

 attacked voraciously dipterous larvae that were living in the same stems. 

 Whether the}^ are normally carnivorous remains of course to be determined, but 

 there can be no question of their attacks upon these larvae, and apparently with 

 the intention of obtaining food from them. These specimens are of a light bluish 

 colour, possessing pro-legs upon segments 4-9, inclusive, and a pair of tubercles 

 on the ventral portion of the anal segment, as well as a dorsal tubercle on the 

 terminal portion of the same segment. In general appearance there is a striking 

 resemblance to the Langnria larva, as shown in figure exhibited by Dr. Weed, 

 but in his drawing there is no indication of the dorsal feet. 



The Club convened at o p.m., and considered the following resolution :— 



Resolved, That it is the sense of the Chib that the meetings of the Association of Economic Entomo- 

 logists and of the Entomological Club wonld both be benefited by holding such meetings, if possible, all 

 the same time and place as the meetings of the American Association for the Advancement of Science. 



After discussion by Messrs. Fletcher, Osborn, Cook, Alwood, Weed and others, 

 the resolution was unanimously adopted. 



The Secretary read a paper by Prof. D. S. Kellicott, of Columbus, 0., upon 

 the " Preparatory Stages of Eustrotia caduca." He had collected the larvge upon 

 Nuphar aclvena at Rives Junction, Michigan, in 1876. From these he had bred 

 a moth, afterwards named by ^Er. Gfrote E. cacluca in the Canadian Entomolo- 

 gist, Vol. 8, p. 207. During July of the present year he had again collected the 

 insect at Corunna, Michigan, and had succeeded in breeding and describing all the 

 stages, which were submitted herewith. 



The larvae found in 1876 were feeding in the fruit but those studied during 

 this summer were found upon the leaves. If these latter were floating, the larvae 

 were exposed on the upper surface, in other cases they were beneath or concealed 

 in folds. A different habit of swimming to that of Arzavia obliquata, which 

 progresses by horizontal undulations, was noted. E. caduca swims strongly, but 

 by an entirely different motion. The posteriiT third of the body is bent down- 

 wards like the tail of a crayfish and then quickly pushed backwards, thus driving 

 the insect ahead by jerks. 



Discussed by Messrs. Weed, Webster and others. 



Prof. Cook reported having bred Agrotis C-nigrum through all its stages 

 upon black currant, the eggs having been laid in a cluster upon leaves of that 

 plant on 1st June — the perfect insect appearing on the 1st of August. 



Prof. H. Osborn read a note on the " Period of Development in Mallophaga." 

 The habits of the species of Mallophaga render accurate observations upon the 

 time required in development of the eggs a matter of considerable difficulty. 

 While in some of the species upon very common birds it is possible to get an 

 abundance of material, in other cases the opportunities for obtaining such mate- 

 rial are very rare. But in the most common species the difficulty of determining 

 the exact time of deposition of eggs, and then of keeping individuals in such 

 conditions as to insure a normal development, makes positive observations diffi- 

 cult. This being the case, any observations which may add to our knowledge of the 

 subject seem of interest, and the present note is ofiered as one such contribution. 



