THE CANADIAN ENTOMOLOGIST. 245 



higher up ; again the muscles bring a tiny portion of the body further 

 round and down, and so this leverage goes on until the larva has com- 

 pleted its task, reversed its position, and rests with its head up and the 

 anchor-process oiitivards ; the spines on the skin of the larva, all of which 

 point down toward the base, assist it materially in obtaining a firm hold 

 on the inside of the coarctate larva, preventing it from slipping back." 



(Loc. Cit., p. 339-) 



Mr. Lintner asked if the Cecidomyid on choke cherry has been 

 described. Mr. Kellicott thought that the species had been described 

 by Riley, but Mr. Osborn stated that he had had it under observation for 

 four years, and so far as he knew no description of the species had been 

 published. 



Mr. Webster stated that he would send specimens of the galls on 

 Muhlenbergia Mexicana to any members of the Club who so requested. 

 He also stated that he had reared another species of Lasioptera from 

 small, black, orbicular mines on the leaves of a species of Solidago, pro- 

 bably S. lanceolata. The species was very small and the larvae were leaf 

 miners. 



Mr. Smith stated that he had seen the work of this species in New 

 York, but he had mistaken it for fungus attack. 



Mr. Stiles then made some remarks upon " A Cutaneous Disease of 

 Cattle Caused by an Arachnoid." (This paper will be published in the 

 next number of the C. E.) 



In reply to a question, Mr. Stiles stated that this parasite was found 

 as far west as Illinois and in many of the southwestern states, It shows 

 itself on living animals by small lumps upon the skin, and after a time 

 the hair dies at the place of attack. These, like most animal parasites, 

 are only with great difficulty transported from one animal to another. 

 There is a similarity in the species found upon the dog to that found upon 

 the pig. It is hardly possible to mistake these parasites for larval forms, on 

 account of the alomers upon the abdomen. 



As the Section of Biology was in session, the Club adjourned until the 

 close of that Section. 



The Club met again at 12.15, twelve members present. 



Mr. Riley read a paper upon Galeruca xanthomelcBna polygoneutic 

 at Washington, which will be published hereafter. 



Mr. Smith followed with a paper on Galeruca xanthomelcena mono- 

 goneutic at New Brunswick, New Jersey. 



