NOTES ON "PITNKIES." 27 



C. websteri Coq. was collected April 17, 1887, by Prof. F. M. AVeb- 

 ster at Ashwood, La., on bushes in company with a species of Si- 

 niulium. 



G. mutahilis Coq., reared from human excrement by the writer in 

 the District of Columbia June 17, occurs also at Jacksonville, Fla. 

 (Mi's. A. T. Slosson, collector). 



O. griseus Coq. was captured on human excrement by the writer at 

 Travilah, Md., in June. It has been collected also in Florida and 

 .Vrizona, and Prof. T. D. A. Cockerell fovmd it on a horse at Pecos, 

 N. Mex. This s})ecies, as well as C. mutahilis, were recorded by 

 Dr. Ij. O. Howard in an article on the msect fauna of human excre- 

 ment as "Ceratopogon species." "" 



C. specularis Coq. was reared by Mr. C. L. Marlatt from horse and 

 cow manure during his investigation on the horn fly (Ilsematohia 

 serrnta R.-D.) in Virginia in 1889. It has been collected also at 

 Springfield, Mass. (Dimmock); Philadelphia, Pa., June 28, and 

 Natrona, Pa., July 30 (C. W. Johnson); District of Columbia, August 

 11 (F.C. Pratt); Woodside, Md., October 12 (J. E. Benedict, jr.); War- 

 renton, Va., August 23, and Rosslyn, Va., December 30 (C. L. Mar- 

 latt), and in Colorado. 



W. H. Long'' found larvae of this species on the under side of dry 

 cow dung from August to December, but more abundantly during 

 November and December, in company with O. hrumalis at Austin, 

 Tex. 



C. hrumalis Long. Mr. W. H. Long writes of this species as fol- 

 lows: *" 



During November, December, and January the larvas of this species were found in 

 immense numbers on the under side of nearly dry cow dung. They seem to feed on 

 the dung, never penetrating very far into the substance. No eggs were found. The 

 duration of the larval stage seems to be several weeks, that of the pupal stage seven 

 to ten days. * * * Several hundred larvae of all ages were found on the under 

 surface of a i)iece of moist rotting elm wood; similar larvie and puparia were also 

 found in the nests of the common foraging ant {Enton va'ciim) on several different 

 occasions. 



Mr. Long states that he reared imagines from larvae taken in these 

 various situations and they proved to be the same species. It is 

 known from Austin, Tex. 



C. stenammatis Long. Long writes of this species as follows:*^ 



The specimens were received from Dr. W. M. Wheeler, who found them in (he nest 

 of an ant {Stcnamma fulvum subsp. aqnia) at Colebrook, Conn., August, 1900. They 

 were moving about in the refuse heaped up by the ants in certain portions of their 

 nests. The species seems to be a genuine myrmecophile like the European species 

 ( C. Braiieri Wasmann) . 



a Proc. Wash. Acad. Sci., Vol. II, p. 559, 1900. 



6 Biol. Bui., Vol. Ill, pp. 7-10, figs. 3-6 (in part), 1902. 



cL. c, Vol. Ill, pp. 3-7, figs. 1, 2, 6 (in part). 



dL. c, p. 10, figs. 4, 6 (in part). 



