271 



in llic holloiii, and iIicn' could constantly be scvn browsing 

 upon tlio nii('ros('o])i(' alii'ac that covered the sides of the jar and 

 the subnieriivd leaves. They fed peaceably, side by side, with 

 the luoscpiitoes, which swarmed in the same water. 



Pupae: The outer coat of the full-grown larva hardens 

 into the ]niparium, with slight change in form, except that a 

 pair of prominent horns terminate the cephalic portion. At 

 this stage they become very bnoyant and float in masses or 

 lodge at the edges of the vessel. 



Professor J. M. Aldrich gives an interesting account''^ of the 

 use of the puparia of closely related flies for food by the 

 Indians of the AYestern ITnited States. 



Faiinid { If())iKiloinj/la) ptisio ( Wiedenuinn).f 



Ifah. South America, ranging north through West Indies 

 into Southern Ignited States. 



Uawailaa records. The collection of the Hawaiian Sugar 

 Planters' Association has seven specimens taken in ITonolulu 

 from 190-1- to 1007. also two specimens from Hawaii. 1005. 

 There are no specimens in the (^)llege of Hawaii collected 

 previous to 1914. 



Food liahits of larrac: The specimens in the collections of 

 Honolulu sliow^ that they have been reared from meat, papaia 

 stem, and dead Japanese beetles by Mr. Terry; and from 

 soured bread, dead cockroaches and chicken manure by the 

 writer. The latter substance was swarming witb them. 



Eggs: The eggs are white, beautifully sculptnred, and 

 have a median ridge above and a pair of lateral wings wliich 

 extend the entire length. They are laid in great numbers 

 ujion the surface of the food snpply. 



Larvae: The larvae, when freed from the substance m 

 which they are feeding, ;ire beautiful objects. They are bi-owu 

 in color and bear two prominent rows of fringed a])pendages, 

 which extend along the sides and aroun<l tlie caudal bordei-. A 



* Journ. N. Y. Ent. Soc. XX, 90-92. , v, tt e 



t The species has been determined by Frederick Knab, of the U. fe. 

 National ^Iiisenm, who states that it was described from South Amer- 

 ica, and is evidently widely distributed. 



