6 MAINE AGRICULTURAL EXPERIMENT STATION. I9II. 



mitted were badly decayed and infested v/ith the larvae of this 

 fly. It is quite possible that the infestation by the fly occurred 

 after decay had set in, as some decayed tubers were found free 

 from larvae. The flies emerged the latter part of June. 



Phorbia (Chortophila) cinerella. 



A number of specimens, both male and female, were reared 

 from larvae associated with Mnsca domestica from horse manure, 

 the flies emerging about September i. This insect was first 

 described by Fallen and redescribed by Meigen under the name 

 of pusilla, under which name it is given by Schiner (II. p. 638). 

 The description by Rondani in Dipt. Ital. Prodromus VI. p. 220 

 is most characteristic. 



Hccmatohia sciTata (Horn fly). 



This insect has been recorded from Maine in the Report of 

 Maine Agr. Expt. Stat, in 1892 and again in 1896. These 

 pests were very abundant this year during August, upon the 

 University herd. 



Musca domestica (Typhoid fly). 



Many specimens were reared from nearly fresh, non-ferment- 

 ing horse manure. The eggs were deposited about Aug. 20, 

 the flies emerging September 8-10. Associated with this species 

 were the larvae of Sphccrocera suhsultans, Borhorus gcniculatus, 

 and Phorbia cinerella. 



Phormia regina. 



The larvae of this widespread species were found early in 

 July, in decaying water melon rind. Adults emerged July 29-30. 

 In the key on p. 342 of Williston's manual (3d Ed.) the last line 

 reads, "Mesonotum flattened behind transverse suture." This 

 does not apply to Phormia regina. See also Townsend's state- 

 ment in last paragraph on page 123, Smithsonian Miscellaneous 

 Collections, Vol. 51, and Thompson's note, last paragraph on 

 page 213, Psyche, Vol. XVII. 



