Twelfth REroRx of the State Entomologist 229 



Ocellar tiiangle defined by a deep suture which extends down the 

 front; three transverse rows ot bristles occur on the front; six in the 

 posterior row, consisting of a median pair and four lateral; the middle 

 row is composed of four nearly equidistant bristles; six nearly so in the 

 anterior row, the median pair and the smaller ones just in front point 

 downward. Eyes bordered behind and below with a single row of 

 bristles, — very minute setae occur at the angles of the facets. Antennae 

 five-segmented; first short, irregular; second very large, subspherical ; 

 third and fourth cylindrical, slightly expanded apically; basal portion 

 of the fifth cylindrical and more slender than the preceding, distal portion 

 setaceous, much elongated, plumose. Labium yellow, usually re- 

 tracted; palpi yellowish brown, somewhat fusiform and bearing several 

 apical bristles; basal portion short, obscurely divided into several 

 sub^egments. 



Dorsum of thorax thickly pubescent, several stout bristles occur near 

 the posterior border of the scutum of the mesothorax and near the base 

 of the wings. Costal vein less than half the length of the wing; first 

 heavy vein joining costa near apical third of same; second heavy vein 

 forked near the apex; costal margin fringed with stout sette to tip of 

 second heavy vein; the four wing pores on this vein are even more dis- 

 tinct than in Phora agarici Lintn. ; first light vein nearly straight ; second 

 curved at basal fifth and apical fourth; third, fourth, and fifth, sinuate. 

 Basal portion of halteres brownish-black, apical portion inflated, yellowish- 

 white. Several apical bristles occur on the front and outer portions of 

 the coxse ; fore tibiae unarmed ; middle and posterior tibiae fringed with 

 stout spines posteriorly, each with a large apical spine^ tarsi about one- 

 fourth longer than the tibiae. Abdomen rounded dorsally, tapering from 

 a broad base. 



Length of body 1.92 mm. ; of wing 2.4 mm. 



Described from a number of specimens, all females. The puparium of 

 this species resembles closely that of Phora agarici except that it is a little 

 larger,— being about 2.4 mm. long. 



PiopMla casei (Linn.). 



The Cheese Skipper: The Ham Skipper. 

 (Ord. Diptera: Earn. Piophilid^e.) 



Macquart: Hist. Nat. Ins. — Dipt., ii, 1835, pp. 541-542 (common). 



Westwood: Introduct. Class. Ins., ii, 1840, pp. 573-574 (mention). 



Kirbv-Spence: Introduct. Entomol., 1846, p. 168 (mention as Tyro- 

 phaga casei). 



PTreat: in Harper's New Month. Mag., xxii, 1861, p. 609, fig. 2 

 (popular account). 



Harris: Ins. Inj. Veg., 1862, p. 621 (brief mention). 



LoEW : in Amer. Journ. Sci.-Art., 2d Ser., xxxvii, 1864, p. 320 (accom- 

 panying man; translation by Baron Osten Sacken). 



OsTEN Sacken: in Amer. Journ. Sci.-Art., 2d Ser., xxxvii, 1864, p. 318 

 (common to Europe and America) ; Cat. Dipt. N. Amer., 1878, 

 p. 199. 



