92 THOMAS SAY FOUNDATION 



Legs black; middle femur with well-developed 

 comb of spines below apically, the anterior row, how- 

 ever, more slender and slanting ; middle tibia with two 

 bristles (one small) on outer front side; hind tibia with 

 sparse villosity consisting of onlj^ a few erect long 

 hairs, spreading both ways ; pulvilli very large, bro^vn. 



Female (on same pin). Front .28 of head, with 

 usual orbitals ; lateral vertical well developed ; ps dc 3, 

 with a doubtful looking hair behind the anterior one ; 

 scutellum with 2 marginal and 1 subapical; third ab- 

 dominal segment with median marginal pair and a 

 smaller interval than in the male each side ; fourth ab- 

 dominal segment witli red tip as in male ; genital seg- 

 ment red, the opening somewhat rounded; middle fe- 

 mur not with combs, the rows of bristles dwindling 

 tow^ard apex. 



Length of male 81/^, of female 8 mm. 



Two males and two females; the holotype male 

 and allotype female (on same pin), Plummer's Id., 

 Md., June 21, 1908, F. Knab, in the National Mu- 

 seum ; one male and one female, paratypes, Opelousas, 

 La., March and May, 1897, in tlie Hough collection. 



Holotype.— Male, No. 20.502, U. S. N. M. 



Allotype.— Female, No. 20502, LL S. N. M. 



No. 36. Sarcophaga pervillosa n. sp. 



A silvery tropical species with entirely red for- 

 ceps, first vein hairy. 



Male. Front wide, .2o() of head (average of 

 three, — .243, .261, .265) ; parafrontals about as wide 

 as middle stripe, very silvery ; paraf acials concolorous, 

 wide, with a row of slender hairs which become more 

 scattered above ; f rontals 9, the usual two or three di- 

 verging ones absent, so that the row ends at the first 

 fourth of the second antennal segment ; the lowest pair 

 only slightly divergent; vibrissfe distinctly above the 

 edge of the mouth, the epistome, however, making a 

 square angle, not rising obliquely; above the vibrissfe 

 some bushy hairs, merging into a row that extend half 

 way to base of antennae; antennae strikingly slender, 



