86 THE BLOWFLIES OF NortTH AMERICA 
diverging to 0.32 of head width. Wing with costal sections 2 to 
6 in the proportions 90:70:100:100:12. Abdomen with several 
elongate bristles on each sternite. Otherwise like male except 
for normal sexual differences. 
Length. 8.0-8.5 mm. 
Only the six males and four females of the type series, which 
were collected February 22 to March 29, and September 5 to 
October 1, 1923, by Pablo Schild, are known to me. These were 
originally from the collection of A. L. Melander. 
Huascaromusca xanthorrhina (Bigot), new combination 
Calliphora xanthorrhina Bigot, Soc. Ent. de France Bull. 
CLXXX, 1887. (Type, male from Mexico, in the Collin 
Collection at Newmarket, England). 
Somomyia xanthorrhina Bigot, Soe. Zool. de France Bull. 12: 
602, 1887. (Same description of same material above). 
Mesembrinella chrysorhea Brauer (Moritz Ms.), Akad. der 
Wiss. Wien, Math.-Nat. Kl. Sitzber. (1)106(1) :596, 1895. 
(Specimens from Venezuela, in Vienna). New synonymy. 
Auascaromusca cruciata Townsend, Insecutor Inscitiae Men- 
struus 6:166, 1918; Aldrich, U. S. Natl. Mus. Proc. 62 (1): 
15, 1922. (Type, female from Peru, No. 53745, U. S. Na- 
tional Museum). New synonymy. 
Mesembrinella bequaerti Séguy, Eneye. Ent. (B II) Dipt. 
2:195, 1926. (Type, female from Peru, in Paris). New 
synonymy. 
Mesembrinella decrepita Séguy, Eneye. Ent. (B II) Dipt. 2: 
195, 1926. (Type, male from Colombia, in Paris). New 
Synonymy. 
A blue-black species with hyaline wings and orange front, 
antennae, and palpi. 
Female. Head width 12.8; length at antenna and at vi- 
brissa 6.5; eye height 8.8; head height 11.0; bucea 0.23 of eye 
height, orange, shining, with scattered black hair, no pale hairs 
before the metacephalic suture; frontale 0.60 of frontal width 
at lunule, orange anteriorly, brown to black posteriorly; front 
at narrowest (at vertex), 0.22 of head width, the margins nearly 
parallel anteriorly to within 2.0 units of lunule, then widening 
to 0.31 of head width at antennal base, with yellow pollen over 
orange ground color, and with some hairs in rows extending 
anteriorly to foremost frontal bristle; frontal rows of bristles 
extending to the base of the second antennal segment and not or 
but little divergent anteriorly, each row consisting of five or 
