240 THE BLOWFLIES OF NortH AMERICA 
Musca insularis Walker, Insecta Saundersiana, vol. 1, p. 340, 
1856. (Type, from West Indies, in the British Museum.) 
Somomyia amazona Bigot, Soc. Ent. de France Ann. (5) 7:255, 
1877. (Type, in the Bigot Collection, Newmarket, England.) 
Somomyia mutabilis Bigot, Soe. Ent. de France Ann. (5) 7:248, 
1877. (Type, Mexico, in the Bigot Collection, Newmarket, 
England. ) 
Somomyia orenoquina Bigot, Soe. Ent. de France Ann. (5) 
7:253, 1877. (Type, from Brazil, in the Bigot Collection, 
Newmarket, England.) 
Somomyia pueblensis Bigot, Soc. Ent. de Franee Ann. (5) 7:250, 
1877; Brauer, Akad. der Wiss. Wien, Math.-Nat. Kl. Sitzber. 
(1) 108:522, 1899 (Lucila). (Type, in the Bigot Collec- 
tion, Newmarket, England.) 
Somomyia sylphida Bigot, Soc. Ent. de France Ann. (5) 7:45, 
1877; Brauer, Akad. der Wiss. Wien, Math.-Nat. K]. Sitzber. 
(1) 108:528, 1899 (Lucilia); Tothill, Ent. Soc. Amer. Ann. 
6 :256,1918. (Type, New Orleans, La., in the Bigot Collec- 
tion, Newmarket, England.) 
Lucilia hirtiforceps Shannon, Wash. Ent. Soc. Proce. 28 (6) :133, 
1926; Curran, Scient. Survey Porto Rico and Virgin Islands, 
vol. 11, pt. 1, p. 98, 1928; Roberts, Ecology 14 (3) :309, 1938. 
(Type, male [with female in cop.| from Canal Zone, Pan- 
ama, No. 28892, in U. S. National Museum.) 
A blue-green species with the abdomen highly polished. 
Male. Head length at antenna 4.9 and at vibrissa 5.4; height 
10.8; width 12.8; eye height 8.5; bucea 0.23 of eye height, orange 
to orange brown in ground color, covered with coarse yellowish 
to golden pollen, and with scattered dark hair, no pale hairs 
before the metacephalic suture; metacephalon slightly protuber- 
ant posteriorly; frontale dark reddish brown, obliterated for at 
least 1.0 unit below anterior ocellus but wider than either para- 
frontale at lunule; front at narrowest 0.04 of head width, 0.13 
at vertex and 0.22 at lunule, with silvery to yellowish pollen, and 
with a few short pale hairs outside frontal bristles which extend 
anteriorly to foremost frontal bristle; frontal rows of bristles 
extending anteriorly to about the base of the second antennal 
segment and diverging as they follow the margins of the frontale, 
each row consisting of about 10 bristles which are long anteriorly 
and weak or nearly vestigial posteriorly; vertex subpollinose, 
dark brown to black; elypeus with thin yellowish silvery pollen 
over yellow orange to orange ground color; epistoma often with 
