352 Professor Williston on the 



joint also, more or less reddish ; third joint a half longer than the 

 second. Face ashy grey, somewhat yellowish in the middle below ; 

 a slender black line on either side running from the root of the 

 antennae. Palpi reddish yellow. Dorsum of thorax opaque golden 

 yellow, with two median slender stripes, and a lateral, broader 

 one, anteriorly abbreviated, black. Abdomen wholly reddish- 

 yellow, with black hairs ; fourth segment and the third, save an 

 interrupted band, light golden opaque-yellow. Tegulae light yellow. 

 Legs black. "Wings uniformly subhyaline ; first posterior cell 

 closed at some distance from the margin. 



$ . Sides of front and the face silvery grey, a little yellowish 

 near the vertex. Mesonotum densely yellowish grey pollinose, 

 with two median brown lines and a broad, shining, black stripe on 

 each side. Abdomen shining black, the third and fourth segments 

 opaque greyish white, save a posterior interrupted band on the 

 third, and two small spots on the fourth. Tegulae white. 



Six males and two females. The species closely 

 resembles some of the varieties of C. occidua. Walker^ 

 but seems sufficiently distinct in the pollinose markings 

 of the abdomen and the petiolate first posterior cell, 

 which is closed at some distance from the margin. 



Trichopoda. 

 Latreille, in Cuvier^s Kegne Animal., v., 512, 1829. 



1. Trichopoda pennipes. (PL XI._, fig. 100, wing.) 



Musca pennipes, Fabricius, Ent. Syst., iv., 348. 



Dictya pennipes, Fabricius, Syst. Antl., 327. 



Trichopoda pennipes, Wiedemann, Auss. Zw. Ins., ii., 

 274 ; Desvoidy, Myodaires, 288 ; Wulp, Tijdschr., 

 v., Ent.,xxvi., 15 ; Biol. Centr.-Amer. Dipt., ii., 3; 

 Brauer and Berg., Muse. Schiz., i., 79. 



Phasia jugatoria, Say, Compl. Wr., ii., 64, 



Hah. United States ; West Indies j Central and South 

 America. 



Five specimens. 



Elachipalpus. 

 Rondani, Esap. Ditt., Ann. di Bologna, 1850. 

 1. Elachipalpus macrocerus. (PL XI., fig. 99, wing.) 

 Tachina macrocera, Wiedemann, Auss. Zw. Ins., ii., 290. 



