June, 1914.] . Diptera of Middle America. 337 



Melanostoma Schiner. 



Melanostoma fenestra turn Macquart. Three specimens from 

 La Paz, Bolivia. 



Syrphus Fabriciiis. 



Syrphus bisinuatus Williston. Taken at Laguna, Guatemala. 



Syrphus poecilogaster PhiHppi. From Arequipa, Peru; La 

 Paz, Bolivia and from Valparaiso, Chile. 



Syrphus similis Blanchard. From Santiago, Chile. This 

 species is very similar to S. ribesii, but the markings are paler and 

 the wings are slightly fumose. 



Mesogramma Loew. 



Mesogramma basilaris Wiedemann. From Puerto Barrios 

 and Los Annates, Ouateniala and Boniato, Cuba. 



Mesogramma bidentata Giglio-Tos. From Puerto Barrios, 

 Los Amates and Santa Lucia, Guatem.ala. 



Mesogramma ciliata Gigilo-Tos. From Los Amates, Guate- 

 mala. 



Mesogramma confusa Schiner. From Los Amates, Guate- 

 mala . 



Mesogramma diversa Giglio-Tos. From Los Amates, Guate- 

 mala. 



Mesogramma duplicata Wiedemann. From Puerto Barrios 

 and Los Amates, Guatemala. 



Mesogramma laciniosa Loew. From Gualan and Los Amates, 

 Guatemala; vSan Pedro, Hondurus, and Holguin and Bonioto, 

 Cuba. 



Mesogramma linearis van der Wulp. From Los Amates, 

 Guatemala and Boniato, Cuba. 



Mesogramma marginata Say. From Los Amates, Guatemala 

 and Shdell, Louisana. 



Mesogramma polita Say. From Panzos, Gualan, and Puerto 

 Barrios, Guatcmal;;. 



Mesogramma rombica Giglio-Tos. From Los Amates, Guate- 

 mala and Boniato, Cuba. 



Mesogramma saphridiceps Bigot. From Georgetown, British 

 Guiana. 



Mesogramma subannulata Loew. From Boniato, Cuba and 

 Los Amates and Puerto Barrios, Guatemala. 



Mesogramma variabilis xan der Wulp. From Los Amates 

 and Santa Lucia, Guatemala. 



Sph^rophoria St. Fargeau and Serville. 



Sphcerophoria picticauda Bigot. Numerous specimens from 

 Los Amates, Guatemala and from San Pedro, Honduras. The 

 San Pedro specimens were collected by E. B. Williamson. 



