SNOW. AMERICAN PLATVPEZID.E. 1 45 



species recorded. In the latter year Dr. Williston described a 

 Callomyia from Mexico.* Townsend's species (I. c. 1894) completes 

 the list, making a total of 44 species hitherto known, to which num- 

 ber eight are added below. 



Of the twelve American species hitherto described but one is 

 distinctly western, namely: Callonixia bella Will, from Mexico, the 

 others are from New Hampshire, New York, Pennsylvania, District 

 of Columbia and Illinois. To this list of American habitats may be 

 added Kansas and New Mexico. 



The following tables of the American species of Platypeza are 

 constructed partially from descriptions, as Loew's species flavicoj-nis 

 p'xllipes, obsciira and anfhrax are unkaovva to the writer. 



PLATYPEZA. 



TABLE OF SPECIES — MALES. 



1. Hind tarsi remarkably exaggerated and elaborate; first joint 



with long setaceous clubbed appendage 2 



Hind tarsi somewhat enlarged as usual and without such 



appendage 3 



2. Fourth tarsal joint much larger than any other ornatipes. 



Second tarsal joint the largest calceata. 



3. Antenniis yellow; abdomen velvety black flavicornis. 



Antenna black 4 



4. Prevailing color velvety black 5 



Thorax cinereous; second and third adominal segments 



pallid, fourth and fifth black piilchra. 



5. Abdomen except last segment velvety black, without cinere- 



ous markings veliifina, antlirax . 



Abdominal segments three to five black, immaculate; second 



segment with broadly interrupted cinereous band, itnibrosa. 



TABLE OF SPECIES FEMALES. 



1. Antenna, first two joints at least, yellow or lutescent 2 



Antennae black 4 



2. Abdomen yellowish brown, cinereous posteriorly, with black 



bands enlarged in middle calceata. 



Abdomen cinereous with black bands 3 



3. Legs lutescent; sides of first abdominal segment lutescent, /(i'/ZZ/^cj-. 

 Legs infuscate, hind legs fuscous brown; sides of first 



abdominal segment cinereous fcniiata. 



4. Velvety black species 5 



Cinereous species with black abdominal cross bands 6 



''Biologia Ceutrall-Americaua, Diptera, Vol. III. p. 89. 



