134 



tliree irregular rows of inacrochjptjp on tlie outer side of each 

 row, the front near the eyes densely covered with rather long 

 bristly hairs, sides of face each one and one-half times as wide 

 as the median depression, densely covered with rather long black 

 bristly hairs which are less nnmerons along the facial ridges, 

 the latter bare except that there are two or three bristles above 

 the vibrissa^, cheeks two-thirds as broad as the eye height, 

 antenna? almost as long as the face, the third joint six times as 

 long as the second, arista thickened to the tip, the penultimate 

 joint as long as the last one; thorax whitish pollinose, marked 

 with four black vitta»; scutellum bearing three pairs of long 

 marginal and a very slnn't apical pair of macrochieta^ ; abdo- 

 men wholly covered with whitish pollen, the hairs rather long 

 and suberect, first two segments eacli beat ing a marginal pair, 

 the third witli a marginal row, the fourth covered on its apical 

 half with niacroclnvta'; front pulvilli of male three-fourths as 

 long as the last tarsal joint; wings hyaline, third vein bristly 

 one-third of distance to the small crossvein, hind crossvein 

 arcuate, its posterior end slightly nearer the wing margin tliau 

 to the small crossvein, calypteres white; length, 14 mm. Los 

 Angeles Co., Cal. A male specimen captured by the writer in 

 April. Type No. 3G40, U. S. National Museum. . .turgUla n. sp. 

 Unrecognized species. — G. porca Williston, Canadian Entomologist, 

 Vol. A IX, p. 10; 1.SS7. Mount Hood, Oreg. 



Genus SPALLANZANIA Desv. 



SpaJlanzania Dcsvoitly, Essni siir les Myodaiies, p. 78; 1830. 

 Cneplialia Rondaui, Dipterologiiu Italica> Prodiomus, Vol. I, p. 62; 1856. 

 Acrof/lossa Williston, iu Sfmlder's Butterflies of New Eogland, Vol. Ill, p. 1916; 1889. 

 Pseiidogonla Brauer and Bergenstanini, Zweif. Kais. Mns. Wien, IV, p. 100; 1889. 



Brauer and Bergenstamm have already placed Spallanzania, One- 

 phalia and Pseudogonia as subgenera of one genus,' and Mr. F. H. 

 Snow has united these subgenera into one genus.-^ The synonymy of 

 Acroglossa is by the writer.' Our species are black, the palpi, scu- 

 tellum, and sometimes the sides and apex of abdomen and the first two 

 joints of antenna', yellow: four postsutural and four or five sterno- 

 pleural inacrocha'ta' : two pairs of orbital bristles in the female, want- 

 ing in the male: 

 1. Facial depression as wide as either side of face, bristles on the latter 



not arranged in rows 2. 



Facial depression twice as wide as either side of face, bristles on the 

 latter arranged in two rows, pollen on sides of front yellowish, 

 on the fa(;e white; third joint of antenna^ in the male three, in 



'Zweif. Kais. Mns. Wien, VI, p. 214; 1893. 



^2 Kansas University Quarterly, Vol. Ill, p. 181; .January, 1895. 



■'Psyche, \ol. Ml, p. 261; .July, 1895. 



i 



