134 
three irregular rows of macroclisetse on the outer side of each 
rowj 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 numerous 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 vittae; scutellum bearing three pairs of long 
marginal and a very short apical pair of macroclneta>; abdo- 
men wholly covered with whitish pollen, the hairs rather long 
and suberect, first two segments each bearing a marginal pair, 
the third with a marginal row, the fourth covered on its apical 
half with macroch;et;c: 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 than 
to the small crossvein, calypteres white; length, 14 mm. Los 
Angeles Co., Oal. A male specimen captured by the writer in 
April. Type No. 3640, U. S. National Museum. . .turgida n. sp. 
Unrecognized species. — <}. porca Williston, Canadian Entomologist, 
Vol. MX, p. 10: L887. Mount Hood, Oreg. 
Genus SPALLANZANIA Desv. 
Spall an zania Desvoidy, Essai snrlea Myodaires, p. 78; 1830. 
Cnephalia Rondani, Dipterologia' Italic* Prodromus, Vol. I, p. 62; 1856. 
Acroglo88a Williston, in Scudder's Butterflies of New England, Vol. Ill, p. 1916; 1889. 
Pseudo</onia Brauer and Bergenstamm, Zweif. Kais. Mas. Wien, IV, p. 100; 1889. 
Brauer and Bergenstamm have already placed Spallanzania, Cne- 
phalia and Pseudogonia as subgenera of one genus, 1 and Mr. F. II. 
Snow has united these subgenera into one genus. 2 The synonymy of 
Acroglossa is by the writer. 5 Our species are black, the palpi, scu- 
tellum. and sometimes the sides and apex of abdomen and the first two 
joints of antenna 1 , yellow: four postsutural and four or five sterno- 
pleural inacrochsetae ; 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 face white; third joint of antennae in the male three, in 
'Zweif. Kais. Mus. Wien, VI, p. 214; 1893. 
-Kansas University Quarterly, Vol. Ill, p. 181; January, 1895. 
'Psyche, Vol. VII, p. 261; July, 1895. 
