ART. 4. REVISION OF THE FAMILY THEREVIDAE—COLHE. 25 
Female.—Length 6 to7 mm. Very nearly as in the male. The 
shining black callosity above the antennae broader, above this a black 
velvet spot on each side near the eye (see fig. 16); upper frons yellow- 
ish gray pollinose, ocellar tubercle flat. Pleura and sides of mesono- 
tum seem more densely covered with beautiful iridescent scales than 
in the male. General infuscation of wing as in the male; no distinct 
apical spot. The color of the abdomen evidently varies from reddish 
to almost black; pale sparse pile on the first three segments, black 
beyond; thick covering of scales at base of abdomen. 
Type locality—Holotype, male, and allotype, female, collected on 
the sand dunes near San Francisco, California, June 6, 1920 (F. R. 
Cole). 
Type.—Cat. No. 25929, U.S.N.M. 
Paratypes.—A single male paratype in the National Museum, col- 
lected in Ormsby County, Nevada, July 6 (C. F. Baker), was sent to 
Kroéber by the National Museum and was returned labeled ‘“‘n. gen. 
et sp., near Ozodiceromyia.”’ Several paratypes are in the Cornell 
University collection, taken at Felton, California, May 25, 1908 (J.C. 
Bradley). Two paratypes in the Stanford University collection were 
collected at Palo Alto; other paratypes are in the California Academy 
of Sciences and in the writer’s collection, taken in the type locality. 
Paratypes from the writer’s collection were sent to the British Mu- 
seum, Philadelphia Academy of Natural Sciences, Museum of Com- 
parative Zoology, C. W. Johnson, and Prof. M. Bezzi. 
On the date that the types were collected the writer went out to 
the sand dunes at the edge of Golden Gate Park, near San Francisco, 
in company with E. P. Van Duzee, und a good series of this 
remarkable little species was taken. They were running over small 
open spaces out in the dune vegetation and did not get out in the 
wind-swept open sand. None of the specimens were seen to fly more 
than a few inches and none were swept from vegetation. The males 
seemed to be more active than the females; when seen from above 
they blend with the dead brush and dune land over which they run 
and fly. 
Genus FURCIFERA Krober. 
1911. Furcifera KROBER, Ann. Mus. Nat. Hung., vol. 9, p. 524. 
The genus is near Pstlocephala, judging from the description. The 
third antennal joint is longer than the first and second combined, the 
first about three times as long as the second; the style is on the un- 
derside of a strongly produced tip. The abdomen and legs are rela- 
tively long, the fore metatarsi thickened. 
The only species known, Ff. fascipennis Kréber, is described from 
afemale. The upper part of the frons is semishining black, the face 
