E. T. CRESSON, JR. 
41 
Arroyo, Porto Rico, Fei)ruary, 1899, (A. Biisck); 1 cf , Bayamon, 
Porto Rico, January, 1899, (A. Busck); 1 9, Utuado, Porto 
Rico, January, 1899, (A. Busck). 
Specimens Examined. — 19 cT, 22 9- 
San Domingo: 1 9, [Ivans.]. 
Porto Rico: Arroyo, II, 1899, (A. Busck), 1 S', [U. S. N. M.j. Bayamon, 
I, 1899, (A. Busck), 1 S, [U. S. N. M.j. Utuado, I, 1899, (A. Busck), 1 9, 
[U. S. N. M.j. Vieques Island, II, 1899, (A. Busck), 2 S, I 9, [U. S. N. M.]. 
Martinique, West Indies: VII, 27, (A. Busck), 3 9, [U. S. N. M.j. 
Costa Rica: Alajuela, 3100 ft. alt., IX, 8, 1909, (sweeping over brook), 
1 9 • Cachi, near Rio Reventazon, 34.50 ft. alt.. Ill, 4, 1910, 1 cf, 2 9 ■ Car- 
tago, V, 17, 1909, (along ditch), 2 cf , 3 9 ; V, 25, 1909, (along ditch), 2 cf ; VII, 
4, 1909, 1 9 ; X, 10, 1909, (sweeping over mud), 3 cf , 2 9 ; X, 27, 1909, 1 9 ; 
XI, 21, 1909, (sweeping over mud), 1 cf , 2 9 ; II, 19, 1910, (sweeping over 
mud), 1 cf, 1 9- Juan Vinas, II, 14, 1910, 1 cf- Peralta, III, 24, 1910, 
(sweeping over muddy stream), 2 9 . 
Variations. — The series examined show little variation in com- 
parison to the number examined. The color sometimes becomes 
more golden and on the frons obscures the darker vittae. The 
face may be gray and the number of aristal hairs may be increased 
to twelve. 
A female; Puerto Barrios, Guatemala, III, 3 to 14, 1905, (J. S. 
Hine), [Ohio]; evidently belongs near here. The face, however, 
is slightly broader with a slight brownish stripe in the middle 
below. In this respect it is apparently simulating /aa‘a/fs. 
Synonymy . — There is some possibility of this being Notiphila 
striata Williston, but a few discrepancies are evident upon com- 
parison with the description of that species. The original de- 
scription of striata suggests the present species, except that there 
is no mention of the frontal vittae, or of the four series of abdomi- 
nal spots. In these respects striata agrees with erythrocera, but 
differs in the distinctly vittate thorax not possessed by erythro- 
cera. 
Var. pura new variety 
Similar to virgata but thorax immaculate. 
Type. — cf ; Tabernilla, Canal Zone, Panama, April 27, 1907, 
(A. Busck), [U. S. Nat. Mus., Type No. 20722]. 
This form suggests erythrocera, but has the middle femora and 
tibiae ciliate. It is certainly allied to virgata, of which I prefer 
to consider it a variety. 
TRANS. AM. ENT. SOC., XLIII. 
