Dec. 1896.] Cockerell : New Insects from New Mexico. 205 
band of light yellow, broken in the middle. Venter very pale yellow without marks. 
The mandibles are notched within near the end. 
$. Length about 6.5 mm. The yellow color darker; flagellum orange beneath. 
Margin of stigma and adjacent nervures brownish, marginal cell therefore very dis¬ 
tinct. 3d discoidal excessively weak. Face all yellow beneath level of antennae, ex¬ 
cept clypeal dots, and small triangles at junction of clypeus, supraclypeal mark, and 
dog-ear marks. Supraclypeal mark slightly notched or depressed in median line 
above, not at all produced upwards. Lateral marks running obliquely from antennal 
sockets to a point on the margin of the eye, forming an angle of about 45O thereat- 
Mandibles yellow except tips. Labrum yellow with a dark spot on upper border 
medially. Prothorax yellow with a dark transverse band. Legs wholly yellow, ex¬ 
cept a dark stripe on hind tibiae, and dark last three joints of hind tarsi. Abdomen 
with five bands instead of four, some presenting square sublateral bulgings on anterior 
edge, not always obvious. 
Habitat: White Sands by Whitewater, N. M. Many of both sexes 
found by Prof. Townsend visiting flowers of Bigelovia , October 6th. 
On the same day we found a purple-flowered Aster at Whitewater 
visited by P. towjisendi, 1 $, 1 9, on e P. fallax , Ckll., and one P. 
semicrocea , Ckll. The $ townsendi from the Aster has the abdomen 
more darkened, so that it might be said to be black with light bands. 
P. townsendi is allied to P. bigelovice , but very distinct. The 9 is 
larger, and the femora are entirely yellow, etc. In my table of Perdita 
(Proc. Phil. Acad., 1896) it runs down to 77. The $ in the table 
runs down to 42. $ bigelovice differs at once from it by the yellow of 
the face extending above level of antennae in the median line. 
Perdita stottleri, sp. nov. 
9 • About 6 mm. long. Differs from townsendi in its small size, and in hav¬ 
ing the front femora with a large black patch behind, the middle femora with a black 
speck near the end, and the hind femora with the upper hind edge broadly black for 
the apical three-fifths. The clypeus is hardly so high as in townsendi , and the lateral 
face-marks run gradually to a point, the angulation being barely perceptible. The 
supraclypeal spots are present as in townsendi. 
Differs at once from bigelovice by the pale yellow venter of abdo¬ 
men, as in townsendi , that of bigelovice being dark brown. The abdo¬ 
men above also is marked just as in townsendi. The femora in bigelovice 
are all black except at their distal ends, in stottleri only marked with 
black, in townsendi without any black. 
Habitat: By Tularosa Creek at the store on the edge of the Mesca- 
lero Reservation, October 1st. One specimen on flowers of Bigelovia 
graveolens var. glabrata ,* a few feet within the boundary-line of the 
* The Bigelovia graveolens var., along Tularosa Creek is very attractive to flies] 
Prof. Townsend will report elsewhere on those of the families in which he is inter 
