Art. III.] 
Cockerell, JSIeiv Mexico Bees. 
63 
Length about 10 mm., face-markings white ; legs black, 
tibiae marked withjwhite and with a ferruginous spot at 
apex, tarsi white, dusky at tips. (Northern N. M.) 
. . . occidentale, Cress., 
5. Abdominal bands not notched or divided sublaterally, but 
more or less divided in the middle line, (Ruidoso 
Creek, Aug. 20, 1897; E. O. Wooton.) perpictuni, Ckll., n. sp. 9 
Abdominal bands divided in the middle, and notched 
sublaterally behind, (Santa Fe.) pudicum, Cress., 9 • 
Abdomen with a yellow spot on each side of first segment, 
a yellow band divided only in the middle on second, 
yellow bands broadly divided medially and sublater- 
ally on third to fifth, no yellow at all on sixth segment. 
Size small; legs ferruginous, yellow and black. (Gila R.) 
. . . . gilense, Ckll., 9* 
Larger, abdominal bands entirely divided into distant 
spots ; no yellow on face except two large blotches on 
clypeus. (Tuerto Mtn., 8025 ft.) . maculosum, Cress. 
Abdominal bands notched sublaterally in front, or even 
there divided but then the spots much larger than the 
intervals between them, .... 6 
6. Ventral scopa fulvous ; scutellum with two light spots. 
(Northern N, M.) . . occidentale, Cress., 9 • 
Ventral scopa white ; scutellum with four spots. (Mesilla 
Valley, Organ Mts.) . . niaculifrons. Smith, 9 • 
Note. — A. pcrpictum is about 9 mm. long, and agrees in most respects with 
the Mexican A. flavoUneatum, Smith. The femora are black ; all the knees fer- 
ruginous; tibiae ferruginous suffused with black behind; tarsi ferruginous, hind 
tarsi strongly stained with black. Sides of clypeus occupied by large triangular 
patches, of which the upper half is yellow and the lower orange ; sides of face 
yellow up to summit of eyes. Wings quite dark. Ventral scopa white. Tegulae 
ferruginous. Scutellum with an interrupted yellow band, but lateral angles 
spotless. 
OSMIA. 
Fe 7 nales. 
Ventral scopa black, ...... i 
Ventral scopa pale fulvo-ochraceous; head and thorax olive green, with 
white pubescence; tegulae shiningjrufotestaceous. (Mesilla Valley.) 
phenax, Ckll. 
Ventral scopa black in middle and yellowish-white at sides ; tegulae 
black. (Mesilla Valley.) .... prunoruin, Ckll. 
I. Length 9}^ mm., pubescence of thorax above bright rust- 
red. (Mesilla Valley.) . . . cerasi, Ckll. 
Larger, dark blue, pubescence of thorax dull white and 
black mixed ; clypeus broadly and deeply notched. 
(Organ Mts,, Paraje.) . . . lignaria, Say. 
