66 
Bulletin of Laboratories of Dejtis on University [\^oi. xi. 
Note , — Several other species of Megackile have been collected, but not yet 
studied. It is not certain that what is called brevis here is in reality Say's 
species. A specimen of M. brevis from Mr. Robertson has the ventral scopa all 
white. Say’s description does not indicate whether it should be black at the 
tip or not.' 
Subfamily. PODALIRIIN^. 
Melissodes. 
Males. 
Clypeus black, 
Clypeus yellow, 
I . Larger 
5 - 
7 . 
8 . 
9 - 
sp. 
antennse longer than head and thorax ; mandibles 
with no yellow spot. (Mesilla Valley, San Marcial.) tristis, Ckll. 
Smaller, antennae reaching only to metathorax; mandibles 
with a yellow spot. (Santa Fe.) . sphoeralcece^ Ckll. 
Antennae yellow ; thorax with bright fulvous pubescence. 
(Rincon, Mesilla Valley.) . . hUeicornis , Ckll. 
Antennae not yellow, .... 3 
Flagellum entirely black. (Ruidoso Creek.) riiidosensis , Ckll. 
Flagellum more or less ferruginous beneath, . 4 
Pubescence of middle of thoracic dorsum black. General 
size and form of aurigenia. Pubescence, where not 
black, dull white to pale ochraceous. Mandibles with 
no yellow spot. Nervures piceous. (Santa Fe, July and 
Aug., at fls. of Grindelia, Lepachys and Rudbeckia; also 
Tuerto Mtn., 8875 ft.) . . * grindelice,, Ckll., 
Pubescence of thoracic dorsum ochraceous or greyish, 
(some little black in montana.) 
Very large and robust, antennae only moderately long; man- 
dibles partly yellow, . .... 
Smaller, with long antennae. 
Abdomen dark, with hair-bands. (Santa Fe.) obliqua 
Abdomen entirely covered with fulvous hair. (Mesilla 
Valley.) .... townsendi, Ckll 
Last dorsal segment of abdomen with fuscous hair; man- 
dibles with a yellow patch, 
Last dorsal segment of abdomen with light hair, 
Scutellum with black hair; base of fourth abdominal seg- 
ment without black hair. (Gila R.) montana, 
Scutellum without black hair ; base of fourth abdominal 
segment with much black hair. (Mesilla Valley.) 
communis. Cress 
Larger ; about 12 mm. long, ... 10 
Smaller; about 10 mm. long, . . .11 
Mandibles with a yellow spot. (Santa Fe.) menuacha. Cress, 
Mandibles without a yellow spot. (Albuquerque, Mesilla 
Valley.) . . menuacha var. submenuacha, Ckll, 
Say. 
8 
9 
Cress. 
