44 
Bulletin of Laboratories of De^iison University [Voi. xi, 
Females. 
First abdominal segment distinctly punctured ; lateral face-marks 
shaped like feet on tiptoe, . . . asinina, Ckll. & Csd. 
First abdominal segment indistinctly or not punctured ; small species ; 
clypeus with a light mark, .... mesillcBy Ckll. 
Note , — Some other species have been collected, but not yet satisfactorily 
identified. 
Subfamily. SPHECODIN^. 
Sphecodes. 
Females, 
Under 5 mm. long, abdomen long and narrow, orange. (Mesilla Val- 
ley.) ...... semicoloratus, Ckll. 
Larger, abdomen ferruginous, . . . . . .1 
1. Small, about 6 mm. long, abdomen black at the tip. (Me- 
silla Valley.) . . . mandibularis , Cresson. 
Large, abdomen not black at tip, nervures and stigma 
very dark brown, . . . . .2 
2. Mesothorax very strongly punctured, but the punctures 
separate, showing the shining surface between, . 3 
Mesothorax not so punctured ; very shining, with scat- 
tered punctures, . . . . . 4 
3. 8 to 8^ mm. long, mandibles simple, labrum not notched, 
head broad, flagellum ferruginous beneath towards end, 
wings dull hyaline, legs black, spurs of hind tibiae fer- 
ruginous, abdomen punctured only on the basal parts 
of the second and following segments, except for a few 
small scattered inconspicuous punctures; basal enclos- 
ure of metathorax distinct, semi-lunar, very strongly ir- 
regularly wrinkled, so as to be cancellate. (Mesilla 
Park, N. M., at flowers of Sophia, April 12 ; also at El 
Paso, Texas, May 13.) . . fortior, Ckll. n. sp. 
7 to mm. long, mandibles with a large tooth within; 
labrum scarcely produced, not notched ; head broad, 
orbits more converging below than in fortior ; metathor- 
acic enclosure shorter, with radiating wrinkles, and 
feebler cross ones ; otherwise much as in the last. (Me- 
silla Park, at flowers of Sophia, April 12, also at flowers 
of plum, March 23,) . . . sophice, Ckll., n. sp. 
4. Considerably more robust than mandibularis ; 6 mm. long, 
head large and broad, mandibles dentate within, la- 
brum not produced or notched, flagellum wholly dark 
brown ; mesothorax with very sparse punctures ; meta- 
thoracic enclosure distinct, semilunar, strongly irregu- 
larly wrinkled ; wings dusky hyaline ; legs piceous, 
tarsi becoming ferruginous ; abdomen sparsely punc- 
