68 Bulletin of Lahoi^atories of Denison University voi. xi.. 
Diadasia. 
Abdomen with clean-cut hair-bands; bases of second to fourth segments 
free from pale hairs. (Rincon.) . . . rinconis, (ZVW . 
Abdomen hairy all over, ...... i 
1. Rather large; hind tarsi with a large finger-like process. 
(Santa Fe, June, at fls. of Opiintia.) . australis, Cress. 
Hind tarsi without such a process, ... 2 
2. Very large ; $ very robust, with more or less distinct ab- 
dominal hair-bands. (Mesilla Valley, and by the White 
Sands.) .... megamorpha, Ckll. 
Little over lo mm. long; covered all over with yellowish 
pubescence, very dense and uniform on abdomen. 
(Rincon, Organ Mts., Santa Fe, Mesilla Valley, Dem- 
ing, etc.) .... enavata. Cress. 
Very small, about 8 mm., with pale grey or greyish-white 
pubscence. (Mesilla Valley, Santa Fe.) diminuta. Cress. 
About 8 mm. long, differs from diminuta by having the 
pubescence on the abdomen not uniformly dense, but 
thinner, leaving the apical hair-bands distinct, apacha, Cress. 9 * 
Synhalonia. 
About 15 mm. long, with dull white pubescence, tinged with yellowish 
on thorax ; brush of hind tarsi very bright ferruginous ; abdomen 
black, with first segment covered with greyish-white hair, and 
hair-bands of the same color on segments 2 and 3, the hair of these 
bands being appressed and very short. (Mesilla Valley.) lydi, Ckll. 
Habropoda. 
Rather large, robust, with a broad abdomen. Pubescence black and 
greyish-white mixed. Abdomen with very distinct hair-bands. 
Clypeus in ^ with a reversed T in white ; narrow white lateral • 
face-marks, reduced to a line above. Face of 9 black. (Top of 
Organ Mts.) ..... salviarum, Ckll. 
PODALIRIUS. (AnTHOPHORA.) 
Hind margins of abdominal segments with chalk-white bands, not due 
to hair, ....... I 
Hind margins of segments without such bands, . . .4 
1. Thoracic pubescence mixed black and mouse-grey; cly- 
peus of $ white, with the lateral margins broadly black. 
(Santa Fe.) .... cleomis, Ckll. 
Thoracic pubescence greyish or ochraceous, with no black 
hairs, . . . . . . ‘ 2 
2. Clypeus and sides of face yellow. (Deming, Mesilla Val- 
ley.) ..... californicus, Cress. 
Clypeus and sides of face white, ... 3 
3. Apical joint of middle tarsi ciliated laterally with black 
pubescence in (Vega S. Jose.) . walshii, Cress. 
