1921] Banks: Nearctic Fossorial Hymenoptera 25 
The Eastern species of Dasymutilla that I have seen can 
be tabulated as below for the females. I have used several 
of Mr. Rohwer’s names, although some may be only varieties, 
others however are surely distinct species. Mr. Rohwer has 
kindly examined several of my specimens and furnished notes 
on the structure of some of his types. 
IF 
10. 
> 
Hair of head, thorax and abdomen long and dense, red or yellow, the 
abdomen with a median band of black hair, large species................ 2 
Hair of head, thorax and abdomen above more sparse, so that the 
sculpture can be more or less plainly seen; abdomen not red or yellow 
with a median black band, smaller species: ..... 02.5.6. ce cece ee cee eee 3 
LR IBNEE aril El Client Bhat adi! Be tre ee a) ee A i By IC a Daeg occidentalis 
lair SVG MONVISUE Sorta Men: eM etna foc tone CAN ete ction edo hoe a comanche 
Memplesswitovaqenuperclerar caemiae "Nel wes wc satan aan ate ale wes, bios 4 
Memples; wathout tubercle Or carimaiete chic kn take ie teehee er 10 
Petiole quadrate, hardly thickened posteriorly; pygidium striate; second 
segment black haired at tip, others with pale hairs......... rugulosa Fox 
Petiole plainly enlarged and thickened behind........2...... 0.00 euee 5 
Antennal scrobes carinate above; tips of second and third segments 
black-haired; pygidium striate; spurs pale................ cariniceps Fox 
PLC SCLO DES NovCariiate aAWOVE. ras. belle ie oho dee eee 6 
Hair at tip of first segment largely pale; at tip of second pale, with a 
mreciat lao k paket. ey.) Mysese etme, Delors Cie cere Tbh ea ass heat e a 
Hair at tip of first segment largely black; at tip of second segment either 
all black, or pale in middle; pygidial striae reach the tip.........0...... 9 
Temples with an outer carina; pygidial striae weak, hardly reach tip; 
metathorax strongly rugose; third joint of antenna but little longer 
PINAOLOUL IT EN eM rin ee nena or a, kts eC ehaninoocner brad. 
Temples with a superior oblique tubercle directed toward eyes.......... 8 
Pygidial striae strong, but do not reach the tip, eyes about diameter 
from-tubercles; hair of metanotum: pale... 022.000.0050 ee... allardit Roh. 
Pygidial striae reach tip; eyes less than diameter from the tubercles; 
hair of upper part of the metanotum black.............. rubicunda Brad. 
Hair at tips of second and third segments mostly pale........... cypris Bl. 
Hair at tips of second and third segments mostly black....... alesia n. sp. 
Pyeidim plamly striace longitudimally 25. 7.00. sai v2 cdioas Sabena ee wee 12 
PyoiGtiine not stiave loncitudinallys. 20 te Pe eC a ee ah a oe 11 
Pygidium finely granulate; second segment with black hair in middle; no 
scutellar scales heads broader than thorax..................:8..200 obscura 
Pygidium irregularly rugose, or with short longitudinal rugae; second 
segment with a pale spot in middle of hind margin; first segment with 
black hair at-tip; head not-as. broad’as thorax.................. harmonia 
INDHSCiie lcines Callen pra ait en Aarau Nek. nse, ote EIR ne ahig A 13 
TANS! Bice iis Sones oe oye cea. dhe Bean nee gn Oe ht ne Re Se 15 
Hair at tip of first segment pale, that at tip of second pale in middle, but 
dMeas CpatOhe cach cider any. tk ne a seeh alee ee eo BM finnt Roh. 
Ricitae tplOlinst seemicn Glolaclic. tes ceil era. C ocieee uta ccc ol eee ees 14 
A small spot of yellow hair in middle of apical margin of second segment, 
blawa Roh. 
Noesuch) spot) hair of margin black’ = 2 yes ee champlaint Roh.» 
Cetraieversercatina at tip ormesononimm 60.84)... kl. kes kc ee ede once 17 
ING Sal Sees gE as papereadlicses ce a dla oases cage ga 16 
Hair at tips of first and second segments pale.................. sappho Fox 
Hair at tips of first and second segments black.................. sella Roh. 
Tipre: second segment with) black Hair 7.0... . 5... ferrugata Lep. 
Tip of second segment with a pale median spot; eyes larger in proportion 
LOMUICAGUMME eet ee eee ie Oe ee 5.0K on bere georgiana Roh. 
