250 ENTOMOLOGICAL NEWS. [June, ’08 
segment 3, 4 and 5 deep yellow; tegule part yellow and part testa- 
ceous; wings hyaline, the apical margin slightly dusky; nervures, 
costa and stigma pale brown to testaceous; clypeus, lower inner orbits, 
lower part of cheeks, fore femora above thorax (more strongly so 
on pectus and posterior face of metathorax), sides of three apical 
abdominal segments with silvery pubescence. 
Habitat—Florissant, Colorado, July 6, 1906 (S. A. Rohwer). 
The following table will separate this species from all its 
allies. It is more closely related to rufifemur Pack., but quite 
distinct. The table is based on the females of the subgenus 
Protothyrepus (Fox’s group rufifemur). 
Head and thorax with long, dense hair; ventral segments of abdomen 
2-5 spotted with yellow (Calif) ........ villosus Fox. 
Head and thorax without such hair ; venter of abdomen immaculate. . I 
1. Posterior face of metathorax with two yellow spots (Atlantic coast 
meheraliy 2k: eas as eee bigeminus Patt. 
Posterior face of metathorax immaculate, black. ......... 2. 
2. Pygidium strongly margined bya wall, slightly but distinctly depressed 
apically ; head not larger than usual (Colorado, S. Dakota, 
Montana, Washington). «( . o5.s0's det. a ee dilectus Cress. 
Pygidium not thus margined and not depressed apically; head 
Warge oe ie 6 i eww we Iain Wot at 3. 
3. Mesopleurz striato-punctate throughout; enclosure of metathorax 
striato-punctate, posterior face distinctly transversely striate ; 
punctures of scutellum sparse; punctures of first abdominal 
segment large and distinctly separated ; second ventral seg- 
ment with large well-scattered punctures ; no yellow beneath 
tegulz ; two elongate yellow spots on third abdominal seg- 
ment; legs partly rufous; fore femora without or with very 
little white pubescence above (U. S. east of Rocky Mts., and 
north of a line from Nebraska to Maryland . . rufifemur Pack. 
Mesopleure distinctly striate above; enclosure of metathorax finely 
obliquely striated ; posterior face very finely transversely stri- 
ate; punctures of scutellum dense; punctures of first abdomi- 
nal segment finer and denser ; second ventral segment without 
large punctures ; a large yellow spot below tegule ; third 
abdominal segment with a broad band ; femora without rufous ; 
fore femora above with white pubescence (Colo.). 
megacephalus Roh. 
Crabro (.So/enius Lept. ?) ferrugineipes n. sp. 
$. Length 10 mm.; length of anterior wing 8 mm. Head not as 
wide as thorax, closely, finely punctured (punctures densest between 
the eyes; ocelli in a low triangle; each ocellus in a depression; dis- 
tance between the two lateral ocelli distinctly less than the distance 
