266 



lower margins white. The scales beneath are nearly white, without 

 evident pattern. 



Note 17, p. 251. — Laphystia 6-fasciata. — Dr. Williston says 

 (Trans. Am. Ent. Soc, Vol. 12, p. 53) : "Specimens of this species 

 from Montana differ appreciably from those from the Southern" 

 States that I have seen. In all the northern specimens the pol- 

 linose bands of the abdomen are all entire, while in the southern 

 ones they are mostly interrupted ; the femora, moreover, in the 

 former are mostly yellow, while in the others they are chiefly black. 

 These differences, if not sufficient to warrant specific separation, 

 may be varietally indicated by the name notata Bigot for the south- 

 ern form. " In our specimens the femora are reddish and the fifth 

 abdominal band is clearly interrupted. 



Note 18, p. 254. — Sphcerophthalma chlamydata. Melander ('03) 

 collected "several" specimens of a male mutillid in the sand region 

 about Bath (designated in this list as H.3) which he determined as 

 bioculata, and of a female, described by him as new under the name 

 chlamydata. Ten of my 16 unassigned males are his bioculata, and 

 61 of the 83 unassigned females are his chlamydata. On one occasion 

 one of these males was seen dancing in attendance upon a female 

 chlamydata, both being then captured. Their occurrence is coin- 

 cident, and they have close similarities in vestiture. It would seem 

 proper to accept them as two sexes of one species. However, biocu- 

 lata in the West has been connected by Cresson with quite a differ- 

 ent female, which Fox conjectures may be the same as creusa Ores- 

 son. Since the females are more reliably separable than the males, 

 it would seem best for the present to retain the name chlamydata 

 for both sexes in our region. 



Note 19, p. 254. — Sphcerophthalma macra. The single example 

 which is assigned to this species has an evident coarse orange pubes- 

 cence on the second segment, the dorsal reddish area of which does 

 not seem to be two partly confluent spots as is the case in the more 

 common types assigned to ferrugata and agenor, in which also the 

 pubescence is yellowish and not evident when viewed vertically from 

 above. 



Note 20, p. Zh^.—Ammophila argentata, n. sp. The sides of 

 the thorax are covered with a mat of uniform silvery pubescence, its 

 dorsum is less conspicuously silvery pubescent; the face is silvery, 

 the red or yellowish of the abdomen extends from near the base of 

 the second joint to beyond the middle of the fourth, or even upon 



