MORGAN HEBARD 107 



The normal general coloration in the present species is entirely 

 cinnamon buff, except the eyes which are l)lackish l)rown and 

 the distal portion of the ovipositoi- which, as in the other species, 

 is shining, dark reddish brown. In extremes of recession indi- 

 viduals are slightly paler, ochraceous-buft'. Some material is 

 ochraceous-tawny, while in a few specimens from southern Ari- 

 zona the dorsal segments, except the pronotum, are ])roadly 

 margined caudad with a very slightly darker shade, thus showing 

 close resemblance in general appearance to the 1)anded type 

 developed in M. nebrascensis Lugger. 



A number of specimens among those in a poor state of preser- 

 vation are as dark as pale material of oregonensis. It is clear 

 that, in so delicate and pale a species as the present, discoloration 

 readily occurs and is in our opinion responsible for this. As 

 color is important in distinguishing oregonensis and manni, the 

 possibility of discoloration in material of the latter species should 

 always be remembered. 



Specimens Examined. — 68; 16 males, 36 females and 16 immature indi- 

 viduals. 



Washington: Wawawai, Whitman County, III, 20 to IV, 24, 1909, 

 (W. M. Mann), 3 cf , 5 9, (hosts = Formica rufa obscuripes Forel, Formica 

 neogagales Emery, Formica rufiharbis var. occidentalis Wheeler, Formica 

 fasca var. argentea Wheeler, Formica fusca var. inarcida Wheeler), [A. N. 

 S. P., U. S. N. M., Hebard and Wheeler Clns.]. 



Nevada: Pyramid Lake, 2 c?, 1 $,2 juv. 9, (hosts = Myrmica viutica 

 Emery and Formica neogagates var. vclula Wheeler), [Mann Cln.]. 



California: Chino Canyon, five miles northwest of Palm Springs, IV, 

 5, 1917, 4 .small 9, (host = Tapinoma sessile Say), [Davis Cln.]. Palm 

 Springs, II, 15, (H. G. Hubbard), 1 small 9, 2 small juv., [U. S. N. M.]. 

 San Ysidrp, Cal, I, 6 and 7, 1911, (W. M. Wheeler), 1 o^, 3 9, (hosts = 

 Camponotus maculatus vicinus var. luteangulus Wheeler, Campouotus inacu- 

 latus nitidivetitris Emery), [Wheeler Cln.]. 



ArI':on.\: Grand Canyon Station, Coconino Plateau, 6800 feet, X, 6, 

 1919, (M. Hebard; under dark lava boulder in passages of ants' nest in dark 

 soil), 1 d", [Hebard Cln.]. Williams, Coconino Plateau, 6900 feet, I, 28, 

 1911, (W. M. Wheeler), 1 juv., (host = Formica fusca var. argentea Wheeler) , 

 [Wheeler Cln.]; V, 26 to VI, 3, (H. S. Barber), 1 d^, 2 9,4 juv., (hosts = 

 Formica fusca Linnaeus and Lasius niger var. sitkaensis Pergande), [U. S. 

 N. M.]. Ash Fork, VlII, 1, 1919, 5300 feet, (Rehn and Hebard; in ants 

 nest, Crematogaster lineolata Say var., under volcanic fragment at summit 

 of hilps), 2 9, [A. N. S. P. and Hebard Cln.]. Oracle, I, 8, 1914, (E. A. 



'5 In the field notes for the specimens taken at Ash Fork we note, "Their 

 paleness made them very conspicuous on the dark stone among the still 

 darker ants." This was true also for the material taken at Grand Canyon 

 Station. 



trans, am. ent. soc, xlvi. 



