102 
PSYCHE 
[October 
middle tarsi black; of hind tibiae long (plumose on outer side) and stained with 
pale fulvous, some of the apical hairs on inner side tipped with black; basal joint 
of hind tarsi with long pale fulvous-tinged hair covering basal half outside, other- 
wise the hair is black, long, coarse and abundant on inner side. Third joint of 
maxillary palpi long. 
Hab . — Oak Creek Canyon, Arizona, 6000 ft., .Aug., 2?. {Stiow, 1988 and 
1993.) Easily known for M. martiiii C^\., by the color of the hair on the legs, 
the white hair showing at sides of fifth abdominal segments, and the narrower 
face. The black hair on thorax above, and other characters, separate it from 
M. blakci, Ckll. It really has a good deal of affinity with M. glamwodensis Ckll., 
but is more robust, and is distinguished by the ochreous and black hair of thorax 
above, the hair on inner side of hind tibiae not black, their spurs longer, the hind one 
gently curved. It is conveniently distinguished from M. viysops Ckll., by the 
light hair of the pleura, and the bicolored middle tibiae. 
Mebissoi/es se 7 nitrisHs, n. sp. 
$ This is exactly what a hybrid between M. fristis and M. vienuacha might 
be imagined to be like. It has precisely the stature, pubescence, etc. of AI. 7 nen- 
uacha, but the clypeus is wholly black (densely covered with white hair), the face 
is considerably broader, and the eyes are reddish-grey. The mandibles and 
labrum are black; there is no black hair on the disk of the thorax. From AI. 
tis it differs in having the stature of ) 7 ie 7 iuacha, and the nervures piceous or very 
dark brown; the width of the face agrees with Iristis. Tegulae black, as in f/istis. 
The insect is to Iristis much as 7 )ie 7 iuacha is to agilis. 
Hab . — Oak Creek Canyon, Arizona, 6000 ft., July. {F. H S 7 ww, 2009.) 
Alclissodes p/xHanta, n. sp. 
$ . This looks just like AI. se 77 iiirisiis, and was placed with it until the very 
different head was observed. The eyes are black and very prominent, and the 
face is narrowed below, so that the length of the facial quadrangle is considerably 
greater than its breadth at the lowest point; the face is very densely covered with 
long pure white hair, and the clypeus is of a curious greyish-white color; the 
mandibles are entirely black, except a small yellowish apical stripe; the labrum is 
black, with a large yellowish-white spot. The maxillary palpi are normal for 
Alelissodes, with the last joint minute. I’he antennae are about 7mm. long, or 
rather more, with a rather stout flagellum, which is dark chestnut-red beneath. 
Tegulae black; nervures rufo-fuscous, wings perfectly hyaline, rather milky; 
seamd s. 7 / 1 . extre77iely la/ge, huger tha/i fi/st, broader than high, receiving the 
