OF WASHINGTON. 281 



junctures; membranule of posterior wings with a small tuberculiform 

 luteous process tipped with a thin brush of short hairs or bristles. 



9. Similar to the tf, but the abdomen shorter, little longer than the 

 wings, the latter broader. Tip of abdomen dark, spinous, the two cylin 

 drical inferior appendages clothed with long dark hairs. 



Length, <^ 44, 9 2 & ; alar expanse, $ 47, 9 5 2 > greatest width of an 

 terior wing, $ 5.7, 9 7 5 antenna, $ 9 4 mm - 



Flagstaff, July 4 (Barber and Schwarz : $c?2 ) ; Williams, 

 July 5 to 27 (Barber and Schwarz : 6 cTcT, 7 9 ?). 



7V/te. No. 6SS6, U. S. National Museum. 



The type specimen is a c? from Flagstaff. This species resem 

 bles ./?. sackeni in the markings of the abdomen, shape of the cT 

 appendages and form and markings of the wings. It presents 

 many differences, however, among which are: its larger size, 

 longer c? abdomen, shorter appendages, more slender and darker 

 thorax, much longer tibial spurs and more heavily and uniformly 

 clouded transverse wing veins. Mr. Barber reports that the speci 

 mens, five in number, collected on July 9, were all found in the 

 early morning under one stone. 



Brachynemurus yavapai, n. sp. 



9- Slender, fuscous, with black and white hairs. Face luteous, pice- 

 ous above and clouded throughout; inter-antennal mark long, deeply 

 notched, bordering the antennae in front and sending a median line to the 

 clvpeus. Lab rum clouded with piceous, little more than twice as wide as 

 long, very slightly emarginate. Palpi piceous, the articulations pale; 

 labials slightly the longer, the third joint stout fusiform, tip fine. Upder 

 parts of head luteous, the maxillary palpigers piceous at base, elbow and 

 apex, the mentum and labial palpigers tinged or clouded with the same. 

 Antennae somewhat shorter than head and thorax, clavate, luteous below; 

 above fuscous, with luteous articulations; joints i and 2 piceous with pale 

 articulations, i set in a luteous ring. Vertex luteous, the posterior third 

 or more and the longitudinal furrow piceous; in front of this a transverse 

 light brown band. 



Prothorax luteous, with a single large fuscous mark formed by the join 

 ing of a broad middorsal stripe, extending from base to apex, with two 

 lateral stripes each side; inner lateral stripe reaching forward only to the 

 transverse furrow, the outer one still shorter; lateral margins with a small 

 fuscous spot at extreme base; beneath are two fuscous spots at sides near 

 base. Anterior lobe of mesothorax fuscous, a luteous spot each side; lat 

 eral lobes principally luteous, a U-shaped marking whose branches point 

 backward springs from the fuscous anterior portion, a shining fuscous dot 

 behind outer branch of the U; posterior angles fuscous, margins luteous; 

 posterior lobe luteous, two approximate middorsal stripes on anterior 

 half and a median dot on hind margin fuscous. Metathorax fuscous, an 

 inner spot on each lateral lobe, and all of the posterior lobe except a 

 median dot on hind margin, luteous. Sides and sterna varied with lute 

 ous. 



