THE CANADIAN ENTOMOLOGIST. 279 



scLitellum ; facial (juadrangle somewhat broader than long ; hind spurs 

 pale ferruginous, not at all hooked. The scopa of the hind tibise is 

 slightly plumose only, as in T. Be/fragei. In my tables this runs (making 

 allowance for the large amount of white at sides of segment 5) to T. 

 Cordleyi \ if sought in the series with the apical hair reddish, it runs to 

 T. speciosa or Cordleyi. It differs thus from various species which might 

 be confused with it : 



1. From speciosa by its smaller size, silvery white (not yellow) hair 



of hind tibiae, different colour of hair of apex, gray hair of mesothorax, 

 etc. The pale bands on segments 2-4 are as in speciosa, except that that 

 on 2 is not appreciably narrowed in the middle, and that on 3 has its 

 upper edge straight (strongly concave laterally in speciosa). The bands 

 are also whiter. 



2. From Cordleyi by the whiter and much broader abdominal bands, 

 the upper lateral corners of the second segment being covered with 

 pubescence; whereas in Cordleyi they are broadly black. The hair of the 

 mesothorax is also quite differently coloured. 



3. From Belfragei by the much broader light bands of abdomen, and 

 the dullish gray aspect of the whole abdomen, instead of the clear black 

 and white of Belfragei. 



4. From Fowleri by the larger size, much broader band on second 

 abdominal segment, etc, 



5. From virgata by the hair of mesothorax, ornamentation of 

 abdomen, etc. 



Hab. — Steamboat Rock, Grand Coulee, Douglas County, Washing- 

 ton State, July 10, 1902. Received from Mr. Viereck, who received it 

 from Mr. A. L. Melander. 



Nomia Melajidj'i, n. sp. 

 ¥. — Length about i2)4 mm.; hind margins of abdominal segments 

 2 to 4 with very broad light emerald-green tegumentary bands ; first 

 segment with a little green at the hind corners. Closely allied to JV. 

 Foxii, D. T., but larger (though not nearly so large as N. Nortoiii)^ and 

 differing as follows : anterior part of mesothorax with very pale grayish- 

 ochreous hair, with black bristles intermixed; posterior part of mesothorax 

 mainly exposed, shining, impur.ctate, except for a ^o."^ large punctures 

 near the region of pubescence, and scattered scarcely visible rudiments of 



