THE CANADIAN ENTOMOLOGIST. 319 



smooth, and has a longitudinal iin})ression, which has a narrow longitudinal 

 elevated portion ; on each side of this segment, near the lateral margin, 

 is a stout, short tooth shaped like a beak, and directed backward and 

 downward ; the pj'gidial area has converging sides, which are straight 

 throughout ; the ai:iex is rounded, and has the appearance of being slightly 

 emarginate. Black ; antennae and mandibles black, clypeus yellow, with 

 a broad lateral and narrow anterior and posterior borders black, the 

 yellow mark on the clypeus almost quadrate, the lower half being dilated 

 somewhat beyond the limits of the upper half, labrum with a yellow 

 spot occupying nearly all of the middle third of the basal two-thirds ; 

 tarsi and claws brown or brownish ; nervures nearly black. 



Type Acad. Nat. Sciences, Phila., Pa. 



Type locality, Corvallis, Oregon. 



Corvallis, ist May, 1897; loth May, 1898; 3rd June, 1899. One 

 specimen has the pale pubescence tinted with ochreous. 



Melissodes, Latr., and Synhahnia, Patt. 



? .  



Dorsum of thorax with ochreous hair, second abdominal segment entirely 



black, segments three and four with a distinct band of white pubes- 

 cence, that of the third interrupted in the middle, the fifth segment 

 with black pubescence, interrupted by white band at the 

 edge Synhalotiia lata. 



Thorax and abdomen much as in the preceding, but the second abdominal 

 segment with a broadly interrupted band, and the fifth segment without 

 a pale mark, entirely dark brown desponsiformis, Ckll., n. sp. 



Thorax with pale and dark hair, the abdomen with a distinct pale band 

 across the second segment i. 



I. Pale hairs of the body ochreous, the dark hairs of the dorsum dark 



brown, and not very conspicuous meiiuacha. 



Pale pubescence of the body white or whitish, the black hairs of the 

 dorsum very numerous and conspicuous menuacha Vernonensis. 



Antennae entirely black i. 



Antennae reddish beneath 2. 



I. 12 mm. long ; blacky with whitish pubescence ; labrum 



yellow nigricornis. 



8 mm. long ; black, with whitish pubescence ; labrum 



black microsticta., Ckll,, n. sp. 



