THE CANADIAN ENTOMOLOGIST. 



about four long teeth ; abdomen green, disc of first segment occasionally 

 showing brownish ; apical margins of segments broadly testaceous; whole 

 abdomen, except discs of i and 2, covered with close appressed brownish- 

 white pubescence ; segment i practically impunctate, 2 with base rather 

 closely, finely punctate ; lateral margins and venter with long brownish- 

 white hairs ; venter brownish-testaceous. 



Length, 6-7 mm. 



Ten specimens, Ag. Coll., Mich., Oct. 4-1 1, 1893 (R. H. Wolcott). 



Most closely related to zephyrus^ Sm., but differs in its larger size, 

 stronger, more numerous ruga^ of metathorax, more coarse apparent 

 lineolation of mesothorax, much sparser punctuation of mesothorax, 

 lighter nervures, dark tibiae (not testaceous at base and apex), abdomen 

 more densely pubescent and covering more of surface (confined to latera' 

 patches on 2 and 3 in zephyr us). 



Halidus Pecosensis, n. sp., $• — Black, head and thorax clothed with 

 rather abundant griseous pubescence ; facial quadrangle wider than long ; 

 clypeus shiny, with large scattered punctures ; face sericeously roughened 

 with scattered very shallow oblique punctures below antennse, above 

 antennae becoming closely, finely punctate only in front of ocelli, but not 

 reaching orbital margins ; antennae entirely dark ; mesothorax sericeous, 

 closely, rather coarsely punctate ; median and parapsidal grooves obscure; 

 base of metathorax with close, coarse, irregular striae, not enclosed ; 

 truncation not entirely surrounded by a salient rim; legs black, hind inner 

 spur with three or four oblique almost obsolete serrations ; tegulse dark, 

 with a light centre ; wings subhyaline, nervures and stigma testaceous ; 

 abdomen shiny, finely and sparsely punctate, segment one more sparsely 

 so ; bases of segments two and three with large lateral hair patches almost 

 connected medially on three. 



Length, 6^ mm. 



Pecos, N. M., 7,200 feet, at flowers oi Holodiscus austraHs, July 21. 

 W. P. Cockerell collector. 



This species comes near the pectoralis group, but differs from any 

 of them in the much wider face ; it also differs from pectoralis by its 

 punctate first segment, hair patches on segments two and three, striae of 

 metathorax much finer; ixoxw pectoraloides by the obsolete parapsidal 

 grooves, first segment punctate; Uom pseudopectoralis by the first segment 

 punctate, closer punctures of mesothorax and the lighter nervures and 

 stigma. 



