June, 1908.J Rohwer : New Western TenthredinidjE. 113 



Type in the collection of the Colorado Agricultural College. 



Related to S. sericeus Nort., but may be distinguished by the 

 head and thorax being without white pile; clypeus not emarginate ; 

 mesotibiae pale throughout, etc. 



15. Lophyrus hypomelas, new species. 



Male. — Length 5.5 mm. Head about as wide as thorax, seen from above 

 narrowly transverse; slightly narrower behind eyes; ocelli in a curved line ; lower 

 ocellus in a narrow V-shaped basin, the walls of which are low ; two somewhat in- 

 distinct furrows running from base of each antenna to near occiput ; eyes remote from 

 mandibles; between ocelli and occiput is a transverse furrow; clypeus nearly trun- 

 cate ; labrum rounded at apex ; antennas iS-jointed, each joint with two hairy rays 

 beneath, the longest ones near the base. Head with fine dense punctures, deeper on 

 malar space (the lower inner orbit is somewhat wrinkled) ; face and clypeus with 

 white hair. Thorax shining, with fewer punctures than head, covered with short 

 dull white hair. Tibial spur short, stout, sharp, simple; claws with an obtuse inner 

 tooth between middle and apex. Costal cell wide, intercostal nervure incomplete, 

 placed a little more than width of cell proximally to basal ; basal nervure joining 

 subcostal at origin of cubitus ; first transverse cubitus incomplete ; first cubital cell 

 higher than broad ; lanceolate cell nearly closed back of the straight cross-nervure ; 

 hind wings with two discal cells ; lanceolate cell of hind wing petiolate at apex. 

 Abdomen smooth, shining; apical ventral segment broadly oval, with distinct, rather 

 sparse punctures. Color black ; labrum, apex of mandibles, extreme apex of abdo- 

 men dusky reddish ; venter very dark piceous ; tegula at extreme base luteous ; 

 palpi pallid ; legs except base of four posterior coxa, and all of anterior coxa', pale 

 luteous. Wings clear hyaline ; nervures and stigma brown. 



Habitat. — Ward, Boulder Co., Colo., alt. 9,217 ft., August 30, 

 1899 ("O.B."). Type in the collection of Entomological Depart- 

 ment of Colorado Agricultural College. 



This species is quite distinct from any of the American species, 

 being easily separated by the almost entirely black color and pale 

 luteous legs. 



16. Lophyrus gillettei, MacG. (M.S.). 



Female. — Length 6.5 mm. Head nearly as wide as thorax, deeply and densely 

 punctured, punctures on posterior orbits sparser ; ocelli in a low triangle ; lower ocel- 

 lus in a very shallow basin ; a distinct transverse furrow behind ocelli ; clypeus shal- 

 lowly emarginate ; labrum notched in middle ; malar space distinct but not as long 

 as in L. hypomelas Roh.; antenna 16-jointed, first joint of the flagellum a little longer 

 than the others, rays about twice as long as width of joints, longest on the middle 

 joints. Thorax above punctured like head ; pleura and pectus smooth and shining ; 

 tibial spurs simple, short, stout ; claws with an obtuse tooth in middle ; costal cell 

 broad, intercostal vein incomplete, about width of cell proximal to basal ; basal vein 

 joining subcostal a little proximal to origin of cubitus; first transverse cubitus incom- 

 plete ; first cubital cell higher than broad. Abdomen with a few punctures, 

 at apex ; sheath nearly concealed. Color black ; mandibles except tips pale piceous ; 



