Sept., 1904] ViERECK AND COCKERELL : PhILANTHID.E. 135 



Cerceris garciana, new species. 



$ . Length about 9 mm.; similar to C. fernigiiiior, but differs as follows : yel- 

 low of prothorax interrupted in the middle by a black line ; tubercles black edged 

 with light ; pleura black ; scutellum black with a faint reddish spot on each side ; 

 metathorax black, with an oval yellow patch edged with reddish, on each side ; first 

 two abdominal segments black at base ; first segment decidedly shorter, and broader 

 in proportion to its length ; nervures ferruginous, second submarginal cell broader ; 

 second ventral abdominal segment with much black. 



Habitat. — Las Cruces, N. M., May 18 (Fabian Garcia). This 

 may represent only a race of the last. 



Cerceris populorum, new species. 



$ . Length about 10^ mm. ; allied to the last two, and having, like them, the 

 metathoracic enclosure smooth and shining. The general structure and punctuation 

 is also the same. Head black, with the face light yellow except the anterior margin 

 of the clypeus broadly and a large wedge-shaped mark on each side, which are black ; 

 mandibles ferruginous ; scape dark ferruginous with a small light yellow spot ; flagel- 

 lum mostly black or nearly so, ferruginous beneath at base, and sometimes above on 

 first two joints, and the extreme apex red ; thorax black, upper border of prothorax 

 broadly yellow, interrupted by black in the middle ; a reddish dot on tubercles, and 

 another just behind, or the latter may be absent ; scutellum and metathorax black, 

 but postscutellum yellow ; tegulce yellow ; wings as in C. ferruginior, except that the 

 second submarginal cell is larger, and the third transverse-cubital nervure has a dis- 

 tinct double curve ; legs red, tibiae yellow, tarsi dusky ferruginous, anterior femora 

 with a large black patch behind, middle femora with a small one ; posterior tibiae 

 with an apical blackish patch behind ; first abdominal segment shaped about as in 

 garciana, red, with an anterior black patch ; segments 2 to 6 yellow, broadly black 

 at base, the black on 2 to 4 much best developed in the middle ; apical plate dark 

 ferruginous, truncate, the angles spined ; venter black suffused with red, without yel- 

 low bands. 



Habitat. — Albuquerque, N. M. , June 30, between the town and 

 ^ the University (Cockerell, 3215 = type). Another (Cockerell, 2951) 

 May 8, on a young poplar tree, not in flower, on campus of Agricul- 

 tural College at Mesilla Park, N. M. On the same poplar tree, at the 

 same time, were taken Perilampiis hyaiiiius, 9 , Monodoritomenis nion- 

 tivagus, $ (both det. Ashm.) and a male Colletes. 



Cerceris femur-rubrum, new species. 



$ . Length about 9 mm.; black marked with cream-color or very light yellow, 

 no red marks on body ; legs red and cream-color ; surface of body shining, with 

 dense strong punctures. Head black, a small yellowish spot behind the top of each 

 eye; face up to level of antennae cream-color, this color further extending upwards as 

 a narrow band in the middle line, and broadly at the sides, terminating a short dis- 

 tance below the level of the middle ocellus ; mandibles whitish basally, ferruginous in 

 the middle, and black at apex ; middle of anterior margin of clypeus pointed ; lateral 



