ENTOMOLOGICAL SECTION. XXIU 



familiar objects upon the far western plains. They prove to be h;irvest- 

 ing ants, quantities of seeds being found in their granaries. They 

 closely resemble in structure and habits their congener F. harhatus, 

 the Agricultural Ant of Texas. There are however, some interesting 

 variations of habit. 



Mr. E. T. Cresson exhibited specimens of five new species belong- 

 ing to the hymenopterous genus Encercen's, and described them as 

 follows : 



Eiicerceris fulviceps. — 9. — Head unusually large, widened beneath, 

 closely punctured, fulvo-ferruginous, sides of face, prominence between an- 

 tennae, and clypeus pale yellow; clypeus broad, very short, produced medially 

 into a subacute tooth, black at tip; apical half of mandibles black; antennae 

 black, four basal joints fulvous; thorax black, closely punctured, tegulae, 

 seutellum and disk of metathorax fulvous; posterior margin of prothorax, 

 dot on sides of seutellum, line on postscutellum, an oblong mark on sides of 

 metathorax and a slender oblique line on each side of basal enclosed space, 

 yellow; the latter transversely or slightly obliquely striated; wings fuscous, 

 darker on apical costal margin, stigma and costal nervure fulvous; legs 

 entirely fulvous; abdomen closely punctured, coarsely so on apical margin of 

 the segments, a broad pale yellow band on segments 1 — 4 above, that on the 

 first narrower and subinterrupted, apical segment blackish at tip: venter 

 immaculate. Length .60 inch. 

 Hab. — New Mexico. 



Eucerceris rubripes. — % . — Black, coarselj' punctured, shining; broad 

 stripe on sides of face narrowed above, stripe between antennae reaching the 

 lower ocellus, and the clypeus, lemon-yellow; mandibles except tips, large 

 spot on cheeks behind summit of eyes, and seven basal joints of antennae, 

 fulvous; posterior margin of prothorax, tubercles, spot behind, subinterrupted 

 line at base of seutellum, line on postscutellum, and spot on tegulae, white; 

 an indistinct ferruginous line on sides of metathorax; seutellum with a few 

 large scattered punctures, basal enclosed space of metathorax with ill-de6ned 

 transverse striae; wings subhyaline, the apical costal margin rather broadly 

 violaceous black, before stigma it is narrower and yellowish ; stigma and costal 

 nervure fulvous; legs fulvous, spot on anterior femora beneath and line on the 

 four anterior tibiae before, yellow ; abdomen sparsely punctured, segments 2—5 

 with a transverse median impressed line, a broad yellow band on segments one 

 and two, a narrow yellow band at apex of segments 3 — 6 suddenly dilated on 

 sides; apical segment and bands on venter fulvous, several yellow spots on 

 segments three and four beneath. Length .50 inch. 

 Hab. — Colorado. H. K. Morrison. 



Eucerceris elegaiis. — % . — Face nearly to summit of eyes and clypeua 

 cream-white; cheeks and mandibles except tips, fulvous; vertex, line above 

 insertion of each antenna, and tips of mandibles, black; antennae black, five 

 or six basal joints fulvous; head large, rather closely punctured ; thorax black, 

 pro- and mesothorax and seutellum sparsely and coarsely punctured, shining; 

 posterior margin of prothorax, four spots on anterior margin of mesothorax, 

 the two middle ones bUialler and oblique, broad baud ut base of seutellum, line 



