514 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.47. 



STELOPOLYBIA ANGULATA (Fabricius). 



One worker from Antigua, one from Amatitlan, Guatemala. 

 This species is new to Guatemala. 



STELOPOLYBIA CYANNENSIS (Fabricius). 



Three workers from Antigua, Guatemala. 



EUMENES SANTA-ANNA Saussure. 



One female from Quirigua, Guatemala, on flowers of Centrosema 

 plumieri, collected February 11, 1912. 



PACHYODYNERUS NASIDENS (Latreille). 



Two females from Quirigua, Guatemala; one male from Gualan, 

 Guatemala, collected February 16, 1912, 



STENODYNERUS HUASTECUS Saussure. 



Two females from Quirigua, Guatemala, one on flowers of Zexmenia 

 mrgulata. This differs from description only in having the apical 

 margin of clypeus black. 



STENODYNERUS TOTONACUS Saussure. 



One female from Guatemala City, Guatemala. 



ALASTOROIDES MEXICANUS Saussure. 



One female collected at Quirigua, Guatemala. 



TRICHRYSIS TRIDENS Lepeletier. 



One specimen from Quirigua, Guatemala. 



DASYMUTILLA, species. 



One male from Quirigua, Guatemala. 



A small black species which does not seem to be described. 



TIPHIA TRICmOSOMA Cameron? 



One female from Quirigua, Guatemala; one male from Antigua, 

 Guatemala. 



This agrees in most points with the original description of 

 tricMosoma Cameron, but there are a few trivial differences; so it is 

 impossible to make the determination certain. 



CAMPSOMERIS DIVES (Provancher). 



Specimen from Gualan, Guatemala, on flowers of Titlionia diversi- 

 folia. 



CAMPSOMERIS TRIFASCIATA (Fabricius). 



Two males from Antigua, Guatemala. 



CAMPSOMERIS DORSATA (Fabricius). 



Three males from Gualan, Guatemala, one on flowers of Calojyogo- 

 nium coeruleum and one on flowers of Vernonia aschenhorniana, the 

 other without flower record; one male from Quirigua, Guatemala. 



PEPSIS AURANTICORNIS R. Lucas. 



A male and female from Quirigua, Guatemala. 



PEDINASPIS (PEDINASPIS) MARGARETELLA, new species. 



Male. — Length, 1 1 mm. Slender. Clypeus truncate apically, the 

 sides nearly parallel-sided, surface finely granular with one or two 

 large punctures interspread; malar space obsolete; inner margins of 

 the eyes converging to the clypeus, front seen from the side gently 

 rounding upward to the vertex; posterior margin of the head straight, 

 the cheeks broader than the posterior orbits above, rounding pos- 



