ENTOMOLOGICAL NEWS. [Oct., '08 



the spine are yellow. The abdomen above is mostly yellow. 

 The pale markings on the head and thorax are large. Length 

 10 mm. Many male specimens from Delta, Colo., July 29, 

 1898. 



Microbembex monodonta argeiitifrons Cress. 



This subspecies was described as a distinct species from 

 Cuba by Mr. Cresson. 



BEMBIDULA Burm. 



This genus is not well represented in Colorado, there being 

 but two species, but an apparently new one is added here. It 

 is from New Mexico. The table is based on the males. 



Larger (about 18 mm.) ; postscutellum black ; spots on the abdominal 

 segments much wider at the sides, spots eight in number, 

 growing smaller towards apex quadrifasciata Say. 



Smaller (about 14 mm.) ; postscutellum marked with yellow ; spots of 

 abdomen not or but little wider at the sides, spot on all the 

 segments narrowly separated in the middle i. 



i. Clypeus black ; punctures of dorsulum close ; tibiae with a black 



stripe ; bands on abdomen rather narrow . . . ventralis Say. 



Clypeus with a large pale spot ; punctures of dorsulum larger and 



more separated ; tibiae entirely pale ; bands on the abdomen 



broader meliloti Roh., n. sp. 



Bembidula ventralis Say. 

 Female, Cope, Colo., Aug. 19, 1905 (S. A. Johnson). 



Bembidula quadrifasciata Say. 



Female without a label, but probably from Ft. Collins, 

 Colo., having been picked up by a student. 



Bembidula meliloti Roh., n. sp. . Length about 14 mm. ; clypeus 

 finely closely punctured, along the anterior margin are a few larger punc- 

 tures ; mandibles with two rather small teeth within ; front punctured 

 similar to clypeus ; first joint of the flagellum a little longer than 2 + 3 ; 

 apical joints slightly produced beneath ; apical joint obliquely truncate ; 

 dorsulum punctured with rather large punctures, which are separated 

 (not widely so, however) on the posterior part, the anterior part and 

 near tegulse they are closer ; scutellum punctured like posterior part of 

 dorsulum, if anything, more sparsely so ; mesopleura with large, sepa- 

 rate punctures ; metathorax sculptured like scutellum, or perhaps the 

 punctures are a little closer ; angles broadly, obtusely rounded ; first joint 

 of anterior tarsi emarginate at base beneath ; middle femora with a 

 strong, stout spine at base beneath ; abdomen distinctly reticulate, apical 



