102 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Psen (Mimesa) floridana, new species. 



Entirely black and runs in with regularis or Icncopus in 

 Fox's tables, but is not related closely to these or to any North 

 American species described. In many ways the fauna of the 

 coast southeastern region of Florida is distinct from the rest 

 of the United States, but has related forms in the neighboring 

 islands. Dr. Ashmead had given this species the manuscript 

 name floridana, and it is used on that account. 



Female. Length 7.5 mm. Anterior margin of the clypeus rounded) 

 slightly irregular medially; front striato-punctate, vertex and posterior 

 orbits with small separate punctures; frontal carina not reaching the 

 clypeus; ocelli in a triangle, the distance between the lateral ones less 

 than the distance from one of them to the nearest eye margin; flagel ro- 

 bust, the first joint distinctly longer than the second ; dorsulum striato- 

 punctate; scutel with widely separated, distinct punctures, mesopleurae 

 shining, with small separated punctures; enclosure with a few strong 

 rugae, a smooth diamond-shaped area apically; metathorax above retic- 

 ulate, below and on the pleurae granular; petiole strongly trisulcate and 

 longer than the hind femora; second cubital narrowed more than a half 

 above; legs normal; pygidium narrowed apically, and with large sepa- 

 rate punctures. Entirely black except the whitish anterior tarsi; wings 

 dusky hyaline, iridescent, venation black. 



Type locality : Biscayne Bay, Florida. 

 Type: No. 12360, U. S. National Museum. 

 The sculpture of this species is very fine, and above descrip- 

 tion was made from magnification of 35 diameters. 



Psen (Mimesa) erythopoda, new species. 



Belongs to group Kohli of Fox and may be easily recog- 

 nized by the rufous four posterior femora, the striated enclos- 

 ure at the base of metathorax, and smooth mesopleurse. 



Female. Length 10 mm. Clypeus rather strongly convex, the ante- 

 rior margin broadly notched medially; mandibles broad and very robust: 

 deep furrows nearly encircling the lateral ocelli: head shining with a few 

 rather small punctures, the punctures closer in the postocellar area, 

 dorsulum with larger punctures, posteriorly these punctures become con. 

 fluent and irregular striae take the place of the punctures; scutellum 

 with well-separated punctures; mesoplurae and metapleurae shining, al- 

 most impunctate: the enclosure with strong, longitudinal strut; posterior 

 face of the metathorax rugoso-renticulate; petiole longer than the hind 

 femora; hind tibiae with short spines, its inner spur slightly flattened and 

 broadened medially; prygidum long, well defined, granular, a series of 

 punctures around the margin. Black, with the usual silvery pile; basal 



