1970] 
Barr — Platynella 
213 
smooth tarsi (Casey, 1920, pp. 24-26) except to note that they are 
apparently valid species and probably belong in Platynella rather 
than in some other subgenus. Three of them — logicus , morelosensis , 
and infidus — were described from Huitzilac (= “Tres Marias”), 
Morelos, and were presumably collected by Wickham at the same 
time he collected district, us. These three species closely resemble 
districtus in superficial appearance and body proportions. Platynella 
baroni Casey, a more aberrant species, was described from “Guer- 
rero” without indication of the precise locality. The species with 
strigose tarsi may be differentiated by the following key. 
Key to Species of Agonum ( Platynella ) with Strigose Tarsi 
1. Pronotum nearly as long as wide; third interval of elytron 
with four minute punctures 2 
Pronotum 3/4 as long as wide; third interval of elytron with 
two minute punctures against 2nd stria in apical third 
tolucense Straneo 
2(1). Eye diameter less than length of scape; pronotum margins 
strongly reflexed ; apices of elytra angulate 
district um Casey 
Eye diameter and scape length subequal; pronotum margins 
moderately reflexed; apices of elytra less produced and not 
sharply angulate montezumae Bates 
Agonum ( Platynella ) districtum (Casey), new combination 
Figures 2A, 2B, 5 
Anchomenus ( Platynella ) districtus Casey, 1920, p. 24, type from Tres 
Marias (=Huitzilac) , Morelos, Mexico, in U. S. National Museum. 
Bolivaridius ovatellus Straneo, 1957, p. 82; type from Zempoala National 
Park, Morelos (Huitzilac township), Mexico, in coll. Bolivar, Instituto 
Politecnico, Mexico, new synonymy. 
Length of five specimens 11.3-12.1 mm; one of Straneo’s specimens 
was recorded as 14 mm long. Color dark ferruginous, dull shining. 
Pronotum more than 0.9 as long as wide, greatest width in apical 
fourth, very shallowly sinuate in basal fourth, margins strongly re- 
flexed; with a pair of anterior marginal setae, the posterior absent in 
some specimens but probably merely broken off. Eyes small, their 
diameter less than the length of the scape; tempora behind the eyes 
longer than eye diameter. Elytra with four discal punctures, apices 
angulate, sharper than in the two following species. Aedeagus of a 
paratype of ovatellus 1.85 mm long, basal bulb rather long with 
moderately prominent keel, median lobe arcuate, apex slender and 
produced. 
