1931 ] Carabidse from North Carolina and Tennessee 161 
tioned, diligenda must be distinct from osculans, which has 
such a ridge. This, of course, is merely another example 
of Casey’s specious reasoning — its weakness becomes strik- 
ingly evident when it is pointed out that Casey, in his own 
original description of osculans , mentions only the depres- 
sion, not the ridge, of the $ last ventral. It may be added 
that the present species is the commonest and most widely 
distributed Monoferonia, and that its range is the most 
easily accessible, facts which increase the probability that 
it is what Chaudoir had in hand. 
3a. Pterostichus (Monoferonia) mancus mancus Lee. 
(1852, p. 234) 
Form as usual in the subgenus ; sides of prothorax 
oblique, sometimes just detectibly sinuate, before the pos- 
terior angles; the latter rounded at apex as in diligendus; 
outer basal stria of pronotum sometimes well marked and 
i /2 as long as inner stria, sometimes almost obsolete ; elytral 
striae less impressed than in any other Monoferonia except 
primus, intervals barely convex near apex, though more so 
anteriorly; striae not punctulate; last ventral of $ with 
a small, abrupt, rounded or sub-transverse, bubble-like 
tubercle set in the center of a very weak postmedian de- 
pressed area ; tubercle smaller but distinct in the single $ . 
Length 11.0-11.8 mm. Width 3. 9-4.4 mm. 
Known to me only from Leconte’s original series of three 
specimens ( $ $ ? ) from Georgia. A fourth ( $ ) specimen 
from the same locality, associated by Leconte, is Pt. ( Mono- 
feronia ) carolinus (see below). In order to avoid confu- 
sion, I have labeled and here designate Leconte’s first speci- 
men (a $ ) as the type of Pterostichus mancus Lee. Type 
number: Museum of Comparative Zoology 16439. 
3b. Pterostichus (Monoferonia) mancus plethorus 
subsp. nov. 
Precisely similar to typical mancus except that the 
striae of the elytra are deeply impressed, with the intervals 
