1939] 
Notes on Strumigenys 
107 
rounded plate; mesoepinotal suture distinct, slightly con- 
stricted. Node of petiole in profile rather strongly convex 
above. 
Head, thorax and petiole reticulate-punctate, subopaque, 
the sculpture on the clypeus decidedly finer than on the rest 
of the head; frontal area, sides of the mesonotum, meso- 
and metapleura, dorsum of the postpetiole and gaster smooth 
and shining, first gastric segment with numerous coarse 
longitudinal striae on the basal 1/3- 
Hairs on the clypeus numerous, moderately long, some- 
what irregular, erect, the tips spatulate and curved horizon- 
tally, numbering about 30 on the dorsal surface, the border 
with 10 or 12 .similar hairs curved anteriorly, the whole 
effect giving the clypeus a woolly appearance when viewed 
under low magnification. Pilosity of the rest of the head 
sparser, more curved and narrowly squamo.se; across the 
posterior border of the head is a transverse row of 4 evenly 
spaced, very long, thin, erect hairs ; although 1 or 2 of these 
is sometimes missing, the position of the others is not al- 
tered. Antennal scapes with 5 or 6 irregular, moderately 
long, erect, narrow, squamose hairs on the external border, 
4 or 5 similar but much shorter hairs on the dorsal surfaces. 
Thorax with sparse, moderately long, clavate, subappressed 
hairs and 1 or 2 much longer erect, thin hairs confined prin- 
cipally to the dorsum of the mesonotum. Node of petiole 
with numerous rather short, curved, blunt or clavate hairs. 
Postpetiole and gaster with very few long, slender, nearly 
straight hairs. 
Color ferruginous ; gaster darker. 
Type locality: Jackson, Ohio. 
Described from 3 workers found under a board and pieces 
of slate in a shaded spot in a backyard in Jackson. We did 
not succeed in locating the colony. It may be noted that of 
the 4 species of Strumigenys ( pergandei , rostrata, reflex a, 
abdita ) found in this yard, 2 were undescribed. 
In order to facilitate the separation of the 6 new forms 
described above, we have modified Smith’s key 5 to include 
5 Smith, M. R., 1931, Revision of the Genus Strumigenys of America 
North of Mexico, Based on a Study of the Workers, Ann. Ent. Soc. 
Amer., 24, pp. 686-710. 
