100 
William Morton Wheeler 
with a wihte film. When the block of amber was trimmed 
and polished most of the joints of the antennoe were unfortunately 
ent away. The mandibles, however, are so nnlike those of any other 
Dolichoderince, that I have had to make it the type of a new genns 
and new tribe. The thorax and petiole recall these parts in Paraneuretus 
bnt the resemblance in other respects seems to be merely superficial. 
The mandibles would seem to be adepted to some peculiar function, 
and their resemblance to the mandibles of Polyergus and Strongylo- 
gnathus snggests that Pityomyrmex tornquisti may have been a parasitic 
or slave-making ant. 
Subfamily Camponotince. 
Tribe Plagiolepidini Forel. 
Genus Plagiolepis Mayr. 
Plagiolepis succini Ern. Andre. 
Plagiolepis succini Ern. Andre, Bull. Soc. Zool. France, XX, 1895, p. 81, 83, 
Handlirsch, Foss. Insekt. 1908, p. 859. 
Worker. Length 4 mm. 
Large, brownish black, with short, erect hairs. Antennae stout, 
funicle clavate. Thorax constricted between the meso- and epinotum. 
Legs long and slender. Scape proportionally short, not surpassing the 
posterior border of the head ; funiculus robust, very strongly and 
gradually thickened from the base towards the extremity, joints 3 — 4 
transverse, the others about as broad as long, except the first, which 
is as long as the two following joints together, and the last, which is 
a little longer than the two preceding joints. Head of the same form 
as in P. custodiens Smith, which lives today in South Africa; eyes 
rather large and situated near the middle of the sides of the head. 
Thorax with the pro-mesonotal suture welimarked and rather strongly 
constricted above between the meso- and epinotum. Petiolar node 
moderately thick, inclined forward, its superior border very slightly 
excised. Legs rather long, slender. Body brownish black, with scattered, 
short, erect hairs, which are more oblique on the antennae and legs. 
Sculpture not apparent. 
Andre’s description here translated is based on a single specimen. 
I have not been able to recognize the species in any of the material 
submitted to me. It is decidedly larger than any other Plagiolepis 
described from the amber and its close resemblance to the South 
African P. custodiens would seem to indicate that it may be a copal insect. 
