A REDESCRIPTION OF THE TYPES OF STRUMI- 
GENYS MANDIBULARIS F. SMITH, AND 
CEPHALOXYS CAPITATA F. SMITH 
By Horace Donisthorpe, F.Z.S., F.R.E.S. 
British Museum (Natural History), London 
As my old friend the late Professor W. M. Wheeler 
once said to me, the Genus Strumigenys F. Smith much 
requires to he revised. This revision, I understand, is 
now being undertaken by Mr. W. L. Brown, Jr., at the 
Biological Laboratories, Harvard University. As F. 
Smith’s descriptions of Strumigenys mandibularis and 
Cephaloxys ca pit at a are quite inadequate for modern re- 
quirements; and as the rules of the British Museum do 
not allow types to be sent out of the Museum, I decided 
to redescribe the types of these two species. This I 
have done in the following short paper, which I trust 
will be of use to Mr. Brown in his revision of the genus 
Strumigenys F. Smith. 
Strumigenys ( Strumigenys ) mandibularis F. Smith. 
2. Reddish brown, top of head blackish, the clypeus and 
base of lobes being reddish brown, first segment of gaster 
somewhat marked with black, eyes black, legs brownish 
yellow. Head triangular or cordate, narrowed in front, 
posterior border deeply excised, the excision being 
rounded, the posterior angles, consisting of two broad 
bluntly pointed lobes, separated by the excision, which are 
depressed above anteriorly, feebly longitudinally striate 
and very finely granulate, clothed with a number of very 
short and narrow adpressed glittering scale-like hairs ; 
mandibles not very long (0.6 mm.), stout, inner border 
above armed with two blunt teeth towards the apex, apex 
armed with three teeth, the two outside ones long and 
pointed, crossing each other when closed, the one be- 
tween them short and blunt; a row of blunt not very 
close spine-like outstanding hairs is arranged along the 
inner border and also between the apical teeth; clypeus 
large, rather flat, transverse anterior border rounded 
and furnished with a row of clubbed hairs, posterior bor- 
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