136 
Psyche 
[September 
Paratrechina ( Nylanderia ) troglodytes Weber, 1934, Rev. 
Ent., Rio de Janeiro, 4: 58, fig. 7a, b, worker. Type 
loc. : near Casa Harvard, Soledad, Cienfuegos, Cuba. New 
synonymy. 
In addition to specimens collected at or near the two 
type localities by P. J. Darlington and E. 0. Wilson, Dar- 
lington took a series at the Sierra de Cobre, from 3000- 
3800 feet altitude, Oriente Prov., Cuba, showing that the 
species is both widespread and ecologically adaptable with- 
in the limits Cuba offers. — By William L. Brown, Jr., 
Museum of Comparative Zoology. 
The Status of the Ant Genus Microbolbos Donis- 
thorpe. — During a recent visit to the British Museum 
(Natural History) I was able to examine the holotype of 
the enigmatic species Microbolbos testaceus Donisthorpe, 
described from the Gold Coast (1948, Entomologist, 81: 
170-171) ). Microbolbos was found to be a junior synonym 
of Leptogenys Roger 1861 (s. 1.) (new synonymy). Donis- 
thorpe’s testaceus may stand as a valid species, however, 
distinguished from other Leptogenys by the following com- 
bination of characters: (1) hind claws with small, well 
separated teeth instead of combs, (2) mandibles with 3 
distinct teeth including the apical, (3) body size extremely 
small, only about that of a large Ponera, (4) body surface 
heavily shagreened, completely opaque, (5) color dark yel- 
lowish brown, (6) body covered with abundant, short, 
erect hairs. The absence of combs on the tarsal claws, or 
at least their reduction to separated teeth, forms an ex- 
ception to what is the principal diagnostic character of the 
Leptogenyini, but actually the African species Leptogenys 
arnoldi Forel and L. castanea Mayr show the same condi- 
tion, and the character grades through between the two 
extremes in the genus. Possession of mandibular teeth 
additional to the apical tooth is also unusual, but is shared 
with L. myops Emery and members of the L. processionalis 
group. — E. O. Wilson, Biological Laboratories, Harvard 
University. 
