A418 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
spines brownish; legs and tip of gaster ferruginous. Pubescence. 
white. 
Described from a single worker taken at Porto Velho. The speci- 
men on which Smith based his description was from Ega (Bates), so 
it is probable that the species extends over much of the Amazonian 
region. 
43. Anochetus (Stenomyrmex) emarginatus (Fabricius) subsp. 
rugosus Emery. 
Male. Length 7 mm. 
Head, excluding eyes, considerably longer than broad, rounded 
behind. Eyes very large, each three fourths as broad as the distance 
between them, convex, as long as sides of head. Ocelli very large and 
convex. Mandibles, short, feeble, straight, and without teeth. 
Clypeus truncate at anterior border; surface broadly foveolately 
depressed at sides. Antennae very long and slender; the first joint 
twice as long as the second; joints 3-11 cylindrical, subequal, very 
long. Thorax narrower than head. Promesonotum convex above. 
Epinotum in profile evenly rounded. Node longer than broad, in 
profile triangular, much longer than thick. Gaster long and slender, 
without a distinct constriction between the first and second segments. 
Legs long and slender. 
Body shining throughout, smooth, with extremely fine semierect 
pilosity, which is thickest on the antennae. Head and mandibles 
with a few coarser hairs. 
Color light testaceous; antennae, excepting first joint, fuscous; 
eyes black. Pilosity white. 
Described from several specimens taken at Manaos, from colonies 
which were nesting beneath the bases of living palm-tree leaves. 
Other colonies were found at Porto Velho beneath logs. The male is 
very active and takes flight readily. 
44. Odontomachus affinis Guérin subsp. mayi Mann. 
The single colony of this form was found living in parabiotic rela- 
tions with Dolichoderus debilis Emery var. rufescens Mann, an account 
of which has already been published. 
45. Odontomachus haematoda (Linné). 
Pard, Manaos, Porto Velho, and Camp 41, Madeira-Mamoré R. R. 
