426 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Color as in worker, but the head is more infuscated. 
Described from a female and several workers found in a twig lying 
on the ground at Para. 
69. Pseudomyrma gracilis (Fabricius). 
Many colonies of what seems to be the typical form of this species 
were taken from twigs at Manaos. The workers (7.5 mm. in length) 
are colored black, excepting a narrow border at the anterior of head, 
the clypeus, mandibles, the tips of the front, and intermediate femora 
and the tarsi, which are ferruginous. 
70. Pseudomyrma eacavata Mayr. 
Three workers from Manaos agree with specimens from Costa Rica 
received from Dr. Forel. 
71. Pseudomyrma laevigata F. Smith. 
One small colony found in a twig at Manaos. The specimens are 
yellow in color, without trace of maculation. 
72. Pseudomyrma mutilloides Emery. 
A worker each from Itacoatiara and Camp 39 Madeira-Mamoré 
Railroad. | 
73. Pseudomyrma subtilissima Emery subsp. tenuissema Emery. 
Taken at Natal and Maranhao. The colony from the latter locality 
was taken from beneath a loose piece of bark, quite an unusual situ- 
ation for Pseudomyrma. The type of P. tenuissima is from Matto 
Grosso. Emery records a specimen also from Cayenne. 
74. Pseudomyrma maculata F. Smith. 
One colony from Natal is very doubtfully referred to this species. 
The worker is 4 mm. in length. 
Head large, broadest in front, sides convex, posterior margin trun- 
cate, much broader than pronotum; antennae thickened at apex, 
