88 Psyche [Sept.-Dee. 
Described from 6 workers in the Museum of Comparative 
Zoology, labelled Cotype 26814. 
Pseudomyrma laevigata subsp. insularis subsp. nov. 
Worker. 
Length 6.5-7 mm. Differs from the type by smaller size (type 
8.5 mm.) ; character of the pilosity (long and black in the type, 
more sparse, shorter, and of golden color in the new subspecies) ; 
the shape of the prothorax (broad and flat above in the type, 
narrow and slightly curved in insularis ) ; the coloration (bright 
yellow in the type, reddish yellow in the subspecies). The dif- 
ferences between the new subspecies and the remaining forms 
of P. laevigata are given in the key. 
Type locality: Barro Colorado Island, Panama. 
Holotype No. 81, Haskins Collection. 
Pseudomyrma latinoda var. coronata var. nov. 
Worker. 
Length 5.5-6 mm. Cotype 20542, Harvard Collection, 19 
specimens. Tarsi and head testaceous-yellow. On the vertex 
a brown spot of variable shape and size; rest of the body dark 
brown. Head a little longer than broad, with very convex sides 
and slightly concave posterior border. The eyes are in the mid- 
dle, very flat, and occupy less than half the sides of the head. 
Mandibles heavily striated, with two large apical and three 
smaller teeth. Clypeus with a short, broad, straight lobe. Fu- 
niculi reach the middle of the head. Head very shiny, with 
abundant small foveoli. Prothorax broader than its length in 
the midline, submarginate on the sides. Mesothorax broader 
than long, with blunt angle on the sides. Epinotum longer than 
broad, very convex transversely. Petiole with a trapezoidal node, 
which is broader behind than long. Postpetiole bell shaped, 
much broader than long. In profile the pro- and meso-thorax 
form a convex line above, which is separated by a deep depres- 
sion from the very convex epinotum. The node in profile longer 
than high, subtriangular, with rounded summit. 
The whole body shiny; thorax and petiole finely punctate, 
postpetiole and gaster smooth; with relatively abundant erect 
hairs especially on the pedicel and moderately abundant pubes- 
cence, more dense on the thorax and gaster. The coxae and 
femora are infuscated. 
Type locality: Mouth of Jerume, British Guiana. 
