1931 ] 
Ants of the Genus Macromischa 
179 
great honour to me to associate his name with this inter- 
esting species. The shells were collected by Bermudez in 
“Buenavista,” Remedies, Santa Clara Province, Cuba. 
The holotype is deposited in the M. C. Z. 
This small species is typically an Antillaemyrmex and 
similar in size and coloration to M. flavidula Wheeler and 
Mann from Hayti, but it is very easily separated by its 
sculpture, shape of petiolar node, shape of the head, posi- 
tion of eyes, etc. It can not be confused with any other 
species of this genus. 
Macromischa (Crcesomyrmex) aguayoi natenzoni 
subsp. nov. 
Worker. Length 3.6 mm. 
This subspecies is very closely related to the typical 
form, but differs by the punctations of the head, which are 
more abundant in the occipital region; by the less shiny 
surface of the head, and by the sculpture of the thorax. 
The thoracic rugae are longitudinally and regularly dis- 
posed both on sides and dorsum, instead of being regularly 
longitudinal on sides, coarse and irregularly longitudinal 
on pronotum, irregular on meso and epinotum and trans- 
verse on epinotal declivity, as occurs in the typical aguayoi. 
The color is blue as in the typical form the head being 
slightly greenish. 
Described from one specimen given to me by G. Naten- 
zon, who collected it on a limestone cliff at Guajaibon, the 
highest mountain in the province of Pinar del Rio, Cuba. 
The holotype is in the M. C. Z. 
Macromischa (Crcesomyrmex) barroi sp. nov. 
Worker. Length 4 mm. 
Head longer than broad, with rounded occipital corners. 
Eyes situated at the middle of the sides of the head. Man- 
dibles 5-toothed, with slightly convex external margin. 
Clypeus convex posteriorly and impressed at middle. 
Frontal carinae slightly divergent. Frontal area deeply 
