52 PROCEEDIXGS OF THE NATIONAT^ MUSEUM. vol.61. 



alfaroi, eaeli in a separate cavity, and one of them with an incipien' 

 colony. , 



Coccidae live in the cavities and are tended by the ants, as first 

 recorded by Belt in his " Naturalist in Nicaragua." There were also, 

 in Honduras, dipterous pupae, probably Phoridae. in with the ants. 

 Those which I found had been parasitized by a small undetermined 

 Hymenopterous pupa? of which were found in the fly puparia. 



Subfamily FoRMiciNAE. 



ACROPYGA (EHIZOMYRMA) WHEELERI, new species. 



Worker. — Length, 1.50 mm. 



Head subrectangular. a little longer than broad and as broad in 

 front as behind, with very feebly convex sides, occipital border 

 shallowly excised at middle. Clypeus convex, truncate at anterior 

 border. Frontal area distinct and triangular. Mandibles with dis- 

 tinct basal and apical borders, blades with three strong, triangular 

 teeth, the apical the largest and the basal the smallest. Eyes small, 

 composed of one facet, situated at anterior third of sides of head. 

 Antennae 9-jointed, scapes attaining occipital border; first funicular 

 joint as long as the second and third together, joints 2-5 strongly 

 transverse, joints 6-7 about as long as broad, terminal joint com- 

 pressed, nearly as long as tlie three preceding joints together. 

 Thorax robust. Pronotum broader than long, broadest behind mid- 

 dle, sides rounded. Mesonotum longer than broad and about as 

 long as pronotum. Base of epinotum more than twice as broad as 

 long at middle, in profile about one-fourth as long as the sloping 

 declivity into wliich it gradually rounds. Scale well developed, 

 erect, less than half as long as the epinotal decli\nty and more than 

 half as broad, compressed anteroventrally and with flattened sur- 

 faces, dorsal border rounded. 



Shining, delicately shagreened. Hairs very fine, short and abun- 

 dant on head, longer and sparser on the body. 



Pale brownisli yellow throughout, except the mandiblar teeth, 

 which are brown. 



Hairs yellow. 



Female. — (deiilated) . Length, 2 mm. 



Head shorter than in worker. Second funicular joint longer than 

 broad and joints 4-5 less transverse than in the worker. Scale rather 

 thick in profile. 



Eyes and ocellar patch brown. 



The remainder similar to worker, with the usual sexual modifica- 

 tions. 



Type JocaJity. — Honduras: Lombardia. 



Cofypes.—Q^t. No. 24468, U.S.N.M. 



