HENRY J. FRANKLIN. 127 



dorsum of thorax and on scutellum with a slight admixture of black 

 hairs and not extending down on the sides, in front, to much below 

 the level of the bases of the wings ; black interalar band distinctly 

 more than half as wide as long, the tegulas scarcely dipping at all into 

 the yellow pile in front ; metanotum bearing no yellow pile ; dorsum 

 of abdomen with third and fourth segments entirely covered with yel- 

 low pile ; sixth segment having an admixture of ferruginous hairs, this 

 admixture being very slight on the middle of the segment, but very 

 strong on the extreme sides ; seventh segment clothed with entirely 

 ferruginous pile. Length about 15 mm. A single specimen from 

 Boquete, Chiriqui (3,500 feet altitude). 



Male Color Variant j. — Like Male Color Variant 2, but with only a 

 faint sprinkling of yellow hairs on the middle of the front part of the 

 dorsum of the thorax and on the scutellum ; face with very dark 

 cinereous pile throughout ; occiput entirely dark ; epipygium clothed 

 like that of typical male. Length about 16 mm. Two specimens 

 from Ecuador. 



Male Color Variant 4. — Like Male Color Variant 3, but with face 

 having cinereous pile about as in typical male and with thorax entirely 

 black. Length about 13 mm. A single specimen from Ecuador. 



Male Color Variant §. — Like Male Color Variant 4, but with head en- 

 tirely dark ; third dorsal abdominal segment clothed mostly with yel- 

 low pile, but with the yellow hair replaced by a thin clothing of short 

 black pile on its very basal portion ; fourth dorsal segment bearing 

 black pile on its apical portion, this being bordered in front by a nar- 

 row line of yellow hairs, the very basal portion of the segment being 

 thinly clothed with short black hairs as in the case of the third seg- 

 ment ; epipygium clothed with entirely ferruginous pile; venter almost 

 entirely dark, except hypopygium, this being fringed apically with 

 rather strongly ferruginous pile. Length about 16 mm. A single 

 specimen from Ecuador. 



Habitat. — Mexico (Orizaba, one male ; Rio Nautla, one 

 worker ; Otoyac, one worker ; Coatepec, one worker); Guate- 

 mala (Department of Solola, Olas de Moka, one male, three 

 workers and four queens); Chiriqui (Boquete, two workers 

 and two males); Ecuador (seven workers); Brazil (Minas 

 Geraes, one worker; Sao Paulo, one queen); Paraguay (Sa. 

 pca y, one queen and five workers); Mexico (one queen). 



There seems to be a slight variation in the length of the 

 malar space of the queen. 



This species seems to have its nearest ally in niexicanus. 

 The females may be separated from those of niexicanus by 



TRANS. AM. ENT. SOC. , XXXIX. 



