94 AMERICAN HYMENOPTERA. 



Legs. — Coxae sometimes entirely dark, but often with more or less 

 yellow hair ; trochanters sometimes entirely dark, but usually with a 

 noticeable amount, and sometimes with a great deal, of yellow pile on 

 their lower sides ; femora usually with little or no light or yellow pile, 

 but the hind pair often with some yellow hair on the lower sides of 

 their basal portions and sometimes all three pairs with considerable 

 yellow on the lower sides of their basal halves ; tibiae dark, except the 

 hind fringes of the hind pair often more or less ferruginous-yellow, the 

 outer faces of the hind pair slightly convex and naked, except for a 

 few scattering hairs, and their hind fringes long, forming rather weak, 

 but distinct, corbiculae. Hind metatarsi with rather long hind fringes 

 toward their bases ; their outer faces flat or slightly concaved. 



Dimensions .—'L.Qn^'Oa. : queen, 16 mm. to 20 mm. ; worker, 12 mm. 

 to 15 mm. ; male, 9i mm. to 13 mm. Spread of wings: queen, 37 

 mm. to 41 mm. ; worker, 26 mm. to 31 mm. ; male, 21 mm. to 31 

 mm. Width of abdomen at second segment: queen, about 9 mm. ; 

 worker, 5 mm. to 7 mm. ; male, 4 mm. to 6 mm. 



I have here redescribed this species from six queens, three 

 workers and five males. 



l^ariatio7i. — The following variations, which seem distinct 

 enough for description, are before me. They grade com- 

 pletely (the gradations are before me) into the typical 

 forms above described. 



Color Variant 7.— Queen like the typical queen, but with the ferru- 

 ginous-red pile on the second and third dorsal abdominal segments 

 largely, though not entirely, replaced with black, the replacement on 

 the second segment consisting of a rather weak admixture of black 

 hairs with the red on the extreme sides of the segment, and on the 

 third segment consisting of a black area on the extreme sides, this area 

 narrowing and extending half-way to the middle line along the front 

 margin of the segment. One specimen from Olas de Moka, Depart- 

 ment Solola, Guatemala — 3,000 feet altitude. 



Color Variant 2.— Worker like the queen of Color Variant 1, but 

 with the black predominant on the sides of the second abdominal seg- 

 ment, there being only a moderately strong admixture of ferruginous- 

 red hairs with the black, and with the outer two-thirds of each red 

 patch on segment three completely replaced by black. One speci- 

 men from Olas de Moka, Department Solola, Guatemala — 3,000 feet 

 altitude. 



Male Color Variant 1. — Like typical male described above, but with 

 a weak admixture of black hairs with the ferruginous-red on the sides 

 of segment two and with a very strong admixture of black hairs on the 

 sides of segment three. One specimen from Olas de Moka, Depart- 

 ment Solola, Guatemala— 3,000 feet altitude. 



