HENRY J. FRANKLIN. 101 



Bombus lateralis wilniattce Cockerell, Ann. and Magaz. Nat. Hist., 



Ser. 8, X, 1912, p. 21, S . 

 Bombus guateinalensis Franklin, Trans. Amer. Ent. vSoc, XXXVIII, 

 Jan., 1912, pp. 196 and 197. 



Types. — The type of the queen caste, described here for 

 the first time, came from Ecuador and is deposited in the 

 collection of the United States National Museum. Cockerell's 

 worker type came from Antigua, Guatemala. Handlirsch's 

 specimen came from Guatemala. I have not seen Cockerell's 

 type. 



Pile rather short and fine. Malar space rather short. Head mostly 

 dark. Dorsum of thorax pale yellow, with a black interalar band. 

 Dorsum of abdomen with first segment yellow ; second mostly yellozv, 

 but black on the extreme sides ; third yellow in the middle and black on 

 the sides ; the remainder black. Corbicular fringes dark. 



Queen. Head. — Face mostly dark, but with a slight sprinkling of 

 pale yellow hairs above the bases of the antennas. Occiput with a 

 strong admixture of pale yellow hairs. Ventro-lateral portions of head 

 mostly dark. Malar space shorter than its width at apex, about one- 

 sixth as long as eye. Clypeus, for most part, delicately and rather 

 sparsely punctate. Third antennal segment longer than the fifth, the 

 fifth longer than the fourth. 



Thorax. — Dorsum yellow, with a weak and poorly defined black 

 interalar band, the yellow strongly encroaching on the black pile, 

 especially near the bases of the wings. Mesopleura yellow to the bases 

 of the legs. Metapleura mostly clothed with yellow, and sides of me- 

 dian segment with a large amount of yellow pile. 



Abdomen. — Dorsum : segment one yellow ; segment two about two- 

 thirds clothed with yellow pile, this yellow portion being all in one 

 area on the middle of the segment and extending from the front mar- 

 gin back to the hind one, the sides of this area converging posteriorly, 

 the sides of thesegment being black; segment three black, except for a 

 patch of yellow on the middle third, the sides of this patch converging 

 posteriorly, but not meeting ; segments four, five and six black. Venter 

 dark. 



Wings .—'R.a.'CciQX light, only moderately infuscate for a queen. 



Legs. — Anterior and middle pair dark. Hind coxae with consider- 

 able yellow hair on their outer sides ; hind trochanters mostly dark ; 

 hind femora with a noticeable amount of yellow pile on the lower side 

 of their very basal portions; corbicular fringes mostly dark. Hind 

 metatarsi with no long fringes. 



Worker. — Much like queen. Occiput sometimes entirely dark and 

 sometimes with yellow pile strongly predominant ; face sometimes en- 



TRANS. AM. ENT. SOC. , XXXIX. 



