1928] Some Cordia and Triplaris Insects 17 L 
2. Two submarginal cells, bounded by strong dark veins; an- 
terior tarsi (male) with a hollowed boat-shaped structure 
( $ would have ventral scopa) 
Megachile poculifera Cockerell 
Second submarginal cell bordered by pale or evanescent 
veip£; no such modification of anterior tarsi 3. 
3. Comparatively large robust bees; abdomen banded with, 
orange; head black 4. 
Small bees; abdomen not banded with orange or head red. 5. 
4. First abdominal segment with a continuous orange band. . . 
Melipona fulvipes triplaridis Cockerell. 
First abdominal segment with two orange spots 
Melipona orhignyi phenax CockerelL 
5. Head red, mainly black on vertex; scutellum red 
Trigona pectoralis panamensis CockerelL 
Head black 6. 
6. Clypeus with two reddish bars on disc; scape largely dark; 
larger species. (Three workers at Triplaris, Balboa, 
March 26) Trigona cupira F. Smith.. . . 
Clypeus without reddish bars on disc; scape red; smaller 
species (Eight workers at Triplaris , Balboa, March 26). . . 
N annoirigona testdceicornis (Lepeletier) 
Melipona fulvipes triplaridis Cockerell, 1925. 
Worker. A little larger than usual, with the orange ab- 
dominal bands broader. Triangular supraclypeal mark, line 
down middle of clypeus, stripe at each lower corner of clypeus 
and narrow band along orbits extending about half-way up 
front, all cream-color; scutellum entirely black except a yellow 
transverse line at apex; wings longer and more dusky; femora 
and tibiae, black; middle basitarsi black, and hind ones except 
apical corner; apex of abdomen with much white hair. Two 
workers; at Triplaris, Balboa, March 26-27. 
A distinct race of the wide-spread M . fulvipes Guerin, com- 
mon in Central America and the West Indies. 
