Descriptions and Records of Bees. 311 



witli black; inner margin broadly fuscous grey. Hind wings 

 below white mottled witli fuscous brown, forming a well- 

 marked subterminal shade ; discocellular shaded with fuscous ; 

 cilia black spotted with white from vein 4 to apex. 



Expanse 38 mm. 



Hah, Tuis. 



Belongs to Sect. II. 



XL. — Desci'iptions and Records of Bees. — XLVI. 

 By T. D. A. CocKERELL, University of Colorado. 



Trigona ziegleri may arum, subs p. n. 



Worker. — Agrees with Friese^s short account of T. ziegleri, 

 except that the hair of the thorax is pale ferruginous, and 

 the head is distinctly wider, fully 2^ mm. The size also is 

 a little greater, length fully 6 mm. Friese states that the 

 hind tibiae of ziegleri are black at apex, in mayarum about 

 the apical half is black, and the hind basitarsi are black on 

 outer side. Among the species known to me, T. mayarum 

 comes closest to T.jaty, Sm. ; but the latter is much smaller, 

 with the pleura mainly dark, and the yellow lateral face- 

 marks forming a much more acute angle above. Other 

 characters of mayarum are : mandibles with a little tooth at 

 inner corner, but otherwise unarmed ; scape very broadly 

 yellow in front ; flagellum clear ferruginous beneath, 

 rufo-piceous above ; yellow supraclypeal mark an equilateral 

 triangle; front dullish with fine short reddish hair, but 

 smooth and shining below the ocelli ; tegulse apricot-colour ; 

 wings with a faint orange tint ; abdomen apricot-colour, 

 shining. 



Hab. Quirigua, Guatemala (TV. P. Cocherelt). 



I expect that when this can be actually compared with 

 T. ziegleri it will be found to be a distinct species. An allied 

 but larger species is the Brazilian T. manni, Ckll. 



Trigona jatiformis, sp. n. 



Worker. — Length 4^ mm. 



Smooth and shining; head and thorax black with 

 pale markings ; abdomen clear ferruginous, with a rather 

 narrow black or blackish band along hind margin of 

 first dorsal segment ; labrum honey-colour ; mandibles 

 edentate, pallid (pellucid whitish) basally, rufous apically ; 



