BEES IN BRITISH MUSEUM. 327 



T. atrifrons Sm., from Chile, is superficially so like certain Chilian 

 forms of Megachile (especially M. gasperinii Schlett.) that I found 

 a specimen placed in Megachile, with a label bearing a manuscript 

 name (apparently not of Smith) as a new species of the latter 

 genus! The pubescence is of a peculiar pale grey, black on pleura 

 below the wings, and so far as it alone goes, it agrees throughout 

 with the description of M. gasperinii. M. chilensis Spinola is also 

 superficially similar, but is smaller, and has the hair of pleura under 

 the wings pale grey. T. atrifrons has the mandibles slender and 

 simply with an orange mark on outer side; pulvilli very large; r. 

 ns. received near ends of second and third s. ins. ; marginal cell 

 rounded or obliquely subtruncate, tip away from costa ; claws with 

 an inner tooth. 



Tetraloriia dispar Sm., 9 (T.), from Peru, has the wings very 

 hairy ; first r. n. joins second s. m. near but not at its end ; scopa of 

 hind tibiae black, strongly plumose ; hair of pleura black ; of hind 

 part of mesothorax, scutellum, etc., fulvo-ferruginous ; abdomen 

 without hair bands. 



MACROGLOSSAPIS Ckll. 

 Maxillary palpi only 3 jointed ; first r. hi. meeting second t. c. ; 

 male with clypeus dark, but labrum light. Other characters like 

 Melissodes. I feel justified in referring here the following three 

 species, all described by Smith as Melissodes; in the case of M. 

 mcdesta and rubricata 1 have examined the maxillary palpi, and 

 found them 3 jointed, the first broadened basallv, the others succes- 

 sively narrower. M. terminata is obviously related to modesta, but 

 distinguished by the color of flagellum. 



Macroglossapis terminata Sm. % . 



The specimen is marked type, but the label on the pin states that 

 it is from Brazil, and it is a male, while the original description is 

 said to be of a ? from Venezuela. Clypeus black ; labium large 

 and yellow ; mandibles with no yellow spot; flagellum bright red 

 beneath, except at end (last 2? joints), where it becomes black. 



Macroglossapis modesta Sm. % (T.). 



Antennae extremely long, flagellum black ; clypeus wholly dark ; 

 labrum large, yellowish white. The third antenna! joint is ex- 

 tremely short, the fourth (long) is somewhat swollen. 



TBANS. AM. ENT. SOC. XXXI. AUGUST, 1905. 



