34 NEOTROPICAL BEES 



Svastra leucostoma new species 



Male. Very close to S. bornbijlans Holmberg, differing as follows: fulvous 

 hair of head and thorax not quite so red; hair at base of abdomen dull whitish, 

 not covering so much of first segment; a white hair-band at base of second 

 segment, but third and following segments entirely black; clypeus, labrum 

 and base of mandibles pale cream-color (lemon yellow in bombylans), the yel- 

 lowish color of clypeus with a rectangular incision on each side; scape in front 

 entirely black (yellow in bombylans); third antennal joint much shorter; 

 flagellum shorter, deep ferruginous beneath; nervures fuscous throughout; 

 second submarginal cell broader; hair of hind femora and middle tibiae black 

 in front, of hind tibiae black except a white streak at base behind, of middle 

 and hind tarsi black. The maxillary palpi are five-jointed, joints one and 

 two large and subequal in length, three much smaller, four and five minute. 



Carcarana, Argentina (Briiner 12). Tetralonia Jlavitarsis 

 Spinola has much longer antennae. 

 Svastra sapucacensis new species 



Female. Length, about 15 mm., anterior wing, 10.7 mm.; very robust, 

 black, including clypeus, labrum, tcgulae and legs; mandibles very broad, 

 simple, with a large orange patch on apical part; malar space linear; blade of 

 maxilla not much attenuated; paraglossae long and slender, fully as long as 

 labial palpi; maxillary palpi five-jointed, the last joint long, looking like two 

 coalesced, first three joints large and thick, the others narrow, measurements of 

 joints in microns (3.) 176, (4.) 80, (5.) about 160; labrum covered with choc- 

 olate-colored hair; clypeus verj^ strongly and densely punctured, with no me- 

 dian ridge or line; facial quadrangle about square; antennal joints five to ten 

 bright ferruginous beneath, eleven and twelve dusky reddish, but one to four 

 black; hair of face and round antennae white, but black on vertex, occiput and 

 cheeks posteriorly; mesothorax shining, strongly and closely punctured, but 

 scutellum more closely; area of metathorax extremely densely punctured, 

 with an impunctate median band; hair of upper border of prothorax, tubercles, 

 lateral margins of metathorax, a fringe along hind margin of scutellum, tuft 

 behind wings and sides of metathorax, white, but other parts of thorax, such 

 as mesopleura, have black hair; wings dusky translucent; nervures fuscous; 

 second submarginal cell nearly square, receiving first recurrent nervure beyond 

 middle but not near end; third submarginal cell very long; legs mainly with 

 black hair, but in certain lights the stiff hair of outer side of hind tibiae and 

 tarsi is brilliant shining silver, and the same occurs at base of middle tibiae; 

 abdomen broad, the first two segments finely and closely punctured, with little 

 hair, but the second with a fulvous apical band; segment three covered at base 

 and apex with bright fulvous hair; the remaining segments entirely covered 

 with very rich reddish-fulvous tomentum; apical plate pale browTi; venter 

 with bright ferruginous hair. 



Sapuca}^, Paragiia}-^, ]March (W. T. Foster). Not a typical 

 Svastra, but it falls better here than elsewhere. The venation 

 disagrees with Xenoglossa. There is a close general resemblance 

 to Xenoglossa ajyiculata (Cresson.) 



