from the State of Vera Cruz. 287 



cence; mandibles tridentate. Thorax dullish, very closely 

 punctured, more sparsely on metathorax, and not at all on 

 the dull enclosure. The surface of the mesothorax, between 

 the punctures, appears to be microscopically tessellate. 

 Pubescence of dorsum of thorax black and very sparse ; an- 

 terior mar/jins of meso- and metathorax with a narrow band 

 of dense white hairs, but none between scutellum and meso- 

 thorax. Sides of metathorax with a w^hite fringe. A spot 

 of dense white pubescence above the tegul^. Pleura with 

 thin dirty white pubescence. Tegul^e piceous. Wings pale 

 fuliginous, the costa broadly dark fuliginous, shining viola- 

 ceous ; nervures black. Legs with short sparse whitish 

 pubescence ; tarsi with shining rufous pubescence on inner 

 side. Claws simple. Abdomen tapering to a point, conical, 

 shining, sparsely punctured, thinly pale pruinose, the first 

 two segments with extremely narrow white hair-bands, first 

 and last segments with a few black hairs. Ventral scopa 

 yellowish white, mixed with black at tip ; it cannot be well 

 seen, as it is carrying a great mass of orange pollen. 



San Eafael, March 18 j one, on plant no. 4. 



At first I thought this must be the female of M. coeliox- 

 ot'des, Cresson, although that has fulvo-ferruginous legs and 

 is not closely punctured. But Smith describes a female from 

 Orizaba as 31. irritans which is like jjerpunctata, but has the 

 thorax " finely and not very closely punctured." Thus, if 

 there is any synonymy involved, it must be irritans, not 

 perpunctata, that is the female of codioxoides. 



(5) Megachile rJiodopus, sp. n. 



?. Length 13 millim. Black, legs and antennse red. 

 Head ordinary; mandibles dark ferruginous except their 

 ends, which are 3-dentate, outer surface of mandibles with 

 two strong grooves. Pubescence of head and thorax thin 

 and short, ochraceous above, greyish white below and on 

 sides ; face with greyish-white pubescence, not dense. 

 Clypeus and front closely punctured ; scape punctured ; first 

 joint of flagellum not much longer than second. Mesothorax 

 very closely punctured, the punctures fairly large ; meta- 

 thorax strongly punctured, the enclosure very distinct, dull, 

 minutely granular. Tegulse shining fulvous. Wings hyaline, 

 •with a strong yellowish-fulvous tinge, nervures fulvous. 

 Anterior trochanters largely black ; anterior femora with a 

 black stripe on outer side. Pubescence of legs sparse and 

 white, becoming fulvescent on tarsi, rufous on inner side of 

 basal joint of tarsi. Basal joint of hind tarsi broad and flat. 



