74 AMERKJAN HYMENOPTERA. 



Xenogloi^sa pruinosa (Say). 



Arizoua, Aug., 1902 (Snow, 425). 

 Xeiioglossa patricia angustior Ckll. 



Congress Junction, Arizona, July (Snow, 1008). 



DASIAPIS Ckll. 



Dasiapis ochracea Ckll. 



Oak Creek Canon, Arizona (Snoiv, 2005). 



9IEL,I^iSODi:»i and allies. 

 MALES. 



Group A. — Clypeus black. 

 Series 1. — Labrum yellow or cream color = Macroglossapis Ckll. 

 Labrum cream color; antennse very long, flagellum fulvous beneath; thorax 

 with fulvous pubescence, black anteriorly ; abdomen shining black, 

 •without bands; clypeus longitudinally carinate; maxillary palpi 



3-jointcd Macroglossapis montezunia (Cress.). 



(The 9 of M. montezuma has the pubescence of thorax above fulvo-ferrugin- 

 ous, black in front like % ; of pleura also black ; clypeus carinate; pu- 

 bescence of legs black, ferruginous on inner side of anterior tarsi.) 



Melissodes albilabris Cress., also falls here, and is to be called 

 Macroglossapis albilabris; the type shows the 3-jointed maxillary 

 palpi well. This species has the hind margins of the abdominal 

 segments very broadly yellowish, with shining golden hairs — a very 

 pretty effect. 



The type of Macroglossapis is oribazi Rads., which Friese says is 

 a synonym of analis (Lep.) ; other species have been described by 

 Smith. The following characters are useful for the separation of 

 the males of this genus. 



M. terminata (Sm.) Hair of thorax above cinereous ; labrum 

 yellow. 



M. albilabris (Cress.) Hair of thorax above with a band of 

 fuscous across anterior part, and some fuscous on scutellum. 



M. montezuma (Cress.) Hair of thorax fulvous, black in front ; 

 labrum yellowish white. 



31. modesta (Sm.) Hair of thorax above wholly pale fulvous ; 

 labrum yellowish-white. 



M. analis (Lep.) Hair of thorax whitish ; but if oribazi is the 

 same, it is black in the $ . 



M. rubricata (Sm.) Male unknown, l)ut no doubt has a reddish 

 abdomen, like the ? . 



