Records of Dees, 111) 



punctinoil ; tcf^uhe rufo-fuscous. Wiu^s dusky, stifrina ami 

 neivmo.s ilark l)io\vii. L";fs very ilark leiMisli brown; spurs 

 fenu^fiiious. Aluloineu not appreciably coiistriotoil between 

 first an 1 second si';^inent.s ; first se<rnu'nt iinpunctate, tlie 

 followin>i; witli extroniely Hue puiicluros in tlie basal region ; 

 apical se<rnients with hoary jjubt'.sccnco. 



Meadow Valley, Mexico (('. //. /'. To to use ml). U.S. Nat. 

 Museum. 



In iny table in Ann. & Ma<r. Nat. Ilisf., Nov. r.»()7, this 

 runs to <S^. dichrous, Sniitii, from which it is readily known 

 by the impiinctate (Ir.st abdominal segment and other cha- 

 racters. ()n account of the thin hoary pubescence on apical 

 part of abdoujen it recalls S. pVosulus, jSiuitli, from Oaxaca, 

 but that lias the thorax closely punctured. 



Melissodes afbocincta, sp. n. 



? . — Length about 10 mm. 



Compact, black ; antenna beyond the fourth joint ferru-- 

 gin )us beneath ; eyes pale grey ; small joints of tarsi reddish; 

 teguluj piceous, posteriorly paler and re idish. Wings faintly 

 dusky, nervures and stigma dark brown; hind margins ot 

 abdominal segments (first narrowly, second broadly) 

 colourless ; pubescence greyish white, pale on vertex, but 

 disk of scutellnm with fuscous hair. Hair on outer side of 

 tibiie and tarsi suffused with reddish, on inner side of hinil 

 basitarsi bright ferruginous; hind tibial scopa long, loose, and 

 strongly plumose ; hind margins of abdominal segments 2 to i 

 with broad felt-like entire white hair-I)ands ; black parts of 

 first three segments exposed an<l shining, hardly punctured, 

 but that of fourth covered with very short fuscous hair ; fifth 

 segment covered with dark chocolate hair, paler at margin, 

 creamy-white at extreme sides; pygidial plate narr<)w ; meso- 

 ihorax and scutellum highly polished and sparsely punctured, 

 the mesothorax with a sliallow median longitudinal groove. 



Mexico (Baker collection, 2;52<)). U.S. Nat. Museum. 



This may be referable to Xenoglossodes ; I have not ven- 

 tured to extract the mouth-parts of the unique type. It 

 cerlaiidy closely resembles X. excurr<nis, Ckll., differing 

 prineipady by tlie white hind margins of abdominal segtnents. 

 In my table ot' Me/lssodes (I'jOtJ) it runs next t(^ M. martlnij 

 Ckll., which it does not resemble. 



Vlilvthrix helerochroa^ sp. n. 



? (type). — Lenirth about 10"5 mm. ; anterior wing 7'7 mm. 

 Black, with black ant! grevish-while hair ; liair at sides ui 



