OF WASHINGTON, VOLUME XIII, 1911. 15 



a narrow line, minutely punctured. Scutellum about four times broader 

 than long, separated from the mesonotum by a very deep suture, its 

 hinder margin sharp, overlapping considerably the median segment. 

 Metanotum scarcely visible at the sides under the scutellum. Median 

 segment coarsely punctured only at its base. Mesopleura anteriorly 

 truncate, punctured like the rest. 



Abdomen short, not longer than head + thorax, with large punctures 

 on the sides of the first two body segments, decressing in size rapidly 

 towards the middle and the apex. An indistinct ferruginous stain at 

 the sides of first and second segments. A small linear yellow spot at 

 each side of the third; the basal half of the fourth yellow and its apical 

 half fuscous; the fifth with basal two-thirds yellow and the apical third 

 ferruginous; the sixth segment yellow, with a very small fuscous apical 

 spot. The pollen brush is yellowish white. 



Wings dark, especially at the apex of the median cell and in the 

 cubital cells, the radial cell almost black; the nervures and stigma deep 

 fuscous; the transverse discoidal veins terminating behind the angles 

 of the second cubital cell at equal distance. 



Legs entirely dark, clothed with a thin griseous pubescence; that on 

 the metatarsi dense, stouter, and reddish brown. Pulvilli short but 

 distinct. 



Length a little over 7 mm. ; width of abdomen '2.5 mm. 



A second specimen has no yellow line along the hinder margin of the 

 head and the yellow spots between the insertion of the antennae are 

 scarcely distinguishable ; it has, however, an additional small yellow 

 spot at each side of the clypeus; its length is 7.5 mm. 



Paraguay, Tacuru-pucu, April 29, 1909 (type), and Puerto 

 Bertoui, Alto Parana. Taken in flowers of Vernotiia sp. 

 (Compositae). 



I considered this as Dianthidium megachiloides (Holrubg ) 

 (=Anthodioctes megachiloides} but the description, imperfect 

 as it is, does not agree with my specimens in some important 

 points. It is also near D. indescriptum (D. T.) (=Anthidium 

 cogiiatttm F. Smith nee Cresson), but the abdomen of the 

 atter is "pubescent, giving it a velvety blackness" and " the 

 scutellum is orange-yellow," while D. reniouicr has the 

 abdomen nude and the scutellum black. 



AN ARCTIAN NEW TO OUR FAUNA. 



Mr. R. A. Vickery has collected Halisidota aiitiulofa 

 Walker at Brownville, Texas. The moth is common in 

 Mexico and it is not surprising that it should appear at Browns- 

 ville, where so many southern forms occur. 



HAKRISON G. DYAK. 



