304 SUPPLEMENT. 



The third joint of the antennae is one-fourth longer than the first two joints together; 

 the style is about equal in length to the second joint. S. truquii was noticed by Osten 

 Sacken under the genus Stenopogon (antea, p. 169). 



2. Scleropogon lugubris, sp. n. 



$ . Antenna black, the two basal joints in part reddish ; third joint a little longer than the first two together ; 

 style nearly half as long as the third joint. Front dark oehraceous, with black bristles ; the stout bristles 

 back of the vertex also black. Face yellowish-pollinose above, white below ; bristles wholly white ; hair 

 or bristles of the occiput, except those above, white. Mesonotum with two narrow opaque black stripes 

 in the middle, narrowly separated by a brown line, and dilated sagittally at the front end ; on either side 

 the greyish colouring two large brown spots are visible, forming a sort of stripe, broad behind ; bristles 

 for the most part black, those on the sides and behind, and on the margin of the scutellum, white. 

 Pleurse greyish-yellow-pollinose. Abdomen black, subopaque, the distal segments somewhat shining; 

 covered, more thickly on the anterior part, with greyish dust ; on the sides of the segments, scarcely 

 visible from above, there is a large, dark brown, opaque spot. Legs black, with white hair and black and 

 white bristles ; the upperside of the front femora and the inner side of the front tibiae and tarsi red : this 

 red colour is probably more or less variable in extent. "Wings cinereous-hyaline, the broad distal margin 

 in front and behind tinged with blackish ; first and fourth posterior cells closed. Length 18 millim. 



Hab. Mexico, Dos Arroyos in Guerrero (11. H. Smith). 



One female. A second, male, specimen (from Tepetlapa) seems to agree in all 

 respects, except in size (length 11 millim.) and in the more distinctly marked lateral 

 stripes of the mesonotum. 



DIZOMAS (p. 169). 



2. Dizonias phoenicurus. 



Dizonias phoenicurus, Jjoew, Centur. vii. no. 53 \ 



Dizonias ?, O. Sacken, antea, p. 170 (c?) 2 . 



Hab. Mexico 2 , Guadalajara and San Bias in Jalisco (Schumann), Tamaulipas x . 



Four males. In one specimen the first two segments of the abdomen are black, the 

 remainder red ; in two others the third segment has a large black triangle, one of 

 these having the second segment also in part red. It is evident therefore that the 

 coloration is in a measure variable. In two of the examples the second and third 

 segments have rather feebly marked spots of whitish dust on the sides ; in the others 

 no spots are visible. 



3. Dizonias lucasi. 



Dasypogon lucasi, Bellardi, Saggio etc. ii. p. 81, t. 1. fig. 7 1 . 



Hab. Mexico 1 , Jalisco, San Bias, and Guadalajara in Jalisco (Schumann). 



Five males. This species, noticed by Osten Sacken under sp. no. 2 (antea, p. 170), 

 is nearly related to I), phoenicurus, but is easily distinguished by the white hair and 

 bristles of the head and thorax. The colour and markings of the abdomen seem to 

 vary in the same way. 



