ANTHRAX. 121 



When in the 'Western Diptera,' p. 237, I compared A. paradoxa to Dipalta 

 serpentina, I was under the erroneous impression that the spot figured by Jaennicke 

 in the middle of the first submarginal cell represented a cross-vein. A. paradoxa is, 

 however, an Anthrax, closely allied to A. edititia; Dipalta serpentina has quite a 

 different appearance, comparatively larger wings, and is nearer to Exoprosopa. 



Van der Wulp (Tijdschr. &c. xxi. p. 189) records specimens from the Argentine 

 Eepublic, which he identifies with A. paradoxa, Jaenn., at the same time referring the 

 latter species to the genus Diplocampta, Schiner (Verh. zool.-bot. Ges. Wien, 1867, 

 and Reise d. Novara, p. 119, t. 2. f. 9). Diplocampta, judging from Schiner's state- 

 ments and his figure, besides the presence of three submarginal cells, has a very round 

 head, without any development of the occiput behind the eyes, the eyes almost coming 

 in contact on the vertex, the wings broad and rounded towards the apex, the contact 

 of the fourth posterior cell with the discal rather long ; the third antennal joint is 

 described as round with a short, stout style ; the abdomen is short, rather conical ; the 

 typical species, D. singularis from Chili, is, for an Anthracid, remarkably small, 

 measuring less than five millimetres. None of these characters are applicable to what 

 I take for A. paradoxa, Jaenn. ; for this reason I cannot refer it to the genus Diplo- 

 campta. 



8-10. Anthrax, spp. ? 



Three closely allied Central- American species and another from Texas before me form 

 a natural group, which 1 propose to call Chrysanthrax, and which is distinguished by the 

 presence of fulvous pile on the thorax, and often of a golden-fulvous tomentum on the 

 abdomen ; a dark brown antero-proximal half of the wings, without any paler aureoles 

 on the cross- veins within the brown ; the contact of the fourth posterior and discal cells 

 punctiform ; the smooth tibiae ; the tapering and indistinctly jointed front tarsi, beset 

 on both sides with delicate, erect hairs ; the small front ungues ; the third antennal 

 joint in the shape of a cone, merging into a style ; the face short, conical, &c. As 

 my specimens of these four species are neither numerous nor well preserved enough to 

 enable me to prepare recognizable descriptions, 1 will merely indicate the differences 

 between them. A. sagata, Loew, Centur. viii. no. 34 (Matamoras), may, perhaps, 

 belong to this group. 



I. The boundary of the brown on the wings running some distance (at least a millimetre and a half) 

 along the second vein. 

 a. Proboscis not projecting; a conspicuous yellowish spot within the boundary of the brown, 

 across the middle of the first basal cell and the proximal end of the marginal ; axillary and 

 anal cells filled with brown, and a very small subhyaline space at their end. Length 12 

 millim. — Two specimens from Panama, Bugaba (Champion), 

 aa. Proboscis projecting more than a millimetre beyond the oral margin ; the yellowish space 

 within the first basal cell inconspicuous ; axillary and anal cells filled with brown, but the 

 biol. cente.-amee., Dipt., December 1886. r 



