4 i6 H - Fkiese, 334 



Cameron's Diagnose für Plesianthidium (subgen.) lautet: 



Similar to Anfhidium, but with the maxillary palpi 3-jointed and the mandibles unidentate. 



This genus is founded on a large species, densely haired on the head, thorax, and abdomen, and having 

 the general form and abdominal structure of Antliidium, but sufficiently distinguished from it by the characters 

 noted above. The first recurrent nervure ist almost interstitial, the second received distinctly beyond the second 

 transverse cubital. The abdomen wants entirely the yellow markings found on most species of Antliidium. The 

 first and third joints of the maxillary palpi are about equal in length; the middle one is as long as both united 

 and thicker than them; the labial palpi are as in Antliidium, the trophi being long as in that genus. The man- 

 dibles, behind the apical tooth, are straight. L. 15—16 mm. 



Südafrika. 



Antliidium capense Cam. 

 1905 Antliidium capense Cameeon, $, in: Tr. S.-Afr. Phil. Soc, Vol. XV, p. 257. 



$. Black; the clypeus, an irregulär line on the apex of the sixth and the whole of the apical segments 

 yellow; the apices of the basal five abdominal segments whitish-yellow ; the front, Vertex, and upper part of 

 thorax thickly covered with long reddish-fulvous hair; the hair on the face, clypeus, pleurae, and abdomen white, 

 the hair on the back of the abdomen with a faint fulvous tinge. Wings hyaline, the nervures and stigma black. 

 L. 9 — 10 mm, br. 4 mm. 



Middle of mandibles with a broad yellow band above. Apex of abdomen with four teeth; the outer 

 slightly shorter and broader than the inner. The tarsi except at the base, and the anterior tibiae in front are 

 testaceous; middle femora with a short blunt tooth on the apex. Head and thorax closely and strongly punctured. 

 Apex of scutellum bhmtly rounded. 



The female has the head and mandibles entirely black; the scopa and the hair on the under side of the 

 tarsi rufous; the apical joints of the tarsi ferruginous. The antennae with both sexes are entirely black; the 

 basal five bands on the abdomen, in both sexes, are narrow and of uniform width; the last segment, in the 

 female, is entirely black; the calcaria pale. The tooth on the apex of the middle femora is found also in the 

 female. The hind tibiae narrowed at the base, becoming slightly, gradually wider towards the apex, which is 

 wider than the metatarsus. Tegulae black. 



Kapland. 



Antliidium erassidens Cam. 

 1905 Anfhidium erassidens Cameeon, $, in: Rec. Albany Mus., Vol. I, p. 201. 



$. Black, front tarsi and thair tibiae anteriorly rufous, the apical joints of the middle tarsi of a darker 

 rufous colour; on the outer side of the 1. abdominal segment is a large transverse yellow mark, dilated on the 

 inner side at the base, on the sides of the 2. a much smaller line about 3 times broader than long; on the 3.-5. 

 more towards the middle, are larger and broader marks, that on the 4. being larger than the others. Wings 

 fuscous-violaceous, more or less hyaline, the stigma and nervures black. The hair on the face, clypeus and 

 pleurae white; on the front, vertex and top of thorax fuscous; tegulae black; scopa white, tinged with rufous. 

 L. 1 1 mm, br. 4 mm. 



Mandibles with 4 stout, broadly rounded teeth; the apical longer and sharper pointed than the basal three ; 

 base clearly separated from the 4. tooth, its anterior part with an oblique slope; except in the middle at the 

 base they are closely, but not strongly punctured; behind the 2. tooth is a rufous mark. Head and thorax closely 

 rugosely punctured; apex of scutellum broadly rounded, the middle sligthly incised; it projeets over the meta- 



