574 Prof. J. O. NTcstwood's Monograph of 



Sp. 2. Si/stropus leptof/asier. 



"Niger, facie humeris coxisquc anticis pallidlssime 

 flavis, abdominis segmcntis 2ndo, 3tio, 4to, ct oto rufis, 

 vitta iiioro-brunnea signatis, cellulis alarum submargin all- 

 bus tribus." 



Long. Corp. lin. 6^ ; long. alar. lin. 4|. 



Habitat in Caffraria (^\'alilberg). 



Si/stropus leptogaster, Loew. Dipt. S. Afr. p. 200. 



Sp. 3. Si/stro]ncs crudelis, IVestw. (PI. X. fig. 1 — 12.) 



Niger, opacus, griseo-sericeus, antennarum articulo 

 basali, pedibus cum coxis anticis (basi femorum apici- 

 busque tarsorum nigricantibus exceptis), lateribus thoracis, 

 ad basin alarum, abdominis segmentis tribus basal ibus, 

 ferruginosis; facie antice fusca tibiisque anticis argenteo- 

 sericeis; alls pallide cinereis, costa late maciilaque sub- 

 costali ante medium alarum nigris. 



Long. Corp. lin. 9; expans. alar. lin. 11. 



Habitat in Natalia (Gueinzius). In Mus. Hopeiano 

 Oxonifc. 



Variat paullo major, facie inter oculos antice, angulis 

 anticis liumeralibus thoracis, fascia tenui transversa post- 

 scutellari ferrugineis, pleuris prothoracis puncto utrinque 

 albido, metasterno post pedes posticos magis convexo. 



Habitat in Damara Land (Anderson). In Mus. 

 Hopeiano Oxoni^e. 



S. macilento major et minus feiTuginosus et e S. 

 leptog astro coxis anticis obscure coloratis primo intuitu 

 distinctus. 



Division B. Species Asiatlcfe. 

 Sp. 4. Systropus Opliioneus. 



Niger, thorace flavo-maculato, abdomine obscure fulvo, 

 striga doi'sali nigra; femoribus posticis ferrugineis; tibiis 

 posticis basi et apice pallidis, tarsis posticis nigris. 



Long. Corp. lin. 7; expans. alar. lin. 9^. 



Habitat in India Orientali (D. Boys). In Mus. 

 Hopeiano Oxonias (olim nostr.). 



Systropus Oj>hioneus, Westw. Trans. Ent. Soc. v. p. 233, 

 pi. 23, fig. 6. 



Caput antice inter oculos albidum. Thorax humeris, 

 lateribus antice, cum coxis anticis, macula utrinque tri- 

 gona ante alas, pimcto parvo utriiupie ante scutellum 



