FROM KEW GUINEA. 117 



42. Helomyza stelliplena. Mas. Nigra, capite antico palpisque 

 albidis, antennis piceis, thorace vittis quatuor cinereis, abdomine piceo 

 segmentis albido marginatis, tarsis albidis, alis nigris punctis guttisque 

 plurimis sti-igisque quatuor transversis albis, halteribus albis. 



Male. Black, dull. Head whitish and shining in front. Palpi whitish. 

 Antennae piceous, a little shorter than the face ; third joint linear, 

 whitish at the base, more than twice the length of the second ; arista 

 plumose. Thorax with four cinereous stripes. Abdomen piceous, 

 elongate oval, a little narrower but hardly longer than the thorax ; 

 hind borders of the segments whitish ; tarsi whitish. Wings black, 

 blackish hindward, with numerous white points and dots ; two trans- 

 verse white costal streaks, one beyond the middle, the other sub- 

 apical ; two short irregular white transverse lines between the discal 

 transverse vein and the border ; veins black ; discal transverse vein 

 straight, parted by half its length from the border, and by very much 

 more than its length from the praebrachial transverse vein ; alulae 

 cinereous ; halteres white. Length of the body 3^ lines ; of the 

 wings 7 lines. 



Gen. Seraca, Walk. 



43. Seraca abbreviata. Fam. Testacea, thorace vittis tribus scu- 

 tellique apice pectoreque vittis quatuor nigris, abdominis dimidio pos- 

 tico nigro apice testaceo, femoribus posticis piceis, alis nigris spatio 

 postico maculaque subapicali cinereis. 



Female. Testaceous. Head with black bristles. Antennae much less 

 than half the length of the face; third joint longer than the second; 

 arista bare. Thorax with three black stripes ; scutellum with a black 

 tip. Pectus with two black stripes on each side. Abdomen fusiform, 

 a little longer and narrower than the thorax ; apical half black ; tip 

 testaceous, acuminated. Hind femora piceous. Wings black, cine- 

 reous on a little more than half the length from the base, and on a 

 little more than half the breadth from the hind border ; a cinereous 

 spot on the hind border towards the tip ; veins black ; discal trans- 

 verse vein straight, parted by half its length from the border, and by 

 more than its length from the praebrachial transverse vein ; halteres 

 pale testaceous. Length of the body 5 lines; of the wings 10 lines. 



Gren. Tendeba, n. g. 

 Mas. Corpus robustum, non setosum. Frons plana ; facies sub- 



impressa. Palpi parvi. Antennce brevissiraae ; articulus 3"' rotundus, 



minimus; arista subpubescens. Scutellum conicum, productum. 



Abdomen longi-ovatum, thorace brevius et angustius. Pedes robusti, 



nudi. Al(B latiusculae. 

 Male. Body robust, without hairs and bristles. Head as broad as the 



thorax ; front flat ; face slightly impressed ; mouth very small. Palpi 



small. Antennae extremely shoi-t ; third joint round, extremely small ; 



arista minutely pubescent. Thorax with a prominent conical scu- 

 LINlSr. PROC. — ZOOLOGY, YOL. YIII. 10 



