WALKEE ON DIPTEEA OF ARU ISLANDS. 79 



Female. Black. Head testaceous, with some black spots on the vertex. 

 Antennae dark ferruginous towards the base. An interrupted stripe 

 on each side of the thorax, two pectoral calli, the scutellum, and the 

 hind borders of the second, third, and fourth abdominal segments 

 green. Abdomen testaceous at the base beneath ; first band inter- 

 rupted, having before it two testaceous spots. Knees lurid ; tarsi 

 white. Wings blackish brown; stigma and veins black; halteres 

 apple-green. Length of the body 5-6 lines; of the wings 10-12 

 lines. 



G-en. Salduba, n. g, 



Male. Corpus angustum, sublineare. Caput transversum; vertex an- 

 gustus. Oculi magni. Antennce capite transverse valde longiores; 

 articuli primo ad septimum breves ; flagellum longum, lanceolatum, 

 subarcuatum. TAoraa? longus, subcompressus ; scutellum inerme. Ab- 

 domen planum, thorace pauUo longius. Pedes graciles ; postici longi. 

 Alee angustae. 



Male. Body narrow, nearly linear. Head slightly transverse, nearly as 

 broad as the thorax ; vertex narrow. Eyes large. Antennae shorter 

 than the thorax ; joints from the first to the seventh short ; flagelluni 

 long, lanceolate, slightly curved. Thorax long, slightly increasing in 

 breadth from the head to the base of the wings. Abdomen nearly flat 

 and linear, a little longer than the thorax. Legs slender; hind pair 

 long. Wings narrow ; veins complete, distinctly marked ; first cubital 

 areolet rather short, divided from the second by the oblique first cubi- 

 tal rim ; discal areolet large, hexagonal ; subanal and anal veins 

 united at some distance from the border. 



9. Salduba diphysoides, n. s., Mas. Nigra, ore flavo, thorace vittis 

 quatuor subauratis, abdominis apice cinereo, pedibus albidis, femoribus 

 posticis apices versus tibiisque posticis nigris, alis cinereis, venis 

 stigmateque nigris, halteribus testaceis. 



Male. Black. Mouth yellow ; thorax with four stripes of slightly gilded 

 tomentum ; tip of the abdomen with cinereous tomentum ; legs 

 whitish, hind femora towards the tips and hind tibiae black ; wings 

 greyish, veins and stigma black; halteres testaceous. Length of 

 the body 4^ lines ; of the wings 8 lines. 



Gen. Stratiomts. 



10. Stratiomys confertissima, n. s. Fam. Nigra, subtus ferru- 

 ginea, capite fulvo, antennis basi fulvis, thorace vittis quatuor sub- 

 auratis, scutelli margine fulvo, ventre piceo basi testaceo, pedibus 

 fulvis nigro fasciatis ; alis subcinereis, venis stigmateque nigris, hal- 

 teribus testaceis. 



Female. Black, ferruginous beneath. Head, antennae at the base, 

 border of the scutellum, and legs tawny ; antennae a little shorter 

 than the breadth of the head; thorax with four slightly gilded 



LINN. PROC. — ZOOLO&T. 6 



