cmd Characters of undescribed Species. 367 



Genus Halticella. 



Halticella ensator. 

 Mas et Foem. — Nigra ; caput et thorax scabrosa ; caput valde 

 impressiirn ; antennae thorace non breviores ; calli rufes- 

 centi-picei ; scutellum inerme ; metathorax bidentatus ; 

 petiolus brevissimus ; abdomen rufescenti-piceum ; femora 

 postica incrassata, octo-dentata ; alse anticae dimidio basali 

 fuscescente. Mas. — Abdomen longi-ellipticum, thorace bre- 

 vius. Fcem. — Abdomen thorace multo longius, apicem ver- 

 sus nigrum, stylatum. 



Female. — Black. Head and thorax largely scabrous. Head 

 deeply impressed in front for the reception of the scape of the 

 antennae ; the latter hardly thicker towards their tip, as long as the 

 thorax. Prothorax sub-quadrate, more than twice broader than 

 long. Mesothorax with the calli at the base of the fore-wings red- 

 dish-piceous ; hind border of the scutellum prominent ; meta- 

 thorax bidentate. Petiole very short. Abdomen much longer 

 than the thorax ; basal part elongate-oval, reddish-piceous ; apical 

 part stylate, compressed, of equal depth, shorter than the preceding 

 part. Hind-legs of the usual form ; hind-femora armed beneath 

 with eight teeth of equal size. Wings cinereous; veins black. 

 Fore-wings brownish from the base to the cubitus ; ulna about half 

 the length of the humerus ; radius very short, longer than the 

 cubitus. 



Length of the body 7 lines ; of the wings 9 lines. 



Male. — Antennae slender, filiform. Abdomen elongate-ellip- 

 tical, shorter and a little narrower than the thorax. 



Length of the body 4 lines. 



Sarawak, Borneo. Discovered by Mr. Wallace. In the 

 British Museum. 



Halticella ducator. 

 Foem. — Nigra ; caput et thorax scabrosa ; caput impressum, 

 facie perobliqua ; antennae filiformes, thorace paullo longiores; 

 scutellum inerme ; metathorax bidentatus ; petiolus brevis- 

 simus; abdomen thorace multo longius, basi fusiforme rufes- 

 centi-piceum, apice nigrum stylatum ; femora postica incras- 

 sata, decem-dentata ; alae cinereae. 

 Female. — Black. Head and thorax scabrous. Head impressed 

 in front ; face very oblique. Antennae filiform, a little longer than 

 the thorax. Thorax like that of H. ensator in structure. Petiole 

 very short. Abdomen very much longer than the thorax ; basal 



