308 Mr. F. Walker on some undescribed Ceylon Insects. 



lineare, thorace valde angustius paulo brevius. Pedes robusti, 

 breves, femoribus tibiisque posticis dilatatis. 



Male. Body robust, broad, short. Head subquadrate, as broad 

 as the thorax. Antennae stout, a little longer than the body, with 

 less than twenty closely connected joints, which successively de- 

 crease in length. Abdomen sessile, linear, much narrower and a 

 little shorter than the thorax. Legs stout, short ; hind femora 

 and hind tibiae dilated. Wings moderately broad ; discal areolet 

 complete. 



The following species was erroneously separated from Micro- 

 gaster, and mentioned as forming a new genus (Liganira) in the 

 list of Ceylon insects referred to above. 



MICROGASTER DETRACTus. Mas. Niger, obscurus, confertissime 

 punctatus, antennis piceis basi rufescentibus, abdomine glabro, sub- 

 tus albido, pedibus anterioribus testaceis, femoribus anterioribus 

 basi piceis, alis cinereis, venis stigmateque nigris. 



Male. Black, opake, very thickly and minutely punctured. 

 Antennae piceous, reddish towards the base. Abdomen smooth, 

 shining, whitish beneath. Legs testaceous ; anterior femora pi- 

 ceous towards the base ; hind legs black ; hind coxae testaceous. 

 Wings cinereous ; veins and stigma black. Length of the body 

 If line ; of the wings 4 lines. 



MICROGASTER RECUSANS. Fcem. Niger, robustus, obscurus, con- 

 fertissime punctatus, antennis validis corpore vix breviorib;is, ab- 

 domine glabro compresso subtus basi albido, tibiis tarsisque ante- 

 rioribus testaceis, femoribus tibiisque posticis subdilatatis, alis 

 nigricantibus. 



Female. Allied to M. tibialis. Black, robust, opake, very thickly 

 and finely punctured. Antennae stout, almost as long as the body. 

 Abdomen smooth, shining, much compressed, whitish beneath at 

 the base, not longer than the thorax. Ovipositor shorter than the 

 abdomen. Anterior tibiae and tarsi and tips of anterior femora 

 testaceous ; hind femora and hind tibiae slightly dilated ; hind 

 knees testaceous. Wings blackish ; veins and stigma black ; 

 a whitish point at the inner end of the stigma. Length of the 

 body 1 1 line ; of the wings 3 lines. 



MICROGASTER SIGNIFICANS. Mas. Niger, obscurus, confertissime 

 punctatus, antennis corpore longioribus, abdomine glabro angusto, 

 tibiis tarsisque anterioribus testaceis, femoribus tibiisque posticis 

 subdilatatis, tibiis posticis basi testaceis, alis venis stigmateque 

 albidis, vena costali extus nigra. 



Male. Nearly allied to M . xanthostigma ; antennae rather 

 longer and stouter. Black, opake, very closely and finely punc- 

 tured. Antennae longer than the body. Abdomen smooth, shining, 

 much narrower than the thorax. Anterior tibiae and anterior tarsi 

 and tips of anterior femora testaceous ; hind femora and hind tibiae 

 slightly dilated ; hind tibiae testaceous towards the base. Wings, 

 veins, and stigma whitish ; costal vein exteriorly and veinlet along 



