Mr. F. Walker on some undescribed Ceylon Insects. 305 



beneath. Metathorax roughly punctured, with a longitudinal 

 impressed line. Petiole long, slender. Legs yellowish ; hind 

 femora and hind tibise black ; anterior femora with a black band. 

 Wings quite vitreous ; veins and stigma black. Length of the 

 body 3|- lines ; of the wings 4 lines. 



Fam. Larridae. 



LARRADA EXTENSA. Mas. Nigra, argenteo pubescens, capite magno 

 supra piano antice bicarinato, scutello minimo nitente, metathorace 

 maximo sulcato bituberculato, abdomine fusiformi basi apiceque 

 nitente, pedibus robustis, femoribus incrassatis, alis nigricantibus. 

 Male. Black, hardly shining, with silvery pubescence. Head 

 much broader than the thorax, flat above, vertical and with two 

 slight keels in front. Antennae filiform, piceous at the very base. 

 Scutellum shining, very small. Metathorax much developed, 

 nearly vertical arid with a slight furrow hiridward ; the ridge with 

 two tubercles. Abdomen fusiform, shining at the base and at the 

 tip, not longer than the thorax. Legs stout ; femora incrassated. 

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



4 lines ; of the wings 5 lines. 



Fam. Apidae. 



ANDRENA EXAGENS. Fcem. Nigra, scitissime punctata, cinereo pi- 

 losa, capite rude punctato, antennis subclavatis apice rufis corporis 

 dimidio non longioribus, abdomine rufo elliptico segmentis tribus 

 posticis nigris, genubus rufis, tarsis testaceis, alis subcinereis. 



Female. Black, shining, very finely punctured, with cinereous 

 hairs. Head roughly punctured, very pubescent in front, a little 

 broader than the thorax. Antennae subclavate, about half the 

 length of the body, red at the tips. Abdomen red, elliptical, a 

 little broader and longer than the thorax ; last three segments 

 black. Knees reddish ; tarsi testaceous. Wings slightly cinereous ; 

 veins and stigma black. Length of the body 3 lines ; of the wings 



5 lines. 



NOMIA VINCTA. Fcem. Nigra, opaca, lata, crassa, punctata, cinereo 

 pubescens, ore testaceo basi nigro, antennis subclavatis capite non 

 longioribus, abdomine elliptico nitente scitissime punctato fasciis 

 tribus cinereo tomentosis, tarsis subtus pallidis, alis cinereis. 



Female. Black, dull, broad, thick, very closely and minutely 

 punctured, with cinereous pubescence. Mouth testaceous, black 

 at the base. Antennae subclavate, as long as the head. Abdomen 

 elliptical, shining, very finely punctured, a little longer and broader 

 than the thorax, with three bands of cinereous tomentum. Tarsi 

 pale beneath. Wings cinereous ; veins and stigma black ; third 

 submarginal areolet much less than twice the length of the second. 

 Length of the body 3^ lines ; of the wings 6 lines. 



TRIGONA PR^TERITA. Fcem. Nigra, brevis, lata, glabra, nitens, 

 capite opaco subscabro sulcato, antennis testaceis filiformibus 



