226 CHIKONOMID^. 



black; third whitish at the base. Male. Plumes of the antennsB with 

 glistening-white tips. Ungues short and slender. Plantag with short 

 slender spines. Fern. First and second joints of the palpi often yellow, 

 or pale brown. Antennae occasionally yellow towards the base; joints 

 from the first to the eighth cylindrical, almost oval; from the ninth 

 to the thirteenth much elongated, elliptical; first joint twice the length 

 of the second. Abdomen more obscure, and much contracted at the 

 base, where as well as at the tip and on the hind borders of the seg- 

 ments there are a few glistening-whitish hairs ; underside with a large 

 subapical tuft of longer black hairs. Ungues stout, long. Plantse 

 beset with five or six pairs of stout spines. 



Generally cli.stributed. (E. S. I.) 



Stseger remarks that immediately after pairing the male is the 

 prey of the female, which holds its partner with its strongly armed 

 fore-legs, and inserts its proboscis deep into the peristoma, or the 

 opening of the mouth. 



50. fiavirostris, Winn.! Linn. Ent. vi. 52. 50. pi. 7. f. 50 (1852). 

 Mas et Teem. nUjer, nitklnti, capite avtice sublusque, i^ectorisque lateribus 

 antlcis Jiavis, alls Umjjidlfi, venis pallidis, halteriius niveis petiolis albidis, 

 pedihus albo-Jlavis,femoribus et tibiis posiicis tarsorum posticorum art'icu- 

 lis ap'ice nitjrh ; Mas, palpis pallide-fuscesceiitibus, antennis niffris, abdo- 

 minis apicejiavo ; Fa'm. palpis nigro-fuscis, antennis albidis apices versus 



fuscescentihus. Long. 1 ; alar. 2 lin. 



Male and Fern. Black, shining. Head hi front and beneath, proboscis, 

 fore sides and fore border of the pectus, and a streak by the base of each wing, 

 yellow. Wings limpid ; veins pale. Halteres ivhitish, with snow-white 

 knobs. Legs rchitish-ycUotc ; tips of the hind femora, of the hind tibia, 

 and of the joints of the hind ta)'si, black. Ungues slender, without teeth. 

 Male. Palpi pale brown, very large. AnternKS black, with black plumes ; 

 tips of the latter glistening-white. Abdomen with yellow forceps. 

 Fern. Palpi blackish-brown. Antenna tvhitish ; first joint cylindrical, 

 twice the length of the second ; the seven following joints more oval, 

 somewhat contracted in the middle; the five last brownish, eloYigated, 

 cylindrical. Hind femora blackish-brown for some space from their tips. 



(E.?) 



51. illustris, Winn.! Linn. Ent. vi. 53. 51. pi. 7. f. 51 (1852). 

 Fcem. albo- ant Jlavido-cinereus, capite postico nigro-fusco, proboscide 

 palpisque flavis aid pallide fuscis, antennis pallid e fiavis apicibus fuscis, 

 thorace lineis pnnctisque j)urpureo -fuscis, scutello flavo vittis qnatuor 



fuscis, pectore et metathorace nigro-fuscis, hoc subtus flam-marginato , alls 

 subfuscescentibiis, venis nigro-fuscis, abdomine nigro-fusco-nitido, pedibus 

 nigro-fuscis, tarsis flavis, femoribus tibiisque posticis incrassatis. Long. 

 A; alar. If lin. 



Fern. Head with some glistening -rchite marks arranged in the form of 

 a cross behind the crown ; hind part blackish. Proboscis and palpi yel- 

 low or pale brown ; joints of the latter very long ; second, third, and 



