380 Mr. J. R. Mallocli on Exotic Muscaridae. 



Ocellar triangle slender, extending to anterior margin of 

 frons ; parafacials linear, with a few weak Lairs ; antennae 

 uot extending mnch below middle of face ; arista plumose ; 

 vibrissa^ distinct, well above mouth-margin ; proboscis 

 stout. Stigmatal l)ristle weak ; humeral weak or absent ; 

 sometimes a weak setula in trout of the prescutellar pair of 

 dorso-ceutrals. Abdomen as in atrifrontata, Malloch ; the 

 fifth sternite very long and asymmetrical at apex. Fore 

 tibia without a mediau bristle; fore tarsus normal, without 

 the dilation of apical two segments as in atrifrontata ; mid- 

 tarsus with long hairs on ventral surface of basal segment, 

 especially apically; hind femur with four or five long bristles 

 on basal half of ventral surface, which are very fine apically 

 and are not so closely placed as in atrifrontata, nor flexed as 

 in that species ; hind tibia curved, thickened and with short 

 hairs on apical half; hind tarsus with basal segment 

 thickened. 



Female. — Diff'ers from the male iu having the mid and 

 hind tarsi normal, the hind femur lacking the ventral 

 bristles, the hind tibia less curved and uot so thick apically, 

 and third and fourth tergites with a pale spot in hind 

 margin. 



Length, cJ 4 mm., ? 5 mm. 



r^/^e, male, Trincomali, Hot Wells, Ceylon, 12. vii. 1891 ; 

 allotype, topotypical, 2. viii. 1891 ; paratypes, one male, 

 topotypical, 24. ii. 1892 ; one female, Hinanduma, Ceylon, 

 28. iv. 1892; one female, Kanthalai, Ceylon, 8. iii. 1892 ; 

 one female, Perivipaucheram, Ceylon, 9, iii. 1892. 



The last specimen differs from the others in having the 

 face almost white instead of yellowish, but I believe it to be 

 the same species. 



Named in honour of the collector. Col. J. W. Yerbury. 



This and the other species of the genus resemble Lisj)a 

 paUitarsis^ Stein, which also belongs to Xenulispa, but that 

 species has the fore tarsi largely whitish. 



Genus CHiEXOLisPA, nov. 



Generic characters. — Differs from Lispa in having a strong 

 bristle on parafacial close to lower anterior margin of eye. 

 Dorso-centrals 2 + 3 ; steruo-pleurals 3 ; each tibia with from 

 3 to 5 apical long spurs ; mid-tibia with an antero-dorsal and 

 a postero-dorsal bristle; hind tibia with three median bristles, 

 one antero-dorsal, one antero-ventral, and one postero-dorsal. 

 First posterior cell not narrowed apically. 



Genotype, Lispa geniseta, Stein. 



I have before me two females of this species from Trin- 

 comali, Ceylon, 1. x. 1890 (J. W. Yerbury). 



