ClIALAKUS. 3 



Assoc, Div. Ent., Uull. 1, part 4, pp. 123-157, pis. v-vii, 1905 

 (Honolulu)); and the life-cycle is dealt A\ith by 1). Keilin and 

 W. 11. Thompson (Comptes-rendiis Soc. Biol. (Paris), vol. 78, 

 pp. 9-12, 1915). 



Table of Genera. 



Discal cell absent Ciialakus, Walk., p. 3. 



Discal cell present. 



Occiput puffed out ; ocellar bristles 

 absent ; pubescence very slight or 



absent 1'ipuxcultis, I^atr., p. 4. 



Occiput not prominent; ocellar bristles 

 present ; pubescence distinct Vkrrallia, Mik., p. i^l. 



Genus CHALARUS, Walh. 



Ckalarus, Walker, Ent. Month. Mag, ii, p. 269 (1834) 



Gexotype, C>;phalojjs S2)uriiis, Fin. (Europe); by original 

 designation. 



Differing from Pipuncxhis primarily in tlie venation. Discal 

 cell absent, through the 4th longitudinal vein ending suddenl}' 

 just beyond the anterior cross-vein ; posterior cross- vein present, 

 situated as in Pipioiculus- 5th vein widely forked, long; anal cell 

 open ; anal vein barely or not reaching border of wing. Second 

 antennal joint bare, 3rd rounded at tip; two ocellar bristles 

 present ; eyes as in FipuncuJi(S, front facets in $ enormously 

 enlarged. Thorax with bristly hairs on side margin and round 

 the scutellum. Abdomen pubescent in d ; genitalia small, rounded; 

 abdomen in 5 more bristly, ovipositor short, incurved. 



lianr/e. Only two species are definitely known, both from 

 Europe, C. sj>uriu.<f being also recorded from New Hampshire. 

 1 took one specimen of it at Darjiling. 



1 . Chalanis spurius, F/n. 



Ccphalops spuritci, Fallen, Dipt. Suec. Syrpli. p. 16 (18 IG). 

 PipunciUui spurius, Meigen, Svst. Bescli, iv, p. 24, pi. .\xxlii, fin-. 24 



(1824). 

 Pipuncului holosericeus, Meigen, fSyst. Besch. iv, p. 24 (1824), and 



vii, p. 148 (1838). 

 Pipunculus c.ii(juus, Ilaliday, Ent. ^lontli. Mag. i, p. ltJ2 (1833), 

 Pipunculus tjhscurus, Zetter.stedt, Ins. Lapp. ]>. .^SO (1834). 

 Atcleneura velutinus, Macquart, llist. 2Sat. Diut. ii, u. 12, pi. xiii, 



fig. (1835). 



(f $, Head: eyes in cj" nearly contiguous, front facets scarcelv 

 larger than rest in cJ , very enlarged in 2 ; ti'ons and face narrow, 

 about equally witle, former blackish in J, wider in $ , especially 

 about the middle, with greyish siile margins bearing a few tiny 

 bristles; in both se.\es with silvery-white shimmer when viewed 



i( 2 



