144 MB. WALKEE ON DIPTERA COLLECTED IN AMBOTNA. 



Catalogue of tlie Dipterous Insects collected in Auiboyna by Mr. 

 A. E. Wallace, with Descriptions of New Species. By 

 Francis Walker, Esq., F.L.S. 



[Read January 19th, I860.] 



Fam. BIBIONIDjE, Haliday. 

 Gen. Plecia, Soffmansegg . 



1. Plecia (lorsalis, Walk. See vol. i. p. 5. 



Earn. CULICID^, RalUhy. 

 Gen. Culex, Linn. 



2. Culex IMPRIMENS, n.s. FcEm. Ferrugineus, proboscide palpisque 

 nigricantibus, antennis basi ochraceis, abdomine linea testacea, suturis 

 ventreque testaceis, pedibus testaceis, tarsis fuscis albido fasciatis, alls 

 cinereis. 



Female. Ferruginous. Palpi and proboscis blackish ; tlie latter straight, 

 a little longer tlian the thorax. Antennae ochraceous at the base. 

 Thorax with testaceous tomeutum. Abdomen with a testaceous line 

 and testaceous sutures above ; under side testaceous. Legs testaceous, 

 long ; tarsi brown, the joints whitish at the base. Wings cinereous ; 

 veins brown, slightly fringed. Length of the body 3 lines ; of the 

 wings 6 lines. 



'S. Culex ventralis, n. s. Fam. Fuscus, capite albo notato, ab- 

 domine fasciis latis ventralibus candidis, pedibus cupreo et purpiu-as- 

 cente nitentibus, alis subcinereis. 



Female. Brown. Head marked with white above. Proboscis straight, 

 very little longer than the thorax. Abdomen with broad pure white 

 ventral bands ; legs with cupreous and jiurplish toraentura. Wings 

 greyish ; veins black, fringed. Length of the body 3 hnes ; of the 

 wings 5 hnes. 



Fani. TIPULID.E, Haliday, 



Gen. LiMNOBiA, Meigen. 



Div. nov. 



No discal areolet; subcostal, radial, cubital, and the three externo-medial 

 veins not forked ; subanal and anal veins distinct ; the usual veinlet 

 between the 2nd and 3rd externo-medial veins. 



4. LiMNOBiA viTTiFRONS, u. s. F(gm. Ocluacea, gracilis, capite ni- 

 gro vittato, antennis uigris albido fasciatis basi testaceis, thorace guttis 

 quatuor nigricantibus, abdomine fasciis septem fuscis, pedibus longis- 

 simis gracillimis, tarsis nigricantibus, alis hnipidis, halteribus nigris. 



