214 K. Bruneih : .\flfes on Oriental Diptera. [VOL. I, 



5. hatjanensis, nom. nov. 



Nom. nov. for S. costalis Wlk. (1861) preoccupied 



Proc. Linn. Soc. Lond., v, 291. 



Walker's second species under the name of costalis was des- 

 cribed from Batjan, and appears quite distinct. The author calls 

 it " ferruginous " as differing from " cinereous " under which 

 term he described his Aru Islands species. The t^^pe is a cf . I 

 fail to understand Walker's remark " allied to S. duplicans," not 

 being able to trace any such species. Immediately following his 

 description of S. costalis (i) is a new species of his, Lauxania dup- 

 licans, which he could hardly confuse, or compare with a Sepedon. 

 I presume his " hind femora denticulated " (in his Aru Islands 

 species) refers to the row of spines present in all the species. 



5. javanensis R. Des., 1830. 



Essai sur les Myodaires, 677. 



Figured in Macquart's Dipt. Exot., ii, pt. 3, pi. xxiv, 2, 2a, 26. 



(Syn.) S. iavana, Macq., loc. cit., ii, pt. 3, 177. 



This species must be allied to ni}^ sanguinipes. From Mac- 

 quart's plate, the wings appear to be uniformly coloured, whereas 

 in my new species sanguinipes, they are quite distinctly darker to- 

 wards the tip, and yellowish towards the costa. 



Moreover Macquart mentions that the fotir anterior tarsi 

 are enlarged in the a" , whereas in all the examples of sanguinipes 

 that I have examined, this enlargement is confined to the fore pair 

 only. The longish hair below the four anterior tarsi, which Mac- 

 quart mentions and figures as an additional or overlooked character 

 of the species, is replaced in sanguinipes by the ordinary short 

 pubescence common to all the species. As regards the dilatation 

 of the fore tarsi, I find this is also the case in fenuginosus Wied. cf ; 

 in both sexes in sanguinipes ; and likewise in the single example 

 of crishna Wlk. that I have seen, which is a 9 ; so that the character 

 appears to be common to several species in the genus, and not 

 confined to the cf sex. In fact Macquart in his supp. iii, pt. 3, 

 p. 219, to his previousl}^ mentioned work mentions a 9 javanensis 

 R. Des. with enlarged anterior tarsi. Again, Macquart's figure 

 shows the posterior femora of uniform colour, whereas in my 

 species the contrast is strikingly distinct between the bright yellow 

 and brilliant red, with the extreme tip distinctly black ; none of 

 which characters appear in Macquart's figure. Moreover mine is a 

 larger species, and lastly, Macquart shows the thorax rather lighter 

 than the abdomen, with two very distinct black stripes, whereas 

 in sanguinipes , the thorax is unicolorous blackish with the ab- 

 domen, and (when present) the two dorsal darker stripes are very 

 indistinct. 



