548 MR. H. N. RIDLEY ON THE 



55. Ehagoyelia incerta, n. sp. 

 Long. Corp. 2| millim., lat. 1 millirn. 



Blackisli brown ; the orbits, front of prothorax, whitish, slightly- 

 tawny ; abdomen with a whitish pile on the sides and less con- 

 spicuous beneath : base of auteunfe, femora above, and legs beneath 

 tawny : closed liemilj'tra wliitish (or sliglitly tawny) at the base 

 between the nervures, but with no other pale markings except 

 the conspicuous long-oval wliite spot before the tip. 



A shorter and broader species than any at present represented 

 in the British Museum ; but with most general resemblance to 

 Microvelia vagans, White. It is possibly a variety of the widely 

 distributed and variable Vclia coUaris, Burin. 



On grasses in the lake. 



56. PSILOPUS METALLTFER, Walk. 



Psilopus metallifer, Walk. List Dipt. B. M. iii. p. 647 (1849). 

 Flying over Cucurbitacese on the Peak. 



57. Temnoceba vesiculosa (Fabr.). 



Syrphus vesiculosus, Fabr. Syst. Antl. p. 226, n. 11 (1S05). 



Flying over herbage in the sun, and also taken on the flowers 

 of the cabbage in the garden. 



58. Saecophagja calida, Wiedem. 



Sarcophaga calida, Wiedem. Aussereurop. zweijl. Ins. ii. ji; 366, ii. 24 

 (1830) ; Walk. Ins. Saund. Dipt. p. 326 (1856). 



COLEOPTERA. 



By Chas. 0. Waterhoitse, P.E.S., 

 Assistant in the Zoological Department, British Museum. 



The number of species obtained was 24. As might naturallj' 

 be ex2)ected, many of them are Brazilian species or are species 

 with a wide geographical range. One of the Heteromerous 

 genera, Avhich I have named ^sthetus, is almost certainly 

 indigenous. Perhaps the most interesting species is a Longicorn 

 of the genus Acanthoderes. At first sight I took it to be a pale 



