310 Mr. Westwoop on Diopsis, 
invenitur, atque scutellum ipsum spinis duabus tam brevissimis armatur, 
quas pictor omisit in delineatione insecti. 
Wiedemann does not state the colour of the legs nor the habitat of this 
species; but he has supplied the latter omission in his memoir upon Achias, 
where he states it to be from Java. In addition to the characters given above, 
which I have translated from Wiedemann's German description, the following 
are observable in his figure. The ocular peduncles are about the length of 
the abdomen, and slender; the anterior femora are rather thicker than the 
others, and the base of the abdomen for more than half its length is narrow 
and linear, and is suddenly clavate, and as broad as the thorax. 
Species 20. Dropsis Sykesu. G. R. Gray. 
Tas. IX. Fig. 18, 19. 
D. nigra, abdomine in medio pedunculisque oculiferis piceis, pedibus fulves- 
centibus, alis fuscis hyalino-fasciatis. " 
Long. corp. lin. 313—33.  Expans. alar. lin. 6. 
Habitat in India Orientali. Sykes. In Mus. Sykes, Gray, nostr. 
Preecedenti alis fasciatis thoraceque 6-spinoso valdé affinis, at colore nigro 
spinisque scutellaribus longis diversa. Caput nigrum, vix nitidum, os 
versus attenuatum, dente subrecto utrinque armatum, facie in medio 
convexa, linea longitudinali elevatà. Haustellum pallidum. Pedunculi 
oculiferi in speciminibus robustioribus capite cum thorace paulld lon- 
giores, sed in aliis longitudinem corporis fer? zequant, piceo-nigri, spina 
una in medio, alteraque ad apicem supra oculos. Antenne fusce. Oculi 
rufi. Thorax totus niger, opacus, investimento sericeo-subcinerascenti : 
collari et scutello concoloribus. Mesothorax supra locum insertionis alarum 
utrinque spina valida, acuta, piceà armatum ; alteráque breviori, obtusa 
metathoracicà: scutello etiam spinis duabus illo tripló longioribus, piceis 
instructo. Abdomen valdé clavatum, presertim in individuis robustiori- 
bus, nigrum, apice articuli 1mi (longissimi) laté piceo, et utrinque (pone 
lineam articulationem preecedentem referentem) macula subpallida seri- 
canti in certo situ conspicienda. Ale fuscescentes, apicem versus obscu- 
riores, sed basin versus feré ad nervum medium transversum hyalinze, 
