274 MR. G. J. ARROW ON THE MELOLONTHINE 



Of the same size, shape, and general appearance as E, nilidiven- 

 tris, but with the pattern of the upper surface composed of uniform 

 pale green scales. These form a continuous median line from the 

 front margin of the pronotum to the hind margin of the elytra, 

 round which they are continued, and generally unite with a lateral 

 margin extending from the shoulder. There is also a lateral loop 

 of similar scales on each side of the pronotum formed by a rather 

 broad border, continued round the front angle and almost reaching 

 the hind angle, where it remains open. The pygidium and sides 

 of the body beneath are densely covered with similar green scales, 

 and the median part is clothed with silvery-blue scales, also 

 sprinkled thinly over the legs. 



Ectinoi-ioplia NiTiDiVEKTRis, sp. n. (Plate I. fig. 6.) 



Nigra, squamis supra coeruleis, subtus viridibus ornata, capite 

 nigro, pronoti vittis tribus exiguis, elytrorum vitta suturali pos- 

 tice abbreviata squamisque nonnullis posthumeralibus coeruleis, 

 opacis, peclibus, metasterni et abdominis medio squamis argenteo- 

 viridibus, pronoti angulis anticis, propygidio, pygidio corporisque 

 subtus lateribus squamis pailide viridibus opacis vestitis ; modice 

 elongata, capite rugoso, setoso, vix squamoso, clypeo semicirculari, 

 pronoto longitudine sua parum latiori, trisulcato, lateribus 

 antice et postice con tractis, angulis anticis acutis ; elytris postice 

 separatim rotundatis, ad suturre finem setis longis instructis ; 

 pedibus modice gracilibus, posticorum ungue fisso. 



Long. 7"5-8 - 5 mm. ; lat. max. 4 mm. 



Hab. Assam (Khasi Hills): Shillong, 3000-5000 ft. (E. E. 

 Turner— -April, May), Gauhati, 1000-3000 ft. 



Closely related to E. flavicauda, and sulphur -eiventris. As in 

 the former, the scales covering the median part of the metasternum 

 and abdomen are extremely brilliant, but of a pale silvery green 

 instead of blue. It is rather more elongate in shape than that 

 species, the elytra being narrower, and the three sulci of the 

 pronotum are less deep. The scales forming the pattern of the 

 upper surface are of the same bright blue colour but are reduced 

 in number. Those in the thoracic grooves are very few except at 

 the base of the median groove, where they form a triangular 

 patch. The scutellum mayor may not bear similar blue scales, 

 and the elytra have a i"ather broad, elongate, indefinite patch upon 

 the suture, beginning at the scutellum but not reaching the hind 

 margins. There are also scattered scales of the same colour at 

 the sides behind each shoulder, usually not extending beyond the 

 middle. The exposed part of the propygidium, the pygidium and 

 the sides of the body beneath, as well as the front angles of the 

 pronotum, are densely covered with scales of a, very pale green 

 colour. The front tibife of the male are more slender than those 

 of the female. Their teeth are less close together than in the 

 male of E . flavicauda . 



