152 Memoirs of the Indian Museum. [Vol. Ill, 



the second basal cell. Wing-pattern as in typical Aciura, with hyaline indentations 

 (two at the fore border) and discal spots. 



Type : the following new species. 



The present genus is one of those which link the two tribes Ceratitininae and 

 Trypan eininae ; it is very probable that many species described as A ciura , such as the 

 Neotropical insecta and phoenicuva , belong here. 



55. Tephrella decipiens, n. sp. $ . 

 (PI. X, fig. 56). 



A black species with yellow head, thorax densely covered with grey pollen and 

 shining abdomen ; the wings are black with hyaline base, 6 hyaline indentations 

 (2 at fore and 4 at hind border) and 3 discal spots. Length 5 mm., with the ovipositor, 

 which is i^ mm. long. 



_ Head yellow, the cheeks remarkably silvery white and shining ; antennae, palpi 

 and proboscis yellow, all the bristles dark yellowish, those of the occipital row 

 whitish ; occiput black with grey pollen. 



Thorax black, but on the back covered by dense yellowish pollen, which on the 

 pleurae is lighter and grey, the pleura being also more black and a little shining ; 

 the bristles are of a dark yellowish colour, like those of the head ; the yellowish hairs 

 are rather long and directed backwards. Scutellum coloured like the thorax, the 

 two bristles very long and black at the base. Squamulae dark, haltères yellow. 

 Abdomen shining black with short pale pubescence ; ovipositor as long as the last 

 four segments, black-haired. Coxae dark, the 4 posterior femora black ; the front 

 femora yellow, but black on the upper side ; tibiae and tarsi yellow ; front femora 

 with 3 very long bristles beneath. 



Wings broadly hyaline at the base to the stigma and to the basal cross-veins ; 

 there is a black spot on the costa at the upper end of the humeral cross-vein ; the veins 

 are yellow in this hyaline portion ; the stigma black, with a small yellowish spot .at 

 the basal lower angle. The six hyaline indentations are disposed as follows : two 

 approached together in the middle of the fore border, just after the stigma ; they are 

 of equal size and of triangular shape, with the broad rounded vertex on the third vein ; 

 the brown streak dividing these two indentations is placed before the small cross- 

 vein and becomes paler towards the costa, the separation at thel^ase being therefore 

 not very sharp ; the costa is yellow in correspondence with the bases of these hyaline 

 triangles, and the second vein also is yellow in the hyaline space and black in the 

 black streak. The other four indentations are placed at the hind margin ; 2 are in 

 the second posterior cell, one on the base, large and triangular, with the vertex to- 

 wards the superior end of the hind cross- vein, the other on the middle, much smaller 

 and in the shape of a rounded spot. The other 2 are placed in the third posterior 

 cell, approached together, of almost equal size, with the vertex on the fifth vein. The 

 three discal rounded spots are : one in the first posterior cell, a little beyond the hiiid 

 cross- vein; and two in the discal cell, one, the larger, towards the base below the stigma, 

 the other, which is smaller, below the small cross- vein. Anal cell hyaline, with dark- 



