452 Records of the Indian Museum. [Vor,. XVI, 



single male of this insect was also taken by myself at Poona, 1-4- 

 19, in Mr. Thistleton Dyer's compound, near the Moolah River. 

 I have named it after Mr, Thistleton Dyer, who is a son of the emi- 

 nent Kew botanist.) 1325/H2. 



Head black ; labium and clypeus sky-blue ; two pyriform, blue, 

 postocular spots; eyes deep sea-blue above, greenish beneath. (la 

 Mr. Gravely 's specimen the postocular spot is enclosed on one side 

 only, but in my own specimen the spots are present on both 

 sides.) 



Prothorax blue marked with black in a somewhat elaborate 

 pattern. The black, which is bordered all round with blue, narrowly 

 at the sides and posteriorly, encloses a small, blue geminate spot 

 at its middle, and a larger, subdorsal spot each side. 



Thorax sky-blue, with narrow, dorsal and humeral, black lines. 



Legs pale blue, streaked with black on the extensor surfaces. 



Wings as in the first mentioned species ; the petiolation of 

 the wings is extremely short ; ac falls on to ab opposite the ist 

 antenodal nervure. Postnodals 8 and 7 respectively in the two 

 wings. Stigma pale sepia or cinereous. Apex of wing closely 

 reticulated. 



Abdomen hhie marked with black, as follows: — a black spot 

 on the basal half of segment I and a transversely linear, triangular 

 spot on its apical border, followed distally by a blue annule. 

 A broad, black, dorsal fascia on the 2nd segment, extending from 

 the apical to the basal border, connecting up at the former with 

 a black annule. Segments 3 to 7 with a black, dorsal streak 

 expanding apically and pointed basall}^. where it fails to attain 

 the basal border of segment. Apically these streaks are connected 

 with black annules ; eighth and ninth segments all blue but with an 

 apical row of fine, black spines ; tenth segment blue, with a small, 

 hour-glass shaped, black spot on the dorsum. 



Anal appendages very minute and simple, the inferior scarcely 

 visible. Length of abdomen 23 mm. Length of hind-wing 16-17 

 mm. 



It is possible that these two insects are the sexes of a common 

 species of Argiocnemis, but after a careful comparison of the two 

 I do not think that this is so. 



Genus Himalagrion, gen. nov. 



The genus has some of the features of Agriocnemis but differs 

 chiefly in its large size, in the large number of postnodals and in 

 the position of the arc, which is opposite the 2nd antenodal 

 nervure. 



Node placed at the junction of the middle and basal thirds 

 of the wing, quadrilateral irregular, its distal angle sharply acute, 

 no intercalated sectors, stigma short, rhomboidal, ac midway 

 between the two antenodals, ab present, commencing just proxi- 

 mal to ac, arc opposite the second antenodal, Cu2 normal, post- 

 nodals numerous, reticulation moderately close. 



