1916. | F. F. LAipLAw : Indian Odonata. 133 
Prothorax and thorax rusty yellow above, fading to pale yellow 
at the sides and underneath. 
Abdomen entirely reddish-orange above and at the sides, yel- 
low ventrally. 
Legs yellow with black spines. 
Anal appendages dark reddish-brown in colour, black at ex- 
tremities. The upper pair are distant to each other and parallel, 
seen in profile they are a little narrowed basally so as to be some- 
what club-shaped, each carries a fine black point distally, which is 
directed downwards. The lower pairs are larger, directed upwards 
and taper regularly to their apices. They lie internally to the 
upper pair. The excision on segment 10 is small and shallow, 
bluntly angular; barely one third as deep as the segment. The 
floor of the excision is formed by a shelf-like ridge which in the 
middle line has a small tongue-like projection directed backwards. 
@. Head greenish-brown above, paler below, eyes similarly 
coloured but of a greener tone. 
Prothorax and thorax gtay-green above, yellowish-white below. 
Abdomen dull, greenish-brown above, paler below. 
The species differs from the closely allied C. evubescens, Selys, 
chiefly as follows :—in colour; it is smaller, and the excision on 
segment 10 of the abdomen is bluntly angular, narrow, and its floor 
has the curious little tongue-like projection noted above. The anal 
appendages of the males of the two species differ in detail. 
C. erubescens appears to be a more eastern species and I can- 
not find that it has been recorded from India. (See Ris, Abhandl. 
d. Senckenberg. Natur}. Gesellsch., Bd. XXXIV, p. 519, taf. xxiii, 
figs. 13, 14). 
The holotypes 7 ¢@ will be returned to the Indian Museum; 
paratype ¢@ in my collection. . 
Ceriagrion olivaceum, Laidlaw. 
Ceriagrion olivaceum, Laidlaw, Rec. Ind. Mus., VIII, 1914, p. 345 
pl. xvi, fig. 9. 
This is the largest of the four species recorded from the 
Indian Empire. It appears to be confined to Upper Burma and 
Assam. 
A female specimen from Nurbong, Assam, sent to me by Mr. 
Stevens, has only 12 post-nodal nerves on the fore-wings. 
Like the other Indian species it has the wings petiolated to 
the level of the basal post-costal nerve. 
Ceriagrion cerinorubellum (Brauer). 
Cer Bae cerinorubellum, Kirby, Cat. Odonata, p. 154. 
it Kruger, Stettin Entomol. Zett., 1898, p. 119. 
Ris, doc. cit., p. 519. 
g9 7. Kierpur, Purneah District, Bihar, 19-ix-15 (C. Paiva) 
‘“ resting on weed in stream.’’ Nos. nae fi: 
