140 Records of the Indian Museum. [VoL. XVITI, 
The gills and their protective lamellae have been somewhat 
crushed together, but appear to resemble those of P. robusta. 
Subgenus Anagenesia, Eaton. 
Adult with the fore-tarsus of the male shorter than the 
femur; the praebrachial nervure (6) of the fore-wing forked 
before the middle ; three conspicuous couples of longitudinal ner- 
vures (midway between 4 and 5, 5-6, and midway between 6 and 7) 
proceeding to the terminal margin of the fore-wing (pl. xx, fig. 24) ; 
the forceps with a long flattened basal joint and two shorter termi- 
nal ones, the latter sometimes with a small and imperfect third joint 
between them (pl. xx, figs. 17-20 and 25). 
Larva with the dorsal margin of the fore-tibia ( ? always) 
without conspicuous teeth (pl. xviii, fig. 8). 
Palingenia (Anagenesia) lata, Walker. 
Adult (pl. xx, fig. 17).—The Indian Museum collection con- 
tains pinned males from Sibsagar. See Eaton, 1892, p. 407. 
Palingenia (Anagenesia) picta, n. sp. 
Adult (pl. xx, figs. 24-25).—Two pinned males each about 22 
mm. long, from Kapit, Sarawak, 24.vil.10. This species differs 
from P. lata in its slightly larger size and in having the terminal 
joint of the forceps distinctly smaller than the penultimate. The 
most striking difference, however, is in colour, P. /ata being of an 
almost uniformly dull brown colour, whereas in P. picta the general 
colouration is bright reddish or yellowish brown, while the head 
is more or less black between the eyes, except for a strongly 
marked median brown line on the vertex; the mesonotum is 
almost equally dark; the wings are whitish with yellowish veins, 
the anterior pair having infuscate margins, especially in front and 
at the tips; the dorsal plates of the abdomen are somewhat. dark, 
except for a narrow posterior border. ‘The relatively pale prono- 
tum stands out in marked contrast to the dark head and mesono- 
tum. 
Palingenia (Anagenesia) robusta, Eaton. 
Palingenia robusta, Eaton, 1892, pp. 407-408. 
Adult (pl. xx, figs. 19-20).—The imperfect type male from 
Cachar, two dry and six spirit males and three spirit females from 
the Dikko River, Nazira, Assam. ‘The Dikko specimens were sent 
by Mrs. Maxwell, with the following information. They emerge 
annually at about the end of October, and for three or four days 
float down the river in countless millions. The natives say 
that they also appear on other rivers, such as the Desoi, Desang 
and Dihing, and that they come out at and under the edge of the 
water in the shallows after the rivers have left the hills and where 
they run through silt only ; but Mrs. Maxwell says that so far as 
