new Species of Odonata. 27 
slender towards the black apex; viewed from beneath they 
approximate at the base and then gradually diverge, the apices 
slightly incurved. ’ 
2 unknown. 
Length of abdomen (cum append.) 33 millim.; expanse of 
wings 40 millim.; length of posterior wing 19 millim. 
Hab. Madagascar. One male. 
Having some resemblance to the preceding species in the 
form of the dark bands of the thorax above and pale ground- 
colour, but differmg very much in the structure of the 
appendages. 
Lestes unicolor, sp. n. 
Wings hyaline or with a very slight smoky-yellowish 
tinge. Pterostigma dark brown (more ochreous in the female), 
between strong black nervures, three times as long as broad, 
surmounting two cellules ; 11-13 postnodal nervules. Neura- 
tion black. 
Nearly the whole upperside of the body brown, the sides 
and beneath paler, more yellowish (in some examples are 
faint indications of darker humeral lines) ; a small isolated 
elongate black spot on either side of the pectus close to 
the pectoral area; a slender darker annulation just before 
the apex of segments 2 to 7 above, extending to the sides ; 
some black marks on the first abdominal segment beneath, 
and the ventral suture narrowly black. Legs yellow; a 
blackish line (partly double) on the intermediate and anterior 
femora and tibiz ; spines (those on the tibie very long) black ; 
tips of tarsal joints and claws black. 
6. Hinder margin of ninth segment with minute black 
denticulations ; a slight carina on the dorsal surface of the 
tenth segment, not reaching the base, followed by a triangular 
excision of the margin, the edge of which bears black denti- 
culations. Superior appendages stout, longer than the tenth 
segment, yellow, the short, blunt, inturned apical portion 
black, the outer edge with 4-5 small black denticulations just 
before the inturned portion ; inner edge with a strong black 
triangular tooth near the base at the commencement of 
a rather broad flattened dilatation, the edge of which is 
straight, ending in an angle scarcely produced into a (second) 
tooth, with minute serrations, and closely followed by another 
slight projection just before the constriction. Inferior 
appendages, viewed from above, extending to the basal tooth 
of the superior, distant, cylindrical, blackish, and furnished 
with black hairs on the tips; viewed from beneath, the basal 
