318 MR. W. r. KIEBY — A REVISION OF 



Allied to T. limhata, Desj., and erythrcea, Brauer. The only specimen of Tramea 

 which we possess from Mauritius has yellowish-hyaline wings with black nervures, a 

 wider band on the hind wings, more dentated on the outside than in madagascariensis, 

 and a large vitreous space on the inner margin. It agrees with Rambur's T. mauri- 

 ciana, except that Eambur does not mention the vitreous spot ; nor does Desjardin, 

 whose description is very vague, though his species may be regarded as identical with 

 Rambur's insect. From Rodriguez we have two specimens of Tramea ; one agrees 

 with the Mauritian specimen of T. Unhata, just mentioned, and the other is a new 

 species (allied to T. erythrcea, Brauer, which the British Museum does not possess), but 

 which cannot be confounded with any other species on account of the shortness of the 

 anal appendages. It is, however, too much damaged for description. 



Tramea madagascariensis S {\). 



Differs from the male in the shape of the opaque patch of the hind wings, which is 

 very similar to that of the Australian T. rosenlergii, Brauer. It extends along the 

 lower basal cell to the point of departure of the first subbasal sector, and then drops 

 downwards, and curves inwards towards the inner margin at hardly two thirds of the 

 length of the wing, but leaving the whole inner margin and even a large space between 

 the band and the lower end of the white membranule free, and several of the cells on 

 the edges of this small dark stripe, which it partially invades, are otherwise yellowish, 

 instead of clear hyaline ; the triangle of the fore wings is crossed by two nervures, and 

 is followed by four rows of cells. The anal appendages are nearly as long as in the 

 male, black, with the base reddish, straight, and slightly convergent. 



It is possible that this insect is the female of an allied species; but it so closely 

 resembles the male of T. madagascariensis that I should hesitate to describe it as new, 

 unless the arrival of more specimens should show that the difference in the shape of 

 the dark band of the hind wing is constant in both sexes of each. 



Miathyria pusilla. (Plate LII. fig. 3.) 



Long. Corp. 28-30 millim. ; exp. al. 55-60 millim. ; long. pter. 2 millim. 



Reddish testaceous, sides of the thorax probably varied with yellowish and black 

 markings in fresh specimens. Abdomen with a black spot at the end of the third and 

 following segments of the abdomen above, sometimes coalescing into a continuous 

 black dorsal stripe. Legs reddish brown, more or less of the femora, especially beneath, 

 duU yellow. Wings clear hyaline with brown or reddish nervures ; pterostigma dirty 

 white ; fore wings with 7 antenodal and 5 postnodal nervures ; hind wings with 4 ante- 

 nodal and 6-7 postnodal nervures ; hind wings with a brown blotch (in which the 

 nervures are white) at the base, beyond the pure white membranule, but not extending 

 to the anal angle ; between the membranule and the bltoch are one or two nearly 

 colourless cells. 



Hah. Santarem, Tapajos. 



