GEN] i; \ l'ANT.\!.\ a\d ti; A.MEA. 47 



6th segment ; perhaps a smaller one on 5th : the last is al 



tala; dorsum variegated with brown, I .' Legs similar bul 



olaws yellow, above the middle third : ternally densely ciliated, 



with long hairs ; tibia of fore legs on the apical two thirds externally and internally with 



similar hairs ; femur of fore legs with less long and dense hairs. 



\ te from Mr. Riley: "The uyinpba dwells among the green water charis, 



Leinna, Gtricularia ; it is transparent and beautifully mottled with pale green and dark 



ii darts rapidly and with vigor in water, often scampering and using mostly 



its four anterior limbs, which stroke in vitiisini ; the mottled green characters and form 



are the same in very young as in the full-grown." 



TRAMEA SPEC. (Supposition.) 

 McLachlan, Zool, ('..11 made bj II. .M. S. Petrel, Proe Zool Soc London, Feb. 6, 1877, p 8G, f. 2. 



A nympha from Galapagos Islands, 19 mm. long. 



McLachlan's description is very detailed, showing perfectly that it belongs to Tramea; 

 as the wing cases extend beyond the middle of the 8th segment, the nympha must be very 

 near transformation, and can from its small size belong only to a very small species. The 

 characters given in description agree well with T.Carolina. — which is. however, much 

 larger; but as nothing is said about the relative length of the joints of antennae and the 

 movable hook, a comparison with the species described above is impossible. Mr. McLachlan 

 indicates a new species of Tramea from Galapagos Islands, with " only a very small dark 

 anal spot on the hind wings, in this latter character differing from most of the species of 

 Central America, and of as large size almost as Pantala hyraenaea," but no description 

 is given owing to the bad condition of the specimens. The small size of the nympha 

 forbids any reference to the above mentioned imago. 



TRAMEA SPEC 



One nearly full-grown female nympha, one a little smaller, and a young one. all 

 from Itio Janeiro. Thayer Exped. Length 14 to 2."> mm. 



Similar to T. lacerata; eyes conical, laterally prominent; vertex narrow, transverse- 

 oval, part of forehead in front of it inflated, very little separated; groove behind vertex 

 shallow ; antennse very long, 4th joint two thirds the length of 3d, each of the fol- 

 lowing as long as 4th. Mask sprinkled with very fine black dots ; teeth similar to 

 T. lacerata ; movable hook very long, thin, reaching 6th tooth ; wing cases reaching 

 7th segment ; abdomen similar, lateral spines longer, of Stli segment extending beyond 

 10th, of 9th about as long as inferior appendages, which are very long, sharply pointed, 

 and hairy ; dorsal median one third shorter ; laterals a little shorter, and as usual 

 without hairs; claws pale colored, legs longer; hind legs much longer than abdomen 

 femur reaching 9th segment. May it not belong to T. basalis ? 



