296 MR. W. F. KIRBY — A REVISION OF 



traversed, followed by two rows of cells, increasing, one supratriangular nervure, three 

 cross nervnres in the lower basal cell. 

 Type Thermochoria equivocata, sp. n. 



Genus 55. Uracis. 

 Ramb. Ins. NeVr. p. 31 (1842) ; Brauer, Verb, zool.-bot. Ges. Wien, xviii. pp. 365, 727 (1868). 



Frontal tubercle slightly concave ; eyes contiguous in front ; abdomen slender, of 

 uniform thickness, and rather shorter then the hind wings, not thickened at the base, 

 segments 2 and 3 carinated, segment 8 not perfoliate in female, pterostigma long; fore 

 wings with 12-13 antenodal nervures and 10-13 postnodal nervures, the last antenodal 

 and the first two or three postnodals not continuous, cells of the postnodal spaces 

 generally more or less bisected or reticulated beyond the pterostigma, triangle moderate, 

 traversed, followed by three rows of cells (sometimes two), subtriangular space consisting 

 of three or four cells, sectors of the arculus stalked, moderately curved at the extre- 

 mities, one to three supratriangular nervures sometimes present, lower basal cell with 

 one to six cross nervures, nodal sector undulating at the base, subnodal sector nearly 

 continuous, but with the curve more flattened than usual in the middle, cells between 

 the nodal and subnodal sectors bisected towards the hind margin ; hind wings with 

 10-12 antenodal and postnodal nervures, the first two postnodals not continuous, the 

 triangle traversed, followed by two and more rows of cells, its base is sometimes on a 

 level with the arculus, and sometimes one fourth of the distance from the arculus to 

 the tip of the triangle, one supratriangular nervure generally present, lower basal cell 

 with three to five cross nervures, sectors of the triangle united at base or occasionally 

 rising from a very short stalk : anal appendages of the male slender, as long as the 

 eighth segment; appendages of the second segment moderately prominent. 



Type Libellula imbuta, Burm. 



I have not been able to examine a sufficient series of the few described species of the 

 genus to venture to subdivide it ; but I doubt if L. infumata, Ramb., which Brauer 

 places here, is really congeneric. The triangle of the hind wings falls considerably 

 beyond the arculus, and is followed by two cells (or, rather, a large one bisected), and 

 then a row of single cells, afterwards increasing. 



Genus 56. Misagria, g. n. 

 (Plate LII. fig. 9 ; details, Plate LVII. figs. 8, 8 a.) 

 Male. — Frontal tubercle convex ; eyes contiguous ; abdomen rather slender, nearly as 

 long as the hind wings, considerably and suddenly thickened at the base, and each 

 segment thickened at the extremity to the seventh, eighth and ninth as broad as the 

 extremity of the seventh, segments 2-4 carinated : wiugs and pterostigma rather long ; 

 fore wings with 16-17 antenodal and 12 postnodal nervures, the first three postnodals 

 not continuous, cells of the postnodal area simple, triangle small, on a level with that 



