288 ME. W. F. KIEBY — A EEVISION OF 



eighth segment, moderately stout, the lower appendage distinctly shorter ; appendages 

 of the second segment moderately conspicuous. 



Type Libellula lydia, Drury. 



I provisionally include L. pulchella, Dru., in this genus, though this species has 

 some resemblance to Holotania. 



Genus 41. Belonia, g. n. 

 (Plate LIV. fig. 4.) 



Frontal tubercle incised above ; eyes contiguous ; abdomen very stout, somewhat 

 depressed, of equal thickness from the base to the eighth segment in both sexes, 

 considerably shorter than the hind wings ; the lateral carina? very strongly marked, 

 segments 2 and 3 transversely carinated, segment 8 strongly perfoliate in the female : 

 wings generally rather short, pterostigma moderate or long; fore wings with 16-21 

 antenodal and 12-15 postnodal nervures, the first four postnodals not continuous, 

 cells of the postnodal area simple, triangle moderately long, just beyond that of 

 the hind wings, crossed by two or three nervures, the base hardly oblique, followed 

 by 4-6 rows of cells, decreasing to three or four, and then increasing, 1-3 supra- 

 triangular nervures, one cross nervure in the lower basal cell, subtriangular space 

 consisting of 5-8 cells, sectors of the arculus rising from a point or from a very 

 short, thick stalk, moderately curved at the extremities, nodal sector hardly waved at 

 the base, but considerably in the middle, subnodal sector hardly waved, two, and some- 

 times three, rows of intermediate cells towards the hind margin ; hind wings slightly 

 broader than the fore wings, with 12-16 antenodal and 14-16 postnodal nervures, the 

 first four not continuous, triangle traversed by one (exceptionally two) nervures, and 

 followed by three or four rows of cells, often d( creasing to two or three, and then 

 increasing ; a supratriangular nervure frequently present, two cross nervures in the 

 lower basal cell, sectors of triangle united at base : anal appendages of the male rather 

 shorter than the last two segments, and considerably thickened before the extremity ; 

 lower appendage broad and slightly indented at the extremity ; appendages of the 

 second segment not very conspicuous. 



Type Belonia foliata, sp. n. 



One or two described North-American species, such as Libellula saturata, Uhl., and 

 luctuosa, Burm., appear to be congeneric, though the abdomen is more slender and some- 

 what tapering. In these species, too, the first antenodal is generally not continuous. 



Genus 42. Holotakia, g. n. 



(Neuration, Plate LVII. fig. 2.) 



Frontal tubercle elevated, sloping forward, attenuated and concave at the apex ; 



eyes contiguous in front ; abdomen long and slender, about as long as the hind wings, 



hardly thickened at the base, not narrowed, even in the male, till segment eight, 



