334 BIE. W. P. KIBBT — A EEVISION OF 



with only the tips of the mandibles, the spines on the legs, the under surface of the 

 tarsi, and the claws black. Wings of a slightly yellowish hyaline, with brown ner- 

 vures ; all the principal basal nervures red or reddish brown on the costa as far as the 

 pterostigma, and on the hind wings including all the nervures of the triangle ; fore 

 wings with 19-20 antenodal and 12 postnodal nervures; pterostigma yellow, long and 

 narrow, enclosed by brown nervures ; sectors of the arculus with a very short stalk ; 

 triangle moderate, crossed by two nervures, and followed by four or five rows of cells; 

 one supratriangular nervure ; hind wings with the triangle traversed, membranule 

 small, white. 



Hab. Mexico. 



Besides the colour, the very long pterostigma will at once separate this species from 

 B. foliata. The frontal tubercle is truncated, with a slight prominence on each side, 

 but not distinctly bifid. 



Belonia longipennis. 



Long. corp. 53 millim. ; exp. al. 108 millim. ; long. pter. 8 millim. 



Female. — Uniform dark brownish red, the abdominal carinse and the sides of the 

 foliation on the eighth segment of the abdomen black ; frontal tubercle distinctly 

 bifid. AVings yellowish hyaline, rather more clouded towards the tips, all the veins 

 blackish; fore wings with 20-21 antenodal and 14-15 postnodal nervures; sectors of 

 the arculus very shortly stalked ; triangle moderate, crossed by two nervures, and 

 followed by four rows of cells ; three supratriangular nervures ; pterostigma brownish 

 yellow between black nervures ; hind wings with the triangle traversed, and with one 

 supratriangular nervure, membranule grey, very small. 



Hah. CueuQa. 



The largest species, varying a little in its characters from the type of the genus. 



Peotoethemis celebensis. (Plate LIV. fig. 7 ; head, &c., Plate LVII. figs. 6, 6 a.) 

 Long. Corp. 55 millim. ; exp. al. 102 millim. ; long. pter. 5 millim. 

 Male. — -Head : frontal tubercle violet, strongly bifid, vertex inky black, very coarsely 

 pectinated above, smooth and yellow on the lower part of the sides next the eyes, and 

 with a smooth black longitudinal groove, widest in front, back of the head shining black, 

 with a yellow spot behind the occipital triangle, and on each side behind the middle 

 of the eye ; lower part of head yellow in front ; mandibles black, and the middle third 

 of the labium black. Thorax black above, with a double stripe on the suture of a 

 testaceous yellow, narrower behind, space between the wings dusted with blue ; pleura 

 with alternate stripes of testaceous yellow and dark brassy green. Legs black, femora 

 testaceous yellow beneath. Abdomen red (paler beneath, and second segment black, 

 with a pale spor on each side), the last two segments and the anal appendages black, 

 second and thii-d segments carinated, rather broad, with dorsal and lateral carina, the 



