1889.] MR. W. F. KIRBY ON NEW ODONATA. 2!)9 



Genus Psetjdogomphus. 



Male. Eyes contiguous, frontal tubercle slightly bifid ; labium 

 cleft. Wings long and rather pointed, triangles rather small, free, 

 those on the hind wings rather longer than those on the fore wings : 

 fore wings with 6-8 cross-nervures in the lower basal cell, and four 

 supratriangular nervures : hind wings with 2 or 3 supiatriangular 

 nervures, and .5 in the lower basal cell ; membranule rather large ; 

 inner margin concave between this and the anal angle. Abdomen 

 with the appendages of the second segment large, upper anal 

 appendages about as long as the lower, which is broad and trun- 

 cated ; at their base rises a strong vertical conical spine, pointed at 

 the apex. 



Probably allied to Cordulegaster, but very distinct from any 

 described genus. 



PSEUDOGOMPHUS INSIGNIS. 



Expl. al. 94 millim. ; long. corp. S3 niillim. 



Male. Dark brown, tinged with reddish, especially on the face 

 and pleura ; vertex punctured, siiining with green and violet ; thorax 

 green above and on the sides in certain lights; third segment of 

 flie abdomen yellow. 



Wings yellowish hyaluie, darkest at the edges ; pterostigma black, 

 covering rather less than 3 cells ; fore wings with IC-IH aiitenodal 

 and 10-12 postnodal nervures; tiiangles and sublriangular space 

 free. 



Hab. Cameroons. 



Anax striatus. 



Exp. al. lOomiUim. ; lat. al. ant. 12 rnilHm. ; lat. al. post. 17 

 millim. ; long. pter. 3 millim. ; long. corp. 75 miUim. 



Testaceous yellow ; head with the front raised, rugosely-punc- 

 tate, and marked with a blackish spot on the summit ; the region of 

 the oceUi, the lower edge of the nasus, and all the mouth-parts 

 reddish brown, more or less varied with yellow at the sutures. On 

 the thorax the septa are very strongly ridged, and are marked with 

 black in front and within ; there are also four black spots on the 

 depressions of the pleura ; legs reddish. Abdomen with the first and 

 second segments much swollen, the hinder half of the second seg- 

 ment with black markings diverging on each side of the carina ; the 

 following segments with two blackish spots at the base, two smaller 

 ones beyond the middle, and an irregular blackish stripe crossing 

 the cariJiia before the extremity ; the incisions are also marked with 

 black in the middle ; on the 7th and 8th segments these marks 

 become more suffused and irregular, and are not continued further. 



Wings very broad, clear hyaline, the space between the costal and 

 subcostal nervures filled up with smoky yellow, very dark at the 

 base, and ceasing, like the costal nervure, at the nodus ; the lower 

 basal cell is also stained with yellow as far as the lower triangle ; 

 pterostigma brown, very short. Fore wings with 20-2 1 antenodal 



