298 MR. W. I'. KIRBY ON NKW ODONATA. [May 21, 



AGEIONID-E. 



Calopteuygin.*:. 



Sapho pulckella, ii . s Caraeroons. 



Agrionin^. 



Tatonicnm (g. n.) malgassiea , n. s Madagascar. 



Protostkfa (/racilis, n. s Meij;ic1o, Celebes. 



Lestes walkicei, n. s Sarawak, Borneo. 



Orthetrum camarense. 



Exp. al. 22 millim. ; long. corp. 49 millim. 



Male. Black, vertex metallic blue; abdomen inflated at base, with 

 the third segment pulverulent blue. Wings brownish hyaline : fore 

 wings with 19 antenodal and 14 postnodal cross-nerviires ; tlie 3 

 first postnodals not continuous; triangle traversed by one or two 

 cross-nervures ; one supratriaugular nervure ; 3 ceils in the sub- 

 triangular space ; three rows of post-triangular cells, increasing, 

 commencing on one side with four. Hind wings with 14 antenodal 

 and 13-14 postnodal cross-nervures, the base tinged with smoky 

 yellow, the menibranule dark smoky brown, and a basal stripe of the 

 same colour in the second costal space as far as the third cross- 

 nervure, and another in the lower hasnl cell, shorter, and not ex- 

 tending to the base of the triangle, which is traversed, though there 

 are no supra-triangular neivures on the hind wings. Tips of all 

 the wings slightly clouded with brown beyond the pterostigma ; 

 appendages of 2nd segment large ; ar.al appendages black, about as 

 long as the last two segments (the lower one as long as the others) 

 and of the ordinary form. Pterosiigma dark brown, covering 3 or 

 4 cells. 



firib. Cameroons. 



Allied to 0. albistyla, Selys, from «hich the darker wings and 

 black appendages will abundantly distinguish it. 



^thriamanta rezia. 



Long. Corp. 27 miUim. ; exp. al. 50 millim. ; long. pter. 2 

 millim. 



Male. Size, shape, and nenrption of the Indian ^-E. brevipennis, 

 Ramb., except that the sectors of the arculus lise from a short but 

 distinct stalk. The left fore wing has two tross-nervures instead of 

 one in the lower basal cell, and the triangle of the right fore wing is 

 traversed, and that of the left free. 



Body reddish above (probably bright red when liung), pectus and 

 pleura inclining to green, legs black, femora greenish beneath. Ab- 

 domen with the second and third segments carinated ; the dorsal 

 carina black on the fourth and following segments. Anal appendac-es 

 as long as the 8th segment ; lower appendage very broad, spatulate. 



Wings hyaline ; pterostigma olive, between black nervures ; hind 

 v^ings strongly and fore wings slightly tinged with yellow at the 

 base ; a dark streak in the lower basal cell, commencing beyond the 

 base, and filling up about two fifths of the length of the cell. 



Hob. Madagascar. 



