PHILIP P. CALVKKT. 79 



9 (type). General color dark luteous, faded, lips brighter. Tip of vertex 

 bifid, eyes barely toui-hino; above. Hind lobe of the prothorax nearly as wide as 

 the middle lobe, entire. 



Tiiorax perhaps green in life; a blackish antehumeral stripe not reaching the 

 front wing-base. 



Third tibiae with 8 anterior (external), 8 posterior (internal) strong spines. 



Abdomen, viewed from above, swollen at 2 and 3. slightly constricted behind 

 the base of 4, of approximately equal width in 5-10. Viewed from the side, it 

 is greatly swollen at 2 and 3 Probably an elongate yellow spot on each side of 

 dorsum of 4-7 in life. Ventral surface partly pruinose. 



Appendages pale, slightly longer than 10, shorter than 9. Vulvar lamina pro- 

 duced into an erect, triangular and very prominent trough-like piece. 



Wings : reticulation blackish-brown, many cross-veins paler. Pterostigma 

 luteous, surmounting one and parts of two other cells. Menibranule cinereous, 

 paler at extreme base. Upper end of arculus between first and second anteuo- 

 dals, no hypertrigonals, nodal sector not waved, only one row of cells between 

 the subnodal sector and the next following supplementary sector, one submedian 

 cross-vein, sectors of the arculus stalked. 



Front wings: — Submedian cross-vein on a level with the first antenodal : 14 

 (right) 13 (left) antenodals, the last not continued to the median vein; 9 (right) 

 10 (left) postnodals: internal triangle 3-celled, discoidal triangle with one cross- 

 vein, three posttriangular rows increasing at the level of the nodus. Only the 

 barest trace of yellow at the base of the wings. 



Hind wings: — Submedian cross-vein nearer the base than is the first ante- 

 nodal ; 9 (right) 10 (left) antenodals, 11 postnodals; no internal triangle, discoidal 

 triangle free, its basal side in the prolongation of the arculus; two posttriangular 

 rows between the short sector and the first sector of the triangle, sectors of the 

 triangle sei)arated at their origins. Yellow at the base of the wings reaching to 

 the submedian cross-vein and back to the apex of the membranule, i)ut the cen- 

 tral parts of the cells are clearer. 



Total length 40 mm., abdomen 28, appendages .6 mm., third til)ife 5. .5, front 

 wing 33, hind wing 32, pterostigma 4. 



Mr. Kirby (Cat. Odon. p. 39, 1890) has referred this species to 

 Lepthemis. The proportions of wings and abdomen agree rather 

 better with those of Mexothemis or Erythemis, and until more defi- 

 nite distinctions are drawn between these two it seems best to call 

 this species Mesothemis pleheja. 



51. Ijibelliila di^iColor B. P. 856. [Orthemis ferruginea Fab.] 

 •J, 9 . In Brasilien ; 



One male (j), one female (j), below thegreeu drawer-label "dis- 

 color * S ct 9 Bras. V. W." in B.'s hand, at Halle; no pin labels. 



52. Ubellula calTra B. P. 856. [Orthetrum.] 



cinereo-flava, vitta thoracis dorsali et lateral! duplici albida ; alls in 

 summo apice paululum fuscis, stigmatibus fulvis. Long. IV'. 

 % . genitalibus superioribus valcle prominulis. 

 9 . abdominis segmento octavo utrinque appendiculato. 

 Vom Port natal, aus der Sendung- des Hrn. Dr'ege. 

 One male (j), one female (T), under the blue drawer-label " caffra 



TRANS. AM. ENT. .'iOC. XXV. SEPTEMBER, 1898. 



