422 Mr. R. M'Lachlan on some Odonata 



tion moderate, blackish, the costa and nodal vein con- 

 spicuously yellowish, and most of the ante- and postnodals, 

 and the nervules in the basal portion of the wing- are yellowish 

 if seen in certain lights ; subnodal sector furcating before the 

 level of the pterostigma, with 3 or 4 rows of cellules between 

 its branches and 6 cellules on the margin ; 3 cellules between 

 the subnodal and interposed sector at the widest part, ending 

 in one for some distance ; a single row between the sectors 

 of the triangle in the anterior, ending with 4 on the margin ; 

 two rows for the space of three cellules near the base in the 

 posterior, then one, ending with two on the margin ; no basal 

 subcostal nervules ; 13 antenodals and 9 postnodals in the 

 anterior and 9 ante- and postnodals in the posterior ; 3 (rarely 

 4) cellules in the principal triangles, 1 in the inner ; 2 or 3 

 supra-trigonals ; 2 or 3 nervules in the median area ; anal 

 triangle 3-celled. 



$ . Similar to male ; the abdomen not becoming darker 

 towards the apex, and the spots above are found only on 

 segments 8 to 10, occupying the whole of 10 excepting a 

 narrow median line ; the lateral spots are conspicuous on 

 segments 6 to 8. Appendages black, formed nearly as the 

 anterior in the male, but very short (2 millim.) ; tenth ventral 

 segment with numerous minute black teeth nearly all over 

 its surface. 



Wings as in male, but the costal portion appears yellowish 

 owing to the more decided pale coloration of the costal ner- 

 vules ; pterostigma yellowish ; 13 ante- and 8 postnodals in 

 anterior, 10 ante- and postnodals in posterior. 



[An immature female has a semilunate pale spot on each 

 side of the second segment on the false suture ; the dorsal 

 apical spots are visible only on 9 and 10 and the basal lateral 

 only On 8 ; the wings are much tinged with yellowish. Pos- 

 sibly a distinct species.] 



Length of body, ^ {cum append.) 40, ? 44-4:7 millim. ; 

 length of posterior wing, (^ 37, $ 38-39 millim., greatest 

 breadth, ^ 12, ? 13 millim. 



Ilab. Cape of Good Hope, one male and one female; 

 Knysna (Cape Colony), one female. 



JEschna suhpupillata^ sp. n. 



^ . Face dingy yellow ; top of the front with a fuliginous 

 maro'in which expands on the sides above, forming a segment 

 of an arc in which is enclosed a large black spot, the base of 

 which is seated on the vesicle, and the apex acute but not 

 reaching the margin (hence there is no T-spot) ; vesicle 



