6Q burmeister's odonata. 



12. L.ibellula loiigi|>eniii<« B. P. 850. [rdchi/diphix.] 



Von Mexico ; ein Weibchen in Germar's Sammlung. 

 One female (J) under the green drawer label " longipenis Burm. 

 Mexico" in B.'s hand, at Halle; no pin-label. 



1.3. liibellula stictica B. P. 8.50. [Trithemis.] 



nigra, fronte flava, summa cum tuberculo ocellari chalybsea ; thorace 

 flavo-guttato, supra pruinoso ; abdominis segmentis lineola duplici 

 flava; alis totis aqueis, stig'matibus nigris. Long-. 1,V'. 



Vom Port natal; ein Mannchen aus der Samrtjlung des Hrn. Drege. 



One male (J) under the blue drawer label "stictica Burm. Port. 

 Nat. Drg." in B.'s hand, at Halle ; no pin-label other than a bit of 

 unmarked blue paper. A description follows: 



% type. Vertex (artificially Hatteued) and upper surface of froiis dark me- 

 tallic blue. Eeiiiainder of frons. clypeiis, lips and rear of eyes and of occiput 

 yellow ; margins of lahrum and a median lahral band, the median labial lobe, the 

 inner third of the lateral labial lobes, two spots on the rear of the eyes and upper 

 surface of the occiput — black. Eyes in contact for a distance little more than the 

 antero-posterior dimension of occiput. 



Prothorax black, its hind lobe very small. 



Thoracic dorsum and sides superiorly pruinose; below yellow, with black 

 stripes on the lower ends of the humeral, the (obliterated) first, and the second 

 lateral sutures; the stripe on the last uniting on the pectus with its fellow of the 

 opposite side. 



Feet black, third tibiie with 12-1.3 anterior (exterior). 14 posterior (interior) 

 spines. 



Abdomen black, with yellow markings as follows — two apical dorsal spots on 

 2 ; 3-8 with a longitudinal stripe on each side of dorsum, interrupted by black at 

 the supplementary transverse carina on 3 and at rudiments (?) of the same on 4 

 and 5: sides of 1-3 except at transverse carinse. The abdomen, when viewed 

 from above, is slightly constricted at the base of 4, widening somewhat to the 

 apex of 7, narrowing to 10. 



Superior appendages as long as 9, black, apex fairly a('ute. a row of denticles on 

 the under surface. Inferior appendage almost as long, rather stout, apex obtuse. 



Genitalia of 2 : — anterior lamina not prominent, its margin entire: hamule and 

 genital lobe much more prominent. Hamule bifid, inner branch slenderer, 

 slightly longer, curved backward to form a hook ; outer branch straight, thrice 

 broader, apex obtusely rounded. Genital lobe about as prominent as the inner 

 hanuilar bi'auch, longer (dorso-ventrally) than wide (antero-posteriorly), nar- 

 rowing towards its apex (PI. 1, fig. 6). 



Wings: — Pterostignia blackish brown, surmounting one and parts of two other 

 cells, membranule small, blackish ; one submedian cross-vein, nearer the base 

 than is the first antenodal ; upper end of the arculus between first and second 

 antenodals; sectors of the arculus stalked; no hypertrigonuls : nodal sector not 

 waved; two to three double cells between the subnodal sector and the next fol- 

 lowing supplementary sector. Wings uncolored. 



Fro:it wiiigs: — 9 antenodals, the last one not continued to the median vein ; 7 



