. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Notes on Dragon-flies (Odonata) of the Cape. 255 In the Silvermine Valley, the upper waters of which are dammed to form the Muizenberg Keservoir (Lakeside Plateau, Kalk Bay Mts.), there seems to be a colony which at first was considered to be Trithemis risi or stictica. Only a few specimens have been closely examined (2 $<$, 2 $$), but they all show the incomplete last Anq (sometimes oblique and disconnected either from C or Sc) (10J-13J <£, 9J $), the horizontal thoracic stripe, and both
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. Notes on Dragon-flies (Odonata) of the Cape. 255 In the Silvermine Valley, the upper waters of which are dammed to form the Muizenberg Keservoir (Lakeside Plateau, Kalk Bay Mts.), there seems to be a colony which at first was considered to be Trithemis risi or stictica. Only a few specimens have been closely examined (2 $<$, 2 $$), but they all show the incomplete last Anq (sometimes oblique and disconnected either from C or Sc) (10J-13J <£, 9J $), the horizontal thoracic stripe, and both sexes have 2 yellow spots on the labrium (larger in $ than in <J). The penis, however, agrees exactly with that of H. dorsalis. Typical dorsalis also occurs in the same locality, and the nymphs of the two forms are indistinguishable. Gen. Trithemis Brauer. 1921. Eis, loc. cit., pp. 387, 420. 1936. Fraser, loc. cit., p. 381. Imago.—Arculus proximal to 2nd Anq. More than 10 Anq, the last one in fore-wing incomplete. Sectors of arculus with common. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
