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Show 1902.] DRAGONFLIES OF THE " SKEAT EXPEDITION." 69 strongly curved sectors and in having three or four cross nervules m the submedian space of fore and hind wings. A single specimen, a male, from Kwala Aring. POTAMARCHA OBSCURA (Ramb.). Potamarcha obscura, Kirby, Cat. Odonata, p. 180. Potamarcha congener, Selys, Ann. Mus. Genov. (2) x. p. 459. Potamarcha obscura, Karsch, Abh. v. d. Senckenberg. nat. Gesell. xxv. 1. p. 219. This species is common at Kwala Aring, where I took two females and several males. Closely allied to Lathrecista, it differs in having the eighth abdominal segment in the female dilated, and the triangle of the hind wing traversed. (See also Selys, loc. cit.) LATHRECISTA TERMINALIS Kirby. Lathrecista terminalis, Kirby, Cat. Odonata, p. 30. A single male from Kwala Aring. Recorded and described from Borneo. •LATHRECISTA SIMULANS (Selys). Lathrecista simulans, Kirby, Cat. Odonata, p. 30; Selys, Ann. Mus. Genov. (2) x. p. 458. Recorded from Borneo, Sumatra, Ceylon, Malacca, and Burmah. •AGRIONOPTERA LINEATA Brauer. Agrionoptera lineata, Kirby, Cat. Odonata, p. 31 ; Selys, Ann. Mus. Genov. xix. (1879) p. 302. Malacca. Philippines. •AGRIONOPTERA MALACCENSIS Selys. Agrionoptera malaccensis, Selys, Ann. Mus. Genov. xxvii. p. 461; Kirby, Cat. Odonata, p. 31. (This genus differs from the preceding in the absence of the supernumerary antenodal nervule of the front wings, and in having several cross nervules in the submedian space, as well as in the position of the base of the triangle of the hind wings, in front of the arculus. The two genera closely resemble each other in coloration.) •AGRIONOPTERA NICOBARICA Brauer. Agrionoptera nicobarica, Kirby, Cat. Odonata, p. 31. Singapore, Nicobar Is. * AGRIONOPTERA SEXLINEATA Selys. Agrionoptera sexlineata, Kirby, Cat. Odonata, p. 31. Recorded from Malacca. *CALOTHEMIS BIVITTATA (Ramb.). Calothemis bivittata, Kirby, Cat. Odonata, p. 42. |