130 Mr. H. Campion on some 



suberect macrotiicliia round the tip and in the second radial 

 cell. Costa extending- beyond two-thirds of the wing-lengtb ; 

 two radial cells, botli rather elongate and about equal in 

 length. Media sessile, forking at level of r—m cross-vein. 

 Cubitus ("postical" of Kieffer) with the base of its fork 

 proximal to that of the media. Anal vein bent some distance 

 before its tip, a rather indistinct fold arising from the bend, 

 giving an appearance of forking (as in Palpomyia, Bezzia, &c.) . 

 The genus Ceratopogon will fitly take its place among the 

 group of small genera which are intermediate in soive respects 

 between the two main groups of the subfamily, agreeing in 

 liabits with Kempia and Atridwpogon^ but in structure 

 approaching nearer to Johannsenomyia and Stilobezzia. 

 From the former of these it differs in the shorter, equal, 

 radial cells and the presence of macrotrichia at the tip of the 

 wing, and from the latter in the sessile media and in some 

 other points. 



XVJI. — Some new 07' little-known Gomphine Dragonjlies from 

 South America. By Herbert Campion. 



[Plates VI. & VII.] 



While engaged from time to time in identifying dragonflies 

 from British Guiana, 1 have found it necessary to consider 

 related species from other parts of the Neotropical Region. 

 ParticuUus of certain members of the subfamily Gompliinae 

 which have been studied in this way are now placed on record. 



Gomphoides dentatus^ Selys. 

 Aphylla dentata, Selys, Bull. Acad. Belg. (2) vii. p. 647 (1859). 



I have pleasure in acknowledging my indebtedness to 

 Monsieur G. Severin, Conservateur au Musee Koyal 

 d'Histoire Naturelle de Belgique, for his great kindness in 

 allowing me to examine the original material of this species, 

 besides prepiuing for me photographs of the wings and anal 

 appendages ot the male type (PI. VI. figs. 1 & 2). The 

 material in question consists of (1) a male, the type oi the 

 species, throngh the abdomen of which a fine skewer has 

 been passed, to give it additional support ; (2) a female, 

 also skewered, which may be conspecific with the male ; and 



