Gomphine Dragonjlies from South America. 181 



(3) a second female, without any skewer, which is probably 

 not conspecific either with the male or the first-named female. 

 The tliree specimens are labelled as follows: — (1) "35" 

 (white label), "Amazon" (white label), "Bates" (i^rt-en 

 label), ''^ AphyVa dentata, De Selys, ^J , a renvoyer" (l)iiff 

 label), "141, dentata^ Bate[s] " (white label, mark"d in 

 pencil); (2) "Amazon'' (white label), "Bates" (a;reen 

 \?iOQ\), ''• Ai:>}iylla dentnta^ De Selys, ?, a renvoyer" (buff 

 label); (3) ''' Amazon" (white label), ''Bates" (gieen 

 label), " Aphylla dentata, S., ? " (white label). 



The original description states tluit the male type was 

 obtained by Bates on " les bords de I'Amazone,'' and, as it 

 bears the number 35, it may be assumed that Santarem was 

 the exact place of ca[)ture, as it certainly was of other speci- 

 mens carrying the same number. In this specimen, at tiie 

 margin of tlie wing there are from two (right wings) to three 

 (left wings) cells between M2 and Rs, from three (hind wings) 

 to four (fore wings) between M3 and ^F^, and from five (hind 

 wings) to six or seven (fore wings) ceils between Cui and 

 Cn2. In the fore wings there are 19-20 antenodals and 

 14 postnodals ; in the hind wing 14-15 antenodals and 14-16 

 postnodals. 



A male in the British Museum collection which I consider 

 to be conspecific with the holotype o£ G. dentatus is labelled 

 "35" and "Brazil, Santarem, g-f " (Bates). Another male 

 in the same collection, labelled " 35 " and " Santarem, ^3 " 

 (Bates) may also belong to the same species, although the 

 anal appemlages are not identical with those of the holotype, 

 and the paired longitudinal veins are not so widely st parated 

 at the margin of the wing. A female Gomphoidi-s also in the 

 British Museum, labelled "35" and " Brazil, Santarem, ^," 

 is more likely to be the female of G. dentatus than either of 

 the two females associated with the liolotvpe in tlie De Selys 

 Collection. It was captured at the same place as the holotype, 

 and the abdomen is similar in the two insects, both as regards 

 general coloration and the dilatation of the penultimate and 

 antepenultimate segments. 



The female from Demerara in the MacLachlan Collection 

 doubifidly referred by De Selys to G. dentatus (Ann. Soc. 

 Knt. Belg. xxxviii. p. 17^, 18i)4) may very well belong to 

 an undescribcd species. 



