Occasional Papers of the Museum of Zoology 25 



The male of ocJiraccitui is described as near bcschkii; tlie 

 basal third of the labruni, middle lobe of prothorax, a central 

 spot on the posterior lobe, the dorsal thoracic carina and the 

 area below between the fork, black. Apparently the first 

 and last characters above enumerated separate it from 

 bcschkii, and the last character from dorsale ; the pale thoracic 

 dorsum separates it from triangulare. It is also described as 

 having the '"base of the abdomen" black with a median yellow 

 line. In this it is apparently different from all other species 

 in group 2 but obsolctuui. See text under cinnamomeiim. 



The profile of the female in the AI. C. Z. is like figure 65. 

 The arculus is distal to the cubito-anal cross-vein about .6 mm., 

 and the anal vein separates from the posterior border .7 to i.i 

 mm. distad to the cubito-anal cross-vein. 



9. Hctcragrion cinnamonicuui Selys 

 Figures 123, 124 



In the original description (de Selys i) ciiuiouwiiicimi was 

 doubtfully placed as a race of anraniiaciim. The material from 

 Bahia consisted only of males, according to the text, and was 

 in the de Selys and Hagen collections. It is not plain from 

 the text whether de Selys or Hagen was the author. At any 

 rate there is some confusion, since, if any male specimens 

 were in the Hagen collection, they have been lost, the species 

 being represented there by a single female which I have dis- 

 cussed at some length under ocJiraceum. In 1886 de Selys (2) 

 apparently regarded cinnaiiioiiicnin as a synonym of anrantin- 

 cnm, but in the text he indicated a difference by stating "C'est 

 probablement a la race ciinianionicuiii qu'il faut rapporter 

 une femelle etc.'' 



In de Selys' collection is a male, figured by IMenger (fig- 

 ures 123 and 124, which, among other labels, bears three 



