18S3. ] 



12& 



A. speratus. 



Unterlippe, Oberlippe, und Rhina- 

 rium schwarz. 



Kopf hinten scliwarz. 



Obere Appendices. Die obere Flache 

 durclisetz ein gewulsteter breiter Mittel- 

 kiel, der sich gleicli an der Basis vom 

 Aussenrande ablest, und schrage gegen 

 die Spitze geht. An seinem Ende am 

 Innenrande im breitesten Theile des 

 Ausschnittes vor der Spitze endet er 

 seitlich in eiiien kleinen scharf nach 

 innen gebogenen Hakenzahn. 



Unterer Appendix kurz vor der 

 Spitze etwas eingezogen. 



Scheiikel rothlicli mit schwarzer 

 Spitze. 



Geader braunlich. 



Pterostigma gelbbraun. 

 Membranula scliwarz mit weiss- 

 lieher Basis. 



18 Antecubitales. 



Hab. : Cap der guten Hoifuung. 



A. Ruth erf or di. 



Front and mouth parts (excepting 

 the black tips of the mandibles) uni- 

 formly pale yellowish. 



Back of head brownish-yellow. 



Superior appendages. The keel of 

 the upper surface ends at the extreme 

 portion of the dilated apex, and there 

 forms a small, nearly obsolete, tooth ; 

 there is no tooth in the excision of the 

 inner margin in the place indicated. 



Inferior appendage gradually nar- 

 rowing from base to apex. 

 Femora entirely red. 



Neuration reddish-brown up to the 

 nodus, merging into black beyond the 

 nodus. 



Pterostigma dark brown. 



Membranule grey, whitish at the 

 base. 



20 antecubital nervules. 



Hah. : Sierra Leone. 



In size, general coloration, and other points, A. Butherfordi quite 

 agrees with the description o£ speratus, but it appears to ine impossible 

 to believe that long immersion in alcohol could so have changed the 

 coloration of the front as described for speratus, and the structure of 

 the appendages appears to be also different, although the general 

 peculiar plan is the same in both. Some points compared in the above 

 table are of slight importance ; the coloration of the face and the 

 discrepancies in anal structure are the principal. 



N.B. — Notes by the late Mr. Eutherf ord on the living insect say : 

 ." Head coffee-brown. Eyes blue. Thorax : front brown, sides tes- 

 taceous, beneath paler. Abdomen : ridge and margins of joints 

 blackish-brown, otherwise light brown, shining. Taken in a marsh at 

 Sierra Leone." 



Anax longipes, Hagen. In the Ent. Mo. Mag., x, pp. 227, 228 

 (March, 1874), I published some notes on a male Anax in the collection 



