SYiS^OPSIS OF SPECIES DESCRIBED. 39 



22. N. Vinosa Say. (Supposition.) 



Nymphoe, full-grown, male and female. United States. 



Similar to G. furcillata. Characters of genus : processes prominent, sharp, of equal length, 

 enclosing less than right angle ; body rough. 



DIVISION II. — Antenn.e Six-jointed. 



Epiceschna Selys. 



Similar to zEschna ; antennte six-jointed ; lateral spines on segments four to nine ; in- 

 ferior and middle appendages of equal length. 



23. E. Heros Fabr. (Eaised.) 



Nymphfe, full-grown, male and female. United States. 



Characters of genus : processes long, the posterior half as long as anterior, not much sep- 

 arated ; middle appendage a little notched at tij). 



DIVISION III. — Antenn.e Five- jointed. 



.ffischna?? 



24. Species Nova 



Nympha, male. La Guayra, Venezuel.a, and Chili. 



Genus and species very abnormal. Cf. the description. Perhaps belonging to Gomphina 

 and to genus Petalia. 



