TrIACANTHAGYNA ANi> GvNACANTUA I5 



13'. Auricles of male larger, brilliantly colored ventrally, the black edge produced 

 anteriorly on the ventrum to the level of the hamular process ; ventral carina 

 on 2 with a row of scale-like teeth anterior to the point of convergence. Fe- 

 male with abdomen constricted at 3; lateral carina on 2 elevated at the point 

 corresponding to the auricle in the male klagcsi. 



14 {9'). Male usually with a row of small scale-like teeth on the ventral carina 



of the second segment anterior to the point of convergence ; the lateral carina 

 on the same segment, posterior to the level of the apex of the auricle, black or 

 dark brown. Female with the lateral and ventral carinae on abdominal segment 

 3 only very slightly converging just anterior to the level of the transverse 

 carina tenuis. 



14'. Male without teeth on the ventral carina of abdominal segment 2; lateral car- 

 ina on the same segment, posterior to the level of the apex of the auricle, pale 

 colored. Female not known caiidata. 



15 (8'). Tarsi of four posterior legs striped yellow dorsally ; sternum of abdomin- 



al segment i with a low median posterior tubercle ; abdominal appendages yel- 

 low. Apical abdominal segments of male yellow or yellowish tibiata. 



15'. Tarsi of all the legs black or with the merest trace of yellow ; no tubercle 

 on sternum of abdominal segment i. Apical abdominal segments and append- 

 ages of male black ; female not known jessei. 



16 {7' ) . A wide* black stripe covering the posterior third or more of the metepimer- 



on ; wings hyaline or with the merest trace of color near the costal margin. 

 Male with the abdomen greatly constricted at segment 3. Female with the 

 lateral carina on segment 2 distinctly black mexicana. 



16'. No distinct wide black stripe on the metepimeron. Lateral carina on seg- 

 ment 2 on the female not distinctly black. Males, paragraph 17; females, 

 paragraph 22. 



17 (16'). Abdominal segment 3 greatly constricted as seen in dorsal view, the 



lateral and ventral carinae fused or in juxtaposition at the level of the trans- 

 verse carina and for a short distance anterior to that point 18. 



17'. Abdominal segment 3 slightly or not constricted as seen in dorsal view, the 

 lateral and ventral carina; separated throughout their length jo. 



18 (17). Wings with a longitudinal stripe of color near the costal margin from 



base to apex, darker basally, shading out apically interioris. 



18'. Wings without a costal colored stripe 



.19. 



19 (18'). Smaller, hind wing 42-43, venation less complex, two rows of cells 



between the anal loop and the hind margin of the wing. Cuba and the Baha- 

 mas creagris. 



19'. Larger, hind wing 48-50, venation very complex, three rows of cells between the 

 anal loop and the hind margin of the wing. South American litoralis. 



20 (17'). Wings hyaline or uniformly brownish tinged; lateral and ventral carinae 



on abdominal segment 3 approaching at the level of the transverse carina, but 

 distinctly separate and diverging anteriorly from this point nervosa. 



20'. Wings with a distinct stripe of color near the costal margin ; lateral and ventral 

 carinse on abdominal segment 3 widely separated throughout their length and 

 only slightly approaching anterior to the level of the transverse carina 21. 



21 (20'). Color on wings confined to near the costal margin bifida. 



