38 E. B. Williamson 



Gynacantha crcagris Gundlach 



II. 



Abdomen male 43-44.5, female 45-46; hind wing male 42-43, female 

 43-46; superior appendage male 6; stigma front wing 3.5-4. 



The above data is from Calvert. I have seen no additional specimens 

 and have nothing to add to his discussion of this species. It has been 

 taken only in Cuba and the Bahamas. 



Gynacantha mcxicana Selys 

 6, 10, 25, 26. 



Abdomen male 49-52, female 49-51 ; hind wing male 46-48, female 47-50; 

 superior appendage male 6-6.6, female 7.5-9; stigma front wing 4.6-5.1, 



Wings hyaline to brown tinged, slightly to distinctly brown at base 

 between C and R+M, darker between Sc and R-fM, as far as or slightly 

 beyond the first antenodal ; more or less distinctly yellowish between Sc and 

 R+M to the nodus, and between C and R beyond the nodus; this longi- 

 tudinal stripe usually most evident in wings otherwise hyaline, but even in 

 some hyaline wings no trace of it exists. 



In the male there are nine to fifteen scale-like teeth in a row on the 

 ventral carina of segment 2 anterior to the convergence of the margins of 

 the fossa, and teeth are absent or there may be as many as five on the 

 prominence, near the apex of the segment, where the lateral and ventral 

 carinae meet. There are four or five denticles on each auricle. The 

 abdominal appendages of the female have the outer edge relatively straight- 

 ened and the inner curved, the widest point slightly distal to the middle, so 

 the basal half of the appendage is more tapering than the apical half ; a very 

 faint longitudinal median dorsal carina; maximum width 1.5; extreme apex 

 acute. The appendage is thus distinctly different from such other species as 

 nervosa and interioris. 



The following notes on living colors were made from specimens col- 

 lected at Bejuma and Palma Sola. Male. — Eyes above dark brown (or dark 

 green), almost black, with a small (or large) green reflecting area in front 

 on either side, which green area may be wanting in the female ; below light 

 brown (with a slight yellowish cast), with one large black and about five 

 dark brown pseudopupillae ; rear of head pale dull yellow, narrowly black 

 above, with a broad band of black to the foramen. 



Prothorax light flesh brown, middle lobe with a bluish cast. Thorax 

 above bright (or dull) olive green, clouded with brown ; a narrow rich brown 

 mesothoracic half collar which is bordered below by a slightly narrower, 

 narrowly interrupted, bright yellowish green half collar; above the brown 

 half collar the thoracic green is brightest and clearest, and on its outer edges 

 are traces, more or less, of a dorsal brown stripe which is definite only 

 opposite and immediately adjacent'to the green; mesepimeron above green, 

 below brown ; metepisternum brown, restricted green above ; metepimcron 



