368 gundlach's work on the odonata of cuba 



Genero DYTHEMIS Hagen 

 Dythemis ruflnervis. (o7.) P. 266. June 15, 1889. Dythemis rufiner- 



vis (Burm.). 

 Ldbellula rufinervis Burm.; Selys Cub. p. 1S7. 



Se encuentra en las islas de Cuba, Santo Domingo y Puerto Rico y es especie 

 comiin. 



I have compared one male from Cuba, from Poey, one female 

 from Cuba, from Dohrn, with Gundlach's description and they 

 agree sufficiently well, but in the phrase "una raya lateral en los 

 dos ultimos segment os [abdominales] negruzcas," "dos" should 

 be ''tres." 



Dythemis frontalis. (84.) P. 267. June 15, 1889. Scapanea frontalis 



(Burm.). 

 LiheUula frontalis Bui'm.; Selys Cub. p. 191. 



La he cogido en la sabana de Camarioca y en Rangel (jurisdicci6n de San 

 Cristobal) y el Dr. Scudder en la Isla de Pinos. 



I have compared one male from Havana, taken by Baker, one 

 female from El Cobre,.Cuba, and one male from Kingston, 

 Jamaica, with Gundlach's description and they agree. Nothing 

 is said in the latter, however, of the marked widening of the 

 abdomen in segments six to nine. In the description of the 

 female is the following: "El segmento 11 deja ver solamente 

 dos manchitas mayores superiores y 2 pequenas laterales [ = seg- 

 ment 8]. El ultimo segmento [ = segment 10] y los apendices 

 caudales son negros sin mancha." 



Dythemis didyma. (17.) P. 268. June 15, 1889. Micrathyria hagenii 



Kirby. 

 LiheUula didyma Selys Cub. p. 191. 



La he cogido en la cercania de Ciirdenas y en Rangel (San Crist6bal). 



I have compared one (younger) male from Atoyac, Vera Cruz, 

 Mexico, one (older) male from Saniana Bay, San Domingo, and one 

 female from Havana, taken by Baker, with Gundlach's description 

 which is good. By "el tercer segmento [abdominal] en el macho 

 con dos manchitas chicas, en la hembra una grande . . . 

 verde," he evidently means as much of segment two as lies pos- 

 terior to the transverse carina. Rather puzzling it is that he 

 should write of the seventh segment as the antepenult: "El seg- 

 mento antepenultimo tiene dos manchas mayores casi cuadradas 

 de un color verde-mar." 



See the remark under the following species. 



