PHILIP P. CALVERT 369 



Dythemis dicrota. (139.) P. 269. June 15, 1889. Micrathyria didyma 



(Selysj. 



Se encontro cerca do Cfirdenas. Tamliieu en la Isla de Pinos y en la Isla de 

 Puerto-Rico. 



I have compared one male from Tekanto, Yucatan, and one fe- 

 male from Havana, taken by Baker, with Gimdlach's description 

 and they agree. The male which Giindlach describes was not yet 

 pruinose, its markings, therefore, being veiy similar to those of 

 the female. The nmneration of the abdominal segments is 

 that usually adopted by authors, as he says: "el 7o. con una 

 [mancha] grande casi cuadrada dividida por la linea intermedia 

 amarillento-verdes. " 



Gimdlach's descriptions do not permit one to decide whether 

 his didyma is the same as the true didyma Selys or whether his 

 dicrota is really didyma. As he refers his didyma and dicrota to 

 the didyma and dicrota of Hagen 1861, respectivel}", and as Hagen 

 stated^" that his dicrota of 1861 is the true didyma Selys, it is, 

 perhaps, more likely that didyma Guiidlach = /?n^enn Kirby and 

 dicrota Gund]ach= didyma Selys. 



Dythemis aequalis. (42.) P. 270. .June 1.5, 1S89. Micrathyria aequa- 



lis (Hagen). 

 Encontrada en lo.s contornos de Cardena.s. 



I have compared one male from Teapa, Tabasco, Mexico, and 

 one female from Cuba, sent by Poey, with Gundlach's description 

 and they agree; here also his numeration of abdominal segments 

 is the usual, although he says: "el segmento 7o. 6 antepeiuiltimo 

 con 2 manchas mayores triangular amarillas (la base del triangulo 

 esta en la base del segmento)"; 



Dythemis naeva. (75.) P. 271. Juno 15, 1889. Erythrodiplax here- 

 nice naeva (Hagen). 

 Cogida en la vecindad de CYirdenas. 



I have compared two males from C 'olon, ranama, and one female 

 from Guba, sent by Poey, 1863, with Gundlach's description 

 which agrees, after making allowances for differences in age, 

 except that in the males it is the last three al)dominal segments 

 instead of "los dos liltimos"- which lack the orange or yellow 

 spots. 



Dythemis debilis. (41.) P. 272. June 15, 18.S9 Micrathyria debilis 



(Hagen). ' 

 Ob.ser\ada en la vecindad de Cardena.s. 



=° Proc. Bost. See. Nat. Hist., xviii, p. 75, 1875. 



TRAX.S. AM. ENT. SOC, XLV. 



