1868.] 373 [Hagen 



ogists as Dr. Imlioff in Bale and the late Senator von Heyden in 

 Frankfort to state erroneously that the fore and hind wings are united. 

 Pictet has founded the genus on a female in dry state from Brazil, 

 O. anomala. Dr. Imhoff has since described 0. Rhenana, which 

 swarms in a great part of Central Europe. Probably the pair from 

 Hungary, described by me in the Stettin Zeitung, 1855, p. 268, and the 

 species figured by Costa from Naples are the same. Mr. M'Lach- 

 lan, in the Entomological Monthly Magazine for January, 18G8, p. 177, 

 described a third species from a single female, 0. Trimeniana, from 

 Natal. He mentions that he saw a few years since in the Museum 

 in Paris a species from Mexico, but neglected to make a description of 

 it. From a drawing of the fore-wing, received in a letter from him, I 

 am induced to believe that the species now before me from Cuba may 

 be the same, or at least, belongs to the same genus. An accurate 

 examination of the six females from Cuba has convinced me that it 

 cannot be placed under Oligoneuria. The neuration of the wings, 

 and the number of the caudal setse separate them veiy cleai'ly, and I 

 propose for the new genus the name LacJdania. 



Laehlania atanormis Hag. 



Fem. fusca, subtus pallida; capite nigro, prothorace nigro-fusco, 

 lato, margine postico medio emarginato; setis albidis; pedibus nigris; 

 alis griseis, semihyalinis, venis grlseo-fuscis crassioribus; anticis quat- 

 uor longltudinallbus, prima, secunda et quarta forcatis; transversis 

 tribus, Intermediis; alis posticis venis longitudinalibus tribus, media 

 fiircata; transversis nullis. 



Patria Cuba. Dom. Wright. In Mus. Cambridge. Long. corp. 

 6-7 millim. ; exp. alar. ant. 18-20 millim. ; long, setar. 5 millim. 



Head black, broader than long; 

 eyes large, globular, separated; 

 vertex a little longer than bi'oad, 

 oblong, dejiressed; the postei'ior 

 margin rounded and a little emarg- 

 inated in the middle, separated by 

 an imi^ressed transversalline, from 

 which diverges a similar median 

 longitudinal line, ending in an 

 anterior impressed line, surround- 

 ing a circular flat elevation before 

 the ocelli ; the tlu'ee ocelli globular, 

 well marked, the middle one a little 



advanced ; face with a membra- 



, . 1 ,1 , ,. Laehlania abnormis. 



nous, gray, triangular lobe standing 



out in front, truncated before ; antenna with two inflated pale, basal 



