A. E. Grote's Notes on the Zyyfrnidse of Cuba. 175 



Family ZYG^NID^l. 

 Sub-Family Ca8TNIAR.ES, Boisduval. 



SEIROCASTNIA, n. g. 



The antennae are very gradually swelled towards the tips, which are 

 slenderer. Beneath, on their lower surfaces, the antenna] joints are 

 provided with a few minute and isolated setal hairs. The antenna; are 

 thus simple, not serrate, and are much the same in either sex; in the 

 male the lower surface is slightly more rugose. The antenual struc- 

 ture resembles that of Ah/pia. The eyes are prominent and globose. 

 The head i< plainly visible from above, but improminent, impacted on 

 the prothoracic ring, which is straight and square in front; the inser- 

 tion of the primaries being hrought well forward. Clypeus, long, and 

 clothed with loose and long scales, which leave the apex of a very 

 prominent clypeal tubercle naked. Labial palpi, erect, not horizon- 

 tally porrected, curved and pressed against the front, pilose, third joint 

 obtuse and rather short. Thorax, square, flattened above ; tegula) mo- 

 derate, clothed with broad, somewhat scintellate scales. Abdomen, ta- 

 pering slightly, linear, as long as internal margin of the Secondaries. 

 In the male the corporal parts are more pilose, clothed with longer hair 

 than in the female; the anal abdominal valves are pilose and promi- 

 nent. In both sexes the thoracic parts are loosely haired; on the teg- 

 ula: the hairy squammation is underlaid by broader, shining scales. 

 The wings are very ample, rounded at the angles; primaries elongate, 

 since they are a third longer than the entire body. Nervules long and 

 straight or somewhat depressed. First, second and third m. nervules 

 approximate and equidistant at base. The nervules are longer than 

 in Alypia, since the whole wing is proportionally more elongated. The 

 costal nervules are more aggregated. Secondaries, full and rounded ; 

 their neuration resembling that of Alypia. Legs, stout, spinose, gene- 

 rally finely scaled; tibial spurs, especially those on the hind legs, long. 

 Tibia), fringed laterally with longer hairs, especially in the male. Max- 

 illa), moderate. 



This genus cannot be referred to Ephialtias, Hubner, of which E. 

 abrupta ia the type. In the diagnosis I have endeavored to bring out 

 the evident affinities of the moth to Alypia, and its proper location in 

 this sub-family. S. tribuna is called Josia tribuna by Mr. Walker. 

 It is evident that the material cited under Josia. Hiibner, by Mr. 

 Walker, belongs to several distinct genera, for which the names em- 

 ployed to distinguish groups in the British Museum Lists might be 

 used. I cannot, however, use the name "Thyrgis," under which Mr. 



