18Gr>.] 82o 



Having determined specimens in collections hitherto as G. leucos- 

 tigma Harris, this name should he changed where I have so used it, 

 to G. rutila Guenee. 



I have elsewhere shown, after examining Dr. Harris' specimens, that 

 Gorttjna ze.se, Harris, is Achatodes sandix Guenee, and Harris' name 

 having priority while the genus is quite distinct from Gortyna, our 

 species should be known as Achatodes zese. Our species of Gortyna 

 I understand at present are as follows I shall take an early opportu- 

 nity, so soon as I have obtained sufficient material, to fully illustrate 

 and fix our American species. 



cataphracta Grote. 



leucostigma Harris ? 

 nov. sp. 

 rutila Guenee. 

 marginidens Guenee. 



var ? rutila. 



limpida Guenee. 

 cerussata Grote. 

 nebris Guenee. 

 nitela Guenee. 



( hving to the want of fixity in many Noctuid genera, care should be 

 taken by naturalists to avoid the repetition of specific names in the 

 group. 



RIPOGENTJS nov. gen. 



Head somewhat sunken ; thorax moderately elevated; antennae shortly 

 bi-pectinate to two-thirds of their length, moderate, rather short; tegulae 

 short and square behind. Palpi free, projecting before the front, third 

 article obtuse. Abdomen conical, obtuse, exceeding posterior wings 

 somewhat, two anal lateral hair-tufts. 



Wings narrow ; costal margin of anterior wings straight, internal 

 margin short, undulate ; external margin very oblique, forming a slight 

 tooth at near the apex, below which at extremity of first and second 

 median nervules it forms a second strong outward tooth, the point of 

 which lies in an obliquely straight line from apex, and below which the 

 margin is conversely very obliquely excavated to internal angle. Hind 

 wings moderate, slightly dentate along external margin which is deeply 

 excavate at anal angle. 



Legs short, armed, well clothed with strong pubescence. The sexes 

 difficult to distinguish. 



I have not examined the nervulation of this Noctuid genus allied to 

 Eutelia Hubner, and belonging to M. Guenee's family Eurhipidse. 

 The nervules of posterior wings seem very long, discal cell retreating. 

 I hope to be able to obtain further material for dissection ; the squam- 

 mation being close obscures the veins too much to make any pterogostic 

 diagnosis from specimens I am not permitted to retain. 



