OF NORTH AMERICA. 163 



C. 7iobililella, Cramer (loc. cit.) Not having Cramer's figure for com- 

 parison, I am compelled to accept the determination of Messrs. G. 

 and R. , while strongly believing that two or more species are mi.xed 

 up under the same specific name. Dnncan (loc. cit.) slates that Cra- 

 mer's figure was drawn from an insect taken on the island of Cura9oa, 

 and figures one taken on the island of St. Domingo. Both his figure 

 and description show the posterior wings to be white ivith a dark mar- 

 gin ; there is no mention of the terminal white line either in text or 

 plate; and setting aside the number of the white spots which are much 

 fewer in the insect described than in Duncan's figure, there still re- 

 mains in addition the much larger size (1.25 inches) of the West 

 Indian specimens to indicate the presence of two species. I have also 

 beiore me a specimen from Costa Rica, which approaches the insect 

 under consideration very closely. It expands 1.30 inches, and while 

 the coloration is identical the white spots are fewer in number, more 

 quadrate in form and the terminal white line is absent. It resembles 

 the insect here described much more closely than do Duncan's descrip- 

 tion and figure, yet it is clearly a distinct form. I greatly regret the 

 want of access to Cramer's work, a careful comparison with which 

 can alone solve these discrepancies, but should this determination 

 prove erroneous, I would suggest the name of C. imiiella for the 

 Texan species. 



2.-CYD0SIA AURIVITTA. (Pl. 7, fig. 9.) 



Cydosia aurivi/ia, G. and R., Trans. Am. Ent. S., vol. 2, p. 186. 

 PI. 3, fig. 68. (186S. ) 



" 5. ?. — Entirely cyaneous black, lustrous, beneath less shining 

 and more of a dead black. The male abdomen has the anal segment 

 ringed with bright fulvous scales. Anterior wings with a golden yel- 

 low stripe on costa at base ; a sub-basal stripe running transversely 

 downward from median nervule to internal margin, sometimes resolved 

 into two spots by its obsolescence on internal nervure. On the disc 

 a subquadrate spot and a gently sinuate even transverse band before 

 the margin. All these markings are very broad, evident and concolor- 

 ous, being of a deep gold color. Elsewhere the insect is entirely 

 immaculate, generally cyaneous, sometimes greenish black." (G. and 

 R. loc. cit.) 



Expanse of Wings, 0.90 inch ; length of body, 0.35 inch. 



Habitat. — Texas (Belfrage). Imago flies in I\Iay and June. 



