LEPIDOPTERA HETEROCERA. 1041 



small. Legs smooth. Wings minutely black-speckled, with a straight 

 ferruginous line, which is bordered with cinereous on the outer side 

 and extends from much beyond tbe middle of tbe interior border of 

 the hind wings towards the tips of the fore wings, near which it is 

 acutely retracted to the costa ; a submarginal undulating line of 

 whitish black-marked points ; underside transversely brown-speckled, 

 with a brown denticulaied posimedial line ; renitorm mark distin- 

 guished by a black white-bordered dot. Fore wings subfalcate, 

 acute, with a black basal point and a zigzag blackish line near the 

 base; an oblique blackish streak between the costa and thereniform 

 mark, which is blackish-bordered and is slightly excavated on the 

 outer side ; orbicular forming a black whitish-bordered point ; costa 

 dark ochraceous, with four pale ochraceous points near the tip. 

 Hind wings with a black dot representing the reniform mark. 

 Length of the body 6 lines ; ot the wings 16 lines. 



a. St. Domingo. From Mr. Tweedie's collection. 



Thermesia alacris. 



Mas. Cinereo-ftisca ; caput et thorax anticus obscure fusca ; 

 palpi suberecti, capitis latitudine valde longiores, articulo 3o 

 lineari subfascicutato apice cinereo; altt nigro subconspersce, 

 purpurascente aneo sujfusa, linea nigra recta obliqua cinereo 

 marginata apud costam retracta et difatata, striga postica dif- 

 fusa nigra^ linea submarginali undulata e punctis nigris ; 

 antics subfalcatce, linea basali angulosa strigaque antica 

 obliqua nigris diffusis, reniformi nigro marginata strigam 

 nigram incladente, orbiculari e puncto nigro albo mar- 

 ginata. 



Male. Cinereous-brown, more cinereous beneath. Head and 

 fore border of the thorax dark brown. Palpi nearly erect, pubescent, 

 very much longer than the breadth of the head and rising very high 

 above the vertex; third joint linear, much shorter than the second, 

 slightly tufted above near the tip, which is cinereous. Antennae 

 slender, setose. Abdomen extending a little beyond the hind wings ; 

 apical tuft very small, slightly compressed. Wings slightly tinged 

 with purplish aeneous, very thinly and minutely black-speckled ; a 

 straight black line, which is bordered wiih cinereous on the outer 

 side and extends tapering from two-thirds of the length of the inte- 

 rior border of the hind wings towards the tips of tbe fore wings, on 

 approaching which it is acutely retracted to the costa, where it is 



