75 



The rtfth one alluded to has not yet, I believe, been described; it 

 comes nearer to Arizona' than to any of the others, but the bluish gray 

 color of the primaries, head and thorax is heavier, darker and of a 

 more even unicolorous appearance, and the markings are not near as 

 distinct and black as in ArizoncE, having more of a blurred effect, and 

 in some examples are almost obsolete. Secondaries as in JfaAV/Z/and 

 Arizonce, but of a little deeper tint. Hab. — Colorado. 



Of all these five I have examined, and possess large series, and each 

 one holds steadfast to its own type with little or no tendency to merge 

 into either of the others, but that all — Babayaga is the most aberrant — 

 are closely allied, and came from one stem, there can not l^e the least 

 doubt, call them species or varieties or what best suits your notion for 

 the time being. 



NOTES ON MEXICAN LEPIDOPTERA, WITH DE- 

 SCRIPTIONS OF NEW SPECIES. 



Hv Henry Edwards. 



(Third Paper.) 



Euchaetes immanis, n. sp. — Whole upper and lower surface of 

 wings dark fawn-drab, without any markings whatever; the sides and 

 tip of the abdomen are dull orange; the head is cream-white in front, 

 orange beneath the eyes; all else the same color as the wings. 2 S . 



Exp. wings 60 mm. Length of body 20 mm. 



It is possible that this species may form the type of a new genus; 

 the greater size, more produced wings and longer antennae, with very 

 deep pectinations, inclining me to that conclusion. There is, however, 

 no difference in the neuration, and the coloration is like that of some 

 Eiicluetes. 



Halisidota mansueta, n. sp. — Allied to H. Eihcardsii^ and resem- 

 bling it greatly in point of coloration. The primaries, however, want 

 the dark bands of the California species, and the abdomen is without 

 black spots. The ground color of primaries is fawn-color, made up 

 ot minute specks, and traversed by six imperfect, macular bands of 

 pale buff, that behind the cell being the most perfect. These bands are 

 nearly straight, the sub-median being slightly oblique: apices much 

 produced. Secondaries sub-diaphanous, pale buff, stained with rose 

 color, broadly, along abdominal margin. Thorax concolorous with 

 primaries; abdomen very bright rosy red above, buff beneath, and 

 along the sides. Fore tibiae rose color within, rest of legs buff. The 

 markings of the wings faintly repeated beneath. i 9 . 



Exp. wings 58 mm. Length of bod^• 20 mm. 



