420 . EEVISION OF FAMILY SATURNIID^. 



outwardly limited by a series of ochreous spots beyond which is a 

 margin of luteous gray, and superiorly invaded by a large pale lilac 

 patch which is outwardly bounded by an angulated white line. Be- 

 tween veins 6 and 7 near the margin is a large, somewhat irregular 

 black spot, sometimes divided into three. The line separating the gray- 

 ish margin from the series of ochreous spots sometimes becomes darker, 

 or more rarely black. Occasionally the vitreous spot does not indent 

 the transverse posterior line, and in fact all the features of maculatiou 

 are inconstant. Secondaries with the basal band contiuued along the 

 costal margin so as to connect with the outer band which is similar to 

 and a continuation of the t. p. band on the i)rimaries. The vitreous 

 patch is similar in shape and occupies relatively a similar position. 

 The space beyond the band is similar in color and macuhition to the 

 primaries, but the ochreous spots within the gray margin have each an 

 ovate or elongate deep brown center. Beneath, the maculatiou of the 

 upper side is reproduced except that the basal band is wanting and the 

 color is much lighter — washed out. 



Expands 4-6 inches. Bah. Mexico, Texas (I). 



It is decidedly questionable whether this insect really occurs within 

 our territory ; but it is common on the other side of the border, and 

 Mr. Grote has given it a i^lace in his latest catalogue. The sexes differ 

 decidedly in wing form. In the $ the apex of primaries is distinctly 

 produced, the outer margin strongly excavated beneath. The second- 

 aries are much j)rolonged and the outer margin is somewhat incurved, 

 while in the $ the margin is rounded and the wing much shorter and 

 j)roportionately broader. The primaries of the 9 are hardly excavate 

 beneath the apex. The S of this species makes the nearest approach 

 of any of our North American species to the Chinese atlas, in wing- 

 form. The variations in color and in maculatiou are great, and though 

 I have had over a dozen specimens under examination, hardly two have 

 been alike. The characteristic feature is the vitreous spot which is 

 constant so far as I have observed. It is more than likely that some of 

 the species in the catalogue of the B. M. will prove synonymous with 

 this species, but the material in my hands will not permit a decision at 

 present. In venation this species is distinctive — it has but 9 veins to the 

 primaries, and veins 8 and 9 are connected near the apex by a small 

 cross vein. The venation is alike in all specimens examined by me. 

 Otherwise the venation is as in cinctus. The $ genitalia are figured at 

 pi. xiv, fig. 1, and the figures will explain themselves. The supra-anal 

 plate differs from that of the other North American species (excejit 

 calleto) in that the forks are scarcely divaricate and hardly even sepa- 

 rated at the tip. The side pieces are well enough figured to show the 

 method of their fixture to the segments. The larva of this species is 

 not known to me and no description (if such indeed exists) is accessible 

 to me. Seiior Aguillero, of the Mexican Geographical Survey, informs 



