j\lr. J. 0. Westwood on new species of Saturnia. 295 



The hind wings have a similar-sized vitreous patch in the middle, 

 its basal edge being nearly straight, preceded by an arched white line, 

 ontwarillv edged with black and comiected towards the costa with the 

 stronglv-waved white line (inwardly edged mth black) on which the 

 apex ot" the vitreous patch rests ; the ashy huff margin of the wing 

 bears a series of small black spots, followed by a very slender waved 

 black line. 



On the underside the wings have the base of a rich darker brown 

 colour (extending as far as the undulated transverse striga), the api- 

 cal lialf of the wings (as well as the costa of the hiud ones) being 

 much j)aler. 



The aiitennse of the males are not very broadly feathered ; they 

 are 32-jointed, each joint emitting four branches of equal length, ex- 

 cept about eight of the terminal joints, in which one of the pairs of 

 branches gradually dinunishes in length, and becomes obsolete in 

 two or three of the terminal joints. The antennce of the female are 

 less strongly feathered, and one of the pairs of branches becomes ob- 

 solete in about seven of the terminal joints. 



Saturnia Zacateca, \\'estw. .S. ulis valde august is suhfalcatis 

 nigris, omnibus macula maxima vitrea, anticis striga basali geni- 

 culata alba, ad apicemfulvo, castaneo griseoque varieg at is , fascia 

 interrupta alba eatus rufescenti ; posticis nigris, prope marginem 

 posticum fascia interrupta alba extus castanco-rufa, margine pos- 

 tico griseo varieguto. ^ 

 Expans. alar, antic, unc. 3f. 



Hab. in Bogota, Americse ^leridionalis. In Mus. Hope. 

 This curious species is at once distinguished by its very narrow 

 wings and the large size of the glassy spots, especially in the hinder 

 pair ; the body is black, with a white ring round the neck and a less 

 distinct fascia across the huid part of the thorax. The antennae are 

 verv strouglv branched ; the fore wings are especially long and narrow 

 and slightly falcate at the tip, which is rounded ; they are of a black 

 colour, shghtly tinged with chestnut, and powdered, especially along 

 the fore margin, with grey scales. A narrow, straight, white striga 

 extends from the base of the wing to the vitreous spot, where it is an- 

 gulated, and runs towards the fore margin. The centre of the wing is 

 occupied by a large, elongated, suboval heptagonal vitreous spot, which 

 is not traversed by any transverse vein, the branches of the median 

 vein being pushed so far backward, as to admit of its occupying so 

 large a clear space ; a narrow white fascia extends from its extre- 

 mity to the costa, and from the middle of its hinder margin to the 

 hiud margin of the wing, the space between which and the apical mar- 

 gin is varied with cliestn\it, red and grey scales and luteous patches. 

 The tip of the wing is orange, with a chestnut patch and a white 

 augulated hue, below which is a large oval chestnut-red patch, bear- 

 ing a black spot and divided into several parts by dark luteous hues. 

 The liiud wings are almost entirely occupied by a large oval glassy 

 patch destitute of veins, the subcostal vein being pushed towards the 

 costal margin, and the median one towards the anal margin, and their 



