66 CLARK — NEW SPHINGIDAE 
Hind wing beneath: Yellow basal area extending from R3 to anal 
angle; save for this, the wing is brown with a bluish tinge, and black 
toward anal angle. Discal lines obscure. 
In a species showing so much subspecific variation it is not 
surprising to find a southern form. 
Nyceryx mulleri sp. nov. 
Plate VIII, figure 2. 
Al. ant. long., 7, 23mm. AL. ant. lat., 7, 10mm. Marg. ext., o, 
12 mm. 
Habitat. — Orizaba, Mexico. One male in coll. B. Preston Clark. 
Antennae yellow, brown at tip. Head and thorax light brown with 
darker shading. Crest prominent, dark brown. Abdomen dark brown 
above. Upper hairs of lateral tufts at base bluish white. Lateral trans- 
verse bands anterior to base of tergites 2 to 7, bluish white. Very narrow 
median yellow bands at base of posterior tergites. Abdomen beneath, red 
irrorated with yellow, darker at base of sternites. Hairs at tip of 8th 
abdominal sternite beneath, white. 
Fore wing above: Light brown with darker shading. Facies very like 
that of N. clarki Fassl, but a smaller insect. No silvery gray markings. 
A broad black patch on hinder margin, extending, from a point 4 mm. 
from the base, for a distance of 5 mm. on the margin, extending to cell, and 
then continued to costal margin by a narrow band. This patch is slightly 
incurved anteriorly, and concave distally. Basad of this patch are two 
dark brown marks on costal margin, the basal one extending to Inner mar- 
gin, the outer truncate on M2. Distally of this patch a light area extends 
to a point slightly within hinder angle on inner margin, and narrows to a 
blunt point on costal margin. It contains three wavy transverse lines, 
which continue obscurely through the darker apical area to costal margin. 
Dark apical dot, SC4 to SC5. Anterior to this dot is a dark brown triangle, 
with base on costal margin, 5 mm. in width, and with its apex on R3. 
Distal margin similar in outline to N. eximia, except that angle at R3 and 
hinder angle are slightly more produced. Cilia dark. 
Hind wing above: Dark brown with chrome yellow basal area. This 
area is sharply truncate before reaching anal margin, and extends to inner 
margin; it is more extended and more sharply marked than in N. eximia. 
