20 



the surface of the front. The occipital region is considerably shorter than 

 the clypeal; the occipui being shorl in the middle, and dilated on the side. 

 The epicranium is rather small, subtriangular ; the hind edge being moder- 

 ately rounded and encroaching on the occiput. Ciypeus squarish ; consider- 

 ably longer than broad, the sides narrowing considerably in front, ami with 

 no orbital region; surface moderately convex. Mandibles long, slender; 

 labrum minute; tongue well developed Two ocelli present. 



Eucrostis chlo?'oleucaria, 3 (pi. (I. fig. 22). — Head remarkably broad on the 

 vertex; occiput remarkably short, dilating on the sides. Epicranium very 

 large, transversely diamond-shaped, extending much farther back than usual, 

 with two tubercles in the middle. The clypeal region Hal and very broad at 

 base, narrowing rapidly in front, more so than in any genus of the family 

 thus far examined. The ocelli are very small, partially obsolete. 



Tephrosia canadaria. — This genus is allied to Acidalia and Petrojrftora in 

 the form of the head, the ciypeus being long and narrow. Occipital region 

 long; eyes full and globular; epicranium small and subtriangular. 



Cymatophora crepuscularia (pi. G, fig. 23). — Head short and broad. Oc- 

 ciput moderately long, excavated by the epicranium, which is narrow, small, 

 rounded, and very convex. Ciypeus nearly square, only slightly longer than 

 broad, the sides slightly converging anteriorly. 



Ennomos magnaria. — The head resembles Eurymene in its general 

 shape, size of the ryc^, breadth, and form of the clypeal region (i. e., region 

 between Ihc eyes). The occiput is larger than usual, being very long, and 

 not much wider at the end than in the middle, since the epicranium is small 

 and does not encroach as usual on it. Epicranium small, globose; very 

 convex behind each side; not reaching so near the orbits as usual; the 

 intcrantennal space being rather wider than usual. Ciypeus large and broad; 

 not so free from the orbits as usual ; very wide; not much longer than wide; 

 front edge rounded. Labrum small ; broadly triangular. Mandibles small ; 

 almost obsolete. Maxilla' small, weak ; one-third «s long as in Calx-units, 

 Y>\ the cephalic characters, this is a lower genus, evidently, than most of the 

 Ennomince, and should follow on alter Eurymene. 



Angerona crocataria. — Occipital region full, and very convex: wider 

 than in Caberodes, the eyes being Hatter and smaller. Occiput very short, 

 especially in the middle, where it is \r\-y narrow, forming a slight ridge, but 

 expands triangularly between the epicranium and orbits; the epicranium 



