547 



falcate; while the antenna' are nearly always pectinated. It is possible that 

 the species may intergrade with those of Eugonia. The distinctions are 

 certainly somewhat artificial. The genus is principally restricted to the 

 Pacific coast, the less typical forms (lornta and crocallata) being restricted to 

 the Atlantic coast. These two species are in many respects closely allied to 

 T. trianguliferaria of the Pacific coast, so much so as not to warrant their 

 generic separation. 



Synopsis of the Species. 



A. Male antennae simple ; wings slightly angular : 



Cream-white, with a single oclireous oblique line on the fore wings T. lorata. 



Yellow, with a single brown oblique line on the fore wings T. crocallata. 



B. Male antenna 3 pectinated ; wings of male rounded, in female 



very angular : 



Deep yellow, with three very large, brown, costal spots; antenna' narrowly 



pectinated T. trianguliferaria. 



Whitish-yellow; fore wings with two broad dark lines; antenna; plumose /'. coloradarUx. 



C. Palpi long; the species of various shades of brown : 



Fawn-brown ; fore wings with two pale subparallel lines T. paralleliaria. 



Dull orange; fore wings with the inner lines curved outward ; the outer more 



or less sinuous T. aurantiacaria. 



Fawn-brown ; larger than any of the preceding species ; wings broad and well 



angulated T. cervindria. 



Pale oclireous ; wings very falcate, with a slight angle between the apex and 

 the middle angle; a single, broad, outer, sinuous line, curved outward 

 before reaching the costa T. grotearia. 



The largest of all the species, the wings very falcate and angular, pale ochre- 

 ous, the anterior pair with three blackish subparallel broad lines ; male 

 antennae simple T. trnxaliata. 



Wings much less falcate and angular than in the other species of section C ; 

 fore wings with two black scalloped lines ; hind wings with a single 

 scalloped line ; male antenna? simple T. agrotata. 



Tetracis lorata Grote. Plate 12, fig. 41. 



Tetrads lorata Grote!!!, Can. Ent. 



4 <* and 2 9. — Body and wings uniformly cream-white. Palpi and 

 under side of the antenna? oclireous. Wings unspotted, with a single, dull, 

 ochreous, oblique, straight line extending from just beyond the middle of the 

 inner edge to the costa, ending just before the apex ; hind wings with no line, 

 immaculate. No discal dots on either wings. Beneath immaculate, the band 

 not re-appearing on the fore wing. 



Length of body, $, 0.60, 9, 0.60; of fore wing, <?, 0.85, 9, ?; expanse 

 of wings, 1.75 inches. 



