I 862 REPORT OF THE CHIEF OF ENGINEERS. 



Genus LEUCANIA O. 

 Leucanki Ligata. • 



Heliophila Ligata, Grote, List Xoctuida?. p. 12 (1875). 



A number observed and several taken at Pagosa Springs July 31 ; they are a little 

 larger than the examples from Texas. 



Genus HELIOTHIS Tr. 

 Heliotlm Meadi. 



Tamila Meadi, Grote, Bulletin Buffalo Society of Natural Sciences, i, p. 121, t. 3, f. 5 (1874).. 



One example of this lovely insect taken at Pagosa Springs July 31. 



Helioilxis Sulmala, n. sp. 



Male expands 1£ inches. Head and body silvery milk-white; wings same white as 

 body; primaries with a sub-basal band strongly bent outward at its middle, a broad 

 marginal band at exterior margin being widest at inner half toward interior margin, 

 this marginal band is divided through its middle from costa to inner margin by a 

 white line ; a large kidney-shaped discal spot : this spot as well as all the bands are 

 of an olivaceous or yellowish brown, not very dark and semi-metallic, much the tint of 

 the geometrid Gorytodes Trilinearia; the whole arrangement of the bands is much as 

 in HeMothis Bivulosa Guen. and H. Regia Streck., excepting that the portion of the 

 wing interior to the sub-basal band has the white ground of rest of wing; fringes 

 pure white ; secondaries same white as primaries, with a narrow border to exterior 

 margin and a large lunate discal spot of same color as bauds and spot of primaries ; 

 fringe pure white. Under surface same white as above; primaries with marginal 

 band much as above, excepting that it becomes obsolete toward the inner angle; a 

 broad band extends from base along costa to the exterior margin; this band in a 

 measure absorbs the discal spot; secondaries immaculate, except the large discal 

 spot ; all fringes white. 



One male of this elegant insect taken July 31 at Pagosa Springs; a few more ob- 

 served but not captured. 



Family PHALJENIDJ2. 



Genus APLODES Guen. 

 Ajrtodes Undinaria, n. sp. 



Expands If inches. Head white above, brown between the eyes ; palpi white ; 

 antennae white ; thorax bright green ; tibiae and tarsi white ; femora bright green ; 

 abdomen white above and at sides, with a pale green dorsal shade, beneath green. 



Wings, upper surface primaries uniform green, like thorax, minutely reticulated 

 with white, the latter only plainly discernible under a lens; two distinct white lines, 

 the first and narrowest extending from interior margin, not very far from the base, 

 across the wing to middle of costa, this line is a little curved or rounded outwardly;, 

 the second line is' wider and extends from interior margin at two-thirds its distance 

 from base, to the costa some little distance from apex ; costa very narrowly edged with 

 white ; fringe green, edged outwardly with white. 



Secondaries broadly green at inner half of exterior margin, from whence they be- 

 come paler, and white toward apex, costa. and base ; a white line, a continuation of 

 the outer one of primaries, crosses the wing from abdominal margin to costa near or 

 at apex, where it becomes lost ; fringes green, edged with white outwardly, as on pri- 

 maries. 



Under surface all wings pale green, merging into white toward inner half; lines of 

 upper side not so conspicuous. 



One example, July 13, at the Rio Navajo. 



Genus ACID ALIA Tr. 

 Acida Ha Pera Iba ta . 



Acidalia Peralbata, Packard, Fifth Report Peabody Academy of Sciences, p. 70 (1873) : TT. 

 S. Geo. Survey of Territories, Hayclen. x, p. 332, t. 10. f. 48 (1876). 



A number of examples taken at West Fork of San Juan River. 



Genus FIDONIA Tr. 

 Fidonia Addaliata. 



Fidonia Addaliata, Packard, Sixth Report Peabody Acad, of Sciences, p. 48 (1874). 

 Loxofidoitia Addaliata. U. S. Geological Survey of the Territories, Harden, x, p. 224, t. 9, f. 

 44 '(1876). 



Two examples, Pagosa Springs. This species bears a strong resemblance to Zoito- 

 soiitu Trilinec.via Rkh,, a Eur species. 



