130 MKMOIRS OF THE XATIOXAL ACADEMY OF SCIE^X'ES. 



Arkansas {Palm'); noinial lonii, St. .Martins Falls, .Vlhanj- Itiver, Iliul.son Bay (Dr. Barustoa 

 fide Walker); Brunswk-k, Jle. (Packard); Frauconia, N. H. (Slossoii); Boston, Mass.; Poii-'li- 

 kccpsie, N. Y. (Dyar); Dublin, N. II. (Leonard, Harris coll.); Plattsburj;-, N. Y. (Hudson); 

 Illinois, ilanhattan, Kans. (Popenoe); Colorado, a 9 about halfway between tlie normal form 

 and iticnrcerula (Pack, coll.); Yo Semite, Cal.; i'ortland, Oreg.; Seattle, Wash.; Victoria, British 

 Columbia; Denver, Colo., May li. The Western form incarcerata {onuita), Kansas (Bruner); 

 Colorado (Pack. coll.). California (Morrison), in hue and size exactly like one fiom Truckee 

 Valley (Mr. Glasham); a very small pale 9 from lieno, Nev. (Pack, coll.); a rather larj;e one 

 from Olymijia, Wash. (T. Kiucaid); Seattle, ^Vasll. (Dyar); indenUita, Kittery, Me ; Xew 

 Hampshire; vau, Maine, New York; ornuUt, Califoruia; bijiria, Soda Springs, Colo. (French); 

 var. onuita. Fort Collins, Colo. (Baker). 



Ichthyura iuornata Neiimocgen. 

 (VI. Ill, ligs. 9-11.) 



Ichthi/iiia innrnnta Neura., Papilio, ii, ji. 131, Oct. 7, 18S2. 



Pack,, Kilt. Xcws, iv, ji. 78, JIarcli, lS!t3. 



Ncniii. auil Dyar, Can. Eut., xxv, ji. IL'3, May, 1893. 

 Melalopha inonuila Neiiiii. uiul D"ar, Trans. Amei'. Kiit, Soc, xxi, p. 192, 1891; .Tourn. N. Y, Ent. Soc, ii, ]>. 1 1."),^ 



1804. 



Apparently, although at first sight this is a distinct species, it may prove to intergradc with 

 apical is {imarveruta). Its characters are brought out in the following notes published in 

 Entomological News, 189.'}. Until we know its larval history it may be better to regard it as a. 

 distinct species. 



I am strongly incliued to regard this form as a climatic variety of I. ran var. oniata. One 

 medium-sized oniuUt from southern California iiitergrades with I. inornafa, though it is much 

 smaller. It has the large diffuse discal spot and pale leaden intcrvennlar patches of iiioriiafa. 



Of /. inoniuta Neuni., a ifialc and female from Arizona are in the Edwards collection. It is 

 the largest and palest of all our forms. It scarcely differs from T. oniata in the situation of tiie 

 lines and their relative distribution; the obliipie costal white line and its continuation across the 

 wing are the same, and the obtuse almost rounded apex of the V does not (piite reach the edge, 

 just as it does not in ornata, but the loop made by the obtuse apex is more marked in inoniata. 

 The short middle line, ending on the hind edge of the wing, and the dislocated basal line are 

 exactly as in oniata. 



I. inoniata, then, appears to be only a very large and unusually pale subocherous form of 

 a2)icalis, following the same law of climatic variation, i. e., increase in size and a pale, faded 

 api)earance in Pacific Coast examples (south of Oregon), due probably to a hot, dry, desert region, 

 with a lightcoloi'ed surface soil. By adaptation to these conditions the moths are better jirotected 

 from observation, and thus the life of the species is assured. 



Geoijraphical distrihution. — So far as known confined to southeastern Arizona. 'Sir. Neumoegen 

 does not state the exact locality in "southeastern Arizona" whence this fcu-m was brought, but it 

 would seem to be a member of the Mexican (Sonoran) subproviuce. Thus far uo spei'ies of 

 Ichthyura is cited from Mexico by Mr. Druce in the Biologia Centrali-Americana. 



Ichthyura strigosa (Jiote. 

 (PI. Ill, figs. 12-14), 



Ichllii/uni 8lri(ji>HaGn)to, linll. U. S, Geol. Oeojjr. Survey Terr., vi, j>. ."vS2, Aug. 30, 1882; Check I.ist N., 

 Aiiicr. .Moths, ]), 18, 1SS2. 

 Pack,, Filth ]{cp. IT, «. Knt. Com. I'oicst Trees, p. 453, 1890. 

 Smith, Ust Lcp. IJor. Aiiier., )i. 29, 1S91. 

 Kirhy, .Syn. Cat, Lcp. Hct., i, p. (ilO, 1S92. 

 var. tiictilriila E(Uv. Eiit. .\iiicr., ii, 10, April. 1886. 

 Pack., Ent. News, p. 78, March, 1S93. 

 Melalopha strigosa Neiiiii. and Dyar, Trans. Amcr. Kiit. Soc, p. 191, 1894; .Tourn. N. Y. Ent. Soi'., ii, p. 115,. 

 1894. 



'All the species found by Mr. Palm in Arkansas were collected in the southwestera counties of that .State.. 



