1886.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 427 



the margin of the pale space. The secoudaries are as iu gloveri, except 

 that the colors are as iu the correspondiug parts of the primaries. 



Expands 4-4f inches. Hub., California. 



In venation and genital structure this species corresponds closely 

 with gloveri, so that indeed no differences are observable. The anten- 

 nae of the male are unusually large and disproportionate, and the wings 

 are very thinly scaled, an effect heightened by the jjeculiar color of 

 the insect. It seems not uncommon in California, and is further re- 

 moved from cecropia than either of the other species of the same sub- 

 group, though placed nearer to it iu the synopsis. 



A. cecropia Linn., S. N., ed. x, 49i), No. 3 (Bombyx); ed. xii, ii, p. 809, No. 3, 1767 

 {AttacHs); Mus. Lud. Ulr., 368 (Attacus); Giuel. ed. Linn., S. N., 2401, No. 3 

 (Attactts); Fabr., Syst. Ent., 575,3; Sp. Ins., ii,167, 3; Mant. Ins., ii, 108, 4; 

 Ent. Syst.,iii, 1, 408 {Bombyx); Oliv. Euc. M6tli. Ins., v, 2b, 5, pi. 69, f. 3 {Bom- 

 hyx) ; Clerck., Icon. Ins., pi. 49, f. 1 {Bomlyx) ; Cram., Pap. Ex., iv, 66, pi. 42, 

 f. A. B (Phalwna) ; A. & S., Ins. Ga.,pL 45 (Phalcena), Dru., i, pi. 18, f. 2; 

 Westw. ed., i, 32, pi. 18, f. 2 (Saturnia); Catesby, Carol., ii, 86, pi. 86; Hb. 

 Verz. 156, No. 1630, Iciie (Samia) ; Wlk., C. B. M., v. 1224, 1855 (Samia) ; Fitch, 

 3d Eep., 363, 1856 (Attacus) ; Morris, Syu. Lep., 1862, p. 223 (Attacus); Duncan, 

 Nat. Lib., 32, p. 132, pi. 11,1852 (HyaJonhora) ; Harr. , Cat. Ins. Mass., 1835, 

 72 (Attacus) ; Kept. 1841, 279 (Attacus) ; Inj. Ins., Flint ed., 385, ff. 182 to 185 

 Sprague, Can, Ent., ii, 82; Minot, Can. Ent., ii, 100; Saund., Can. Ent. iii, 149, 

 f. 31-33 (life hist.) Hulst., Bklu. Bull., iv, 54 (hybrid of) ; Brodie, f>ap., ii, 32 (list 

 of 49 food plants) ; Riley, 4th Rept., 103, ff, 33-36, 1872 (AKacus) ; Pack. Guide, 

 6th ed.,298, 1878 (Platysamia). 



Few moths have been more often figured and described in one or 

 more stages tbau this species, and I shall not add to the number here, 

 but refer the student to Harris for a very accurate figure. The pri- 

 maries have 10 veins, as shown in the figure, vein 9 having no distinct 

 point of origin. It seems almost to arise from the membrane, and I can- 

 not trace any distinct connection with 8. Genitalia differ in some slight 

 particulars from those of the species heretofore described, but these 

 differences I shall leave to be explained by the figures, and shall not 

 waste words over them. 



SATURNIIN^. 



The Saturniince differ at once from the Attacince and are sharply sepa- 

 rated from them by the closed discal cell on both wings. There is a 

 peculiarity of habitus common to them all, and a distinct tendency to 

 the other Bombycid families. The male antenuiie are always pectinated 

 to the tip as is usual, the joints each with two branches. The 9 9 

 may have the antennae either simple, serrate, singly pectinate, or, as iu 

 the Attacince, similar to those of the 3 , but somewhat slighter; in some 

 genera the upi)er branch of the joint is shorter than the lower, the pec- 

 tinations still extending to the tip. The venation is very similar in the 

 subfamily , ten being usual, and but one or two species having nine veins 



