430 REVISION OF FAMILY SATURNIID^. 



Further details are best shown by a reference to the figure. The S 

 genitalia will be described in the reference to the species. 

 The onlj" iStorth American representative is — 



T. polyphemus Cram., Pap. Ex., i, 8, pi. 5, f. A, B (FhaJwna) ; Grael. ed. Linn., S. N., 

 p. 2402 (Atfacus) ; Fabr., Sp. Ins., ii, 168, 5 (Bombyx); Mant., Ins., ii, 108, 6 ; Ent. 

 Syst., iii, 1, 410, 8 {Bombyx) ; Oliv., Enc. M6th., v, 25, 7, pi. 69, f. 4 {Bombyx) ; 

 Hb., Saml., ii, pi. 385, 386 {Telea polypheme) ; Verz., 1.54, 1610,1816 (Telea); 

 Wlk., C. B. M., V, 1226, 1855 (Telea) ; A. & S. Ins. Ga.,93, t. 47, 1794 {Phalcena) ; 

 Harris, Cat. Ins. Mass., 1835, 72 (Attacus); Rept. Ins. Mass., 1841, 279 (At- 

 tacus); Inj.Ins., Flint ed., 383, 384, f. 181 (Attacus); Fitch, 3d Rept., 1856, 

 p. 137 (Hyalopliora) ; Morris, Syn., 1862, 226 (Attacus); Riley, 4tli Rept., 1878, 

 125, f. 50, 51, 52, 53, 54 (Attacus) ; Brodie, Pap., ii, 58 (list of 29 food plants); 

 Pack., Guide, 6th ed., p. 297, pi. 6 and 7, and f. 228,229 (Telea). 

 var. OCULEA Nenm., Pap. iii, 71. 



This species also needs no new description. It has appeared in almost 

 all entomological reports and is known to the veriest tyro. Harris and 

 Packard are accessible to all ; to these works we refer the student. The 

 antenuiB of the ? of this species are like those of Actias. The genitalia 

 of the S are peculiar, and the supra anal plate shows in its modification 

 a strong resemblance to the typical form of the next family — Ceeato- 

 CAMPiDiE. It is narrow, widening to the tip, and there modified into 

 two distinct lobes. The side piece bears athree-pronged corneous clasper, 

 which is figured on i)late xiv, fig. 8. The structure is unique and very 

 characteristic. Considerable has been written about the economic im- 

 portance of this species, and as it is the nearest ally of forms that are 

 made useful for sericulture in Japan and other eastern countries, tliis 

 has more plausibility than what has been published of the other species 

 of this family. 



The species is found throughout the United States east of the Eocky 

 Mountains, and in the southern portions of the country is double- brooded. 



SATURNIA SCHRAXK. 



The genus Saturnia as here limited has but a single American repre- 

 sentative, S. (falhi)ia Clem. In antennal structure it is peculiar by the 

 long branches to the joints, those of the ? being only shorter and slighter 

 than those of the $ , while they are in both rather irregularly crossed 

 and in the $ ciliate. Head much retracted, the palpi and tongue com- 

 pletely aborted, vestiture thin, long, and divergent. The body and ab- 

 domen are covered with similar long fine hair. The supra anal plate of 

 the male has the typical structure of the group, the points diverging 

 widely and terminating acutely. The figures on plate xiii will show the 

 appearance. 



Primaries with 10 veins, 5 and 6 from a stalk out of upper end of discal 

 cell, 8 and 9 on a stalk out of 7, dividing near the apex. The cross-vein, 

 closing discal cell, thin and straight. Secondaries 8-veined, the veins 

 rather straight, but otherwise much as in the other members of the sub- 

 family. 



