326 GROTE AND ROBINSON. 



Family ZYGAENIDAE. 

 Sub-Family Castniinae.* 



ALYPIA, Buhner. 



Three species belonging to this genus have been described fruiii the 

 Eastern portion of" North America. Of these, our common A. octo- 

 maculata "j" from the Atlantic District, and A. langtonii | from Canada, 

 are very nearly related, but apparently to be regarded as distinct spe- 

 cies. Not only does it appear that the differences between the two are 

 constant, but a somewhat parallel relation sustained between two spe- 

 cies herein described from the Pacific Coast, assist our conclusions as 

 to what we niay regard as specific differences so far as the ornamenta- 

 tion of the secondaries are concerned. Canadian specimens of A. 

 langtonii, in the British Museum Collection, have been described as 

 constituting a form of A. octomaculata, by Mr. Walker § ; but, if our 

 present views are correct, this is the result of an error. The third 

 species, of which we have examined the specimens contained in the 

 British Museum Collection, is A. maccullochii, described and figured 

 in the Fauna Amer. Bor. Vol. 2, PI. 4, fig. 5. In the style of orna- 

 mentation, this species is to be readily distinguished from the two pre- 

 ceding, being allied to A. ridingsii |], from Colorado Territory, and to 

 a new Californian species herein described. 



As at present considered, the North' American species of Alypia are 

 as follows : — 



1. Alypia octomaculata, Ili'ihn. (Zi/jaena oetomaruJata, Fahr.) 



2. Alypia langtonii, Couper, (AL octoynaculata 'I, Walk. ). 



3. Alypia dipsaci, ii. sj). (Plate 6, fig. 37, J.) 



9 . — Resembles Alypia octomaculata. Black. Head, black ; la- 

 bial palpi well extended beyond the front, black, roughly scaled; 

 eyes very narrowly margined with pale sulphur yellow scales before 

 the antenntd insertions and more prominently and continuously so be- 

 neath. ]'atagia, pale sulphur yellow, fringed with black hairs. Ab- 

 d(jnien entirely black or blackish. Legs, black ; anterior and middle 



* For the sake of conformity, we have a(ioi)ted the sub-family termination 

 for this Group, instead of retaining the original Caatniarcs, Bdv., under wliich 

 it was primarily indicated. For a very interesting Paper ilhistrating the 

 growth of Castnia, see Dr. K. A, l'hili])pi's "Metamorphose von Castnla," iStetti- 

 uer Ent. Zeit. p. 337, 1803. 



•f Packard, Notes on the Fiimily Zygaenidae. 



X Couper, Can. Nat. j>. 64, 18().5. 



I List Lep. Ins. Bnt. Mus. Pt. 1, i)p. 59— fiO. 



II Grate, Proc. Ent. Soc. Phil. Vol. 3, p. 521, Plato V, 1864. 



