AMERICAN LEriDOPTERA. 327 



tibiae elotliod with orange colored scales; on the anterior tibiae the 

 scales are thicker and more prominent and do not extend over the 

 lower extremity of the joint; on the middle tibiae the orange scales 

 are shorter, forming a lateral tuft and include a black dot near the 

 lower extremity of the joint; the middle femora are faintly shaded 

 with orange inwardly. All the tarsi are marked with whitish, the ba- 

 sal joints most distinctly. Antennae long, gradually thickening to- 

 ward the tips, black, narrowly sub-annulate with white over their 

 slender basal portion. 



^Yings black, with a faint reflection. Primaries with two large sul- 

 phur yellow spots : the first towards the base, smaller, sub-triangulate; 

 the second over the nervules, larger, sub-pyriform, oblique. Second- 

 aries with a reduced, basal, sulphur yellow spot, and an outer, much 

 larger, sub-quadrate patch. Beneath, the markings of the upper sur- 

 face are exactly repeated, while the yellow of the spots is pahsr. The 

 fringes of both wings, on either surface, are entirely black and silky. 



Expnnar^ 2X ni. m. Length ofJxuli/^ 12 m. m. 



IJahitnt. — ( 'alifornia. Lorqitiu. 



Readily distinguishable from A. octomaculata, by its smaller size and 

 the different color and proportion of the spots on the secondaries. 



4. Alypia sacramenti, n. sp. (Plate fi, fig. ."S, 9 •) 



5 . — Size large. Black. Head black ; labial palpi well extended 

 beyond the front, black, inwardly touched with pale sulphur yellow 

 scales. Anteniuie long, black, thickened toward the apices. Eyes nar- 

 rowly n)argined on the front, before the antennal insertion, with ])ale 

 sidphur yellow, and more prominently and continuously so beneath. 

 Legs black, anterior and middle tibiae clothed with orange colored hair. 

 Thorax black; the putagia and sides of the j)rothorax are sulphur 

 yellow, the former fringed with black hairs. Abdomenentirely black. 



Wings ample, black. Primaries with two sube(jual sulphur yellow 

 spots : the first towards the base, irregularly sub-quadrate, its upper 

 margin being angulated; the second over the nervules, sub-ovate, ob- 

 li(|ue. Secondaries with a single reduced sulphur yellow spot shading 

 to whitish, situate beyond the discal cell. Underneath the spots are 

 paler, more irregularly shaped and notably larger; this latter character 

 is especially to be perceived when the single spot of the secondaries is 

 considered; it is here whitish and much larger, being externally pro- 

 duced, than its analogue on the upper surface. 



Uxpanse, ?jij m. m. LevyfJi ofhodij^ 14 m.m. 



Habitat. — California. Loi-qidn. 



