March, 1907.] DyAR : AMERICAN LePIDOPTERA 51 



discal venules, one below cell, one in cell and one above, the two near the cell edged 

 with black within. 



f . Without the stigma, but otherwise as in the male. Below the ground color 

 of the hind wings is greenish yellow, the anal area fulvous, the spots small, white, '_ 

 edged with black on both sides, although small, very distinct, yet cut short at the 

 costal area. 



One c?, two ?9, Monterey Co., California, through Mr. George 

 Franck. 



Type. — Cat. no. 10252, U. S. Nat. Mus. 



The species looks like a form of Erynnis comma Linn., and may 

 possibly have been described under that species ; but the black area 

 below the stigma of the male is distinct. 



Family SATURNIID^. 



Hylesia coadjutor, new species. 



Nearly allied to H. lincata Druce. It is larger, paler and more uniformly 

 colored, the outer margins of the wings entire, the hind wings especially being with- 

 out any angle on the margin. Markings as in Hneata but less contrasted, the lines of 

 the fore wings olivaceous brown, their bordering shades pale but not contrasted ; dis- 

 cal cloud obscure. Hind wings with the discal ring more elongate than in linea/a, 

 the two outer dark lines obscure, well separated. Beneath on the hind wings the 

 apical streak defining a light shade is absent. 



One male, Orizaba, Mexico, October (R. Mueller). 

 Type. — Cat. no. 10193, U. S. Nat. Mus. 



Family SYNTOMID^. 



Mystrocneme dulcicordis, new species. 



Head black with a diffuse patch of bluish white hairs on the vertex. Thorax 

 black, a large red spot on the disk behind, followed by a narrow white line. Abdo- 

 men crimson with the basal segment black. Fore wings smoky black, nearly opaque 

 outwardly, subhyaline on the cell and below ; hind wings subhyaline throughout, the 

 veins black, the apices narrowly infuscated. Legs black. Expanse, 28 mm. 



Two males, Mexico City, Mexico, October 1906; Orizaba, 

 Mexico, September 1906 (R. Mueller, no. 454). 



Type. — Cat. no. 10150, U. S. Nat. Mus. 



Family LITHOSIID.E. 



Hypoprepia muelleri, new species. 



Head and thorax dark gray ; abdomen gray, anal tuft red above, a few pink hairs 

 at base of abdomen. Fore wings uniformily dark gray with a small pinkish red patch 

 at the extreme base. Hind wings thin, semitranslucent, pale pink, with abroad gray 

 border. Beneath as above, but paler. Legs entirely gray. Expanse, 25-27 mm. 



Two males. Mexico City, Mexico, May 1906 (R. Mueller, 

 no. 19.) 



Type. — Cat. no. 10149, U. S. Nat. Mus. 



