w 



A REVTi^IOX OF THK Dl'.I/miD MOTHS SMITH. 55 



Two species ha\"e been described iu tliis genus, referred in my cata- 

 logue to Herminid. In substituting Mr. Grote's genus for these species 

 and omitting 1I< rmin'ui altogether tVom tlie bst of our genera, 1 have 

 been decided by the hick of European material and the present dilli- 

 culty in getting at the tyi)e of the genus out of the mass of European 

 works that are not conveniently accessible to iiu' here. 



Lederer defines IIcniiiniK as being like ZiDichxinotlKi, but witli the 

 palpi different, and he makes three sections: the first witli pectinated 

 male antennas furnished witli a knotted thickening in the center and 

 the fore legs with brushes of hair, including //. crhialin, JI, (jnjphalis, 

 and H. crihraHs; the second with antennae as before, but the fore legs 

 without pencils of hair, including II. fenfacularis; the third with the 

 male antenna' having lateral bristles only, without thickening at the 

 nnddle, and uo statement concerning the fore legs, JI. (Icriralis being 

 the sole species. 



Guenee makes his genus Ilermlnia comprise si)ecies of Zdnclofinatha 

 as well as C. morbhhdis of the i)reseiit series and the Hcrmiu'in of Led- 

 erer, refusing to consider any of the genera sei)arated as valid. Mr. 

 Grote in 1873 analyzed the European species and genera' and con- 

 cluded that II. fenfacularis should be considered as type, and if this is 

 to be followed we have uo species referable to ITcrminuij because none 

 of our forms have pectinated antenna' thickened near the middle, with- 

 out modified fore tibnie in the male, combined with the peculiar palpal 

 structure. In view of my inability to study the Euroi)eau forms at 

 present, I have accepted Mr. Grote's conclusions, and hence his genus, 

 Chyio^itd. 



The two si)ecies referred here ditfer mainly in size, C. pcircaliH being 

 the smaller. In the very large series before me I am nnable to find a 

 single constant difference in maculation, and the color of C.petreaUs 

 can only be said to be darker iu a general way. The difference in the 

 l)al])i pointed out by Mr. Grote is also inconstant, though in C. petre- 

 alis more specimens have them straiglit than is the case in 0. mor- 

 bidalis, and the latter may be said to Lave a tendency to have them 

 curved upward. The difference in size, on the other hand, seems to 

 be constant, and it is accompanied in C. pctrealis by a more than pro- 

 l>ortionate difference in the antenna-, where the lateral bristles are 

 much Aveaker, and in the fore legs, where the member is much smaller 

 than in ('. nwrJndalis. 



There is a hardly marked difference in the male genitalia, which will 

 be described under the specific headings. 



ANALYSIS OK THK SPECIKS OF CHVTOLITA. 



Size laifjer, average 32 mm. ; color paler; fore leg of male proportiouatoly 



large .■moriudai.is. 



Size smalhT, average '21 mm ; color darker; fore leg of mah^ half the si/c 



of C. morhidalis PETKEALIS. 



I Bull. I5ulV. Soc. Nat. S<i., I. 39, 1873. 



