March, 1917] FoRBES : HydRIOMENIN^ OF THE UnITED StATES. 65 



7. Olivaceous brown and white, male antennas pris- 

 matic, §18. 



alchemillata, affinitata, minorata, etc. (Europe). 



7. Normally black, blue-gray and white, wings fragile, 



the outer margin nearly even. 



8. Eye smallish, M, of fore wing arising well 



below middle of cell, mdcv. long and bent 



in both wings, §19 gratulata. 



8. Eye full normal size, M^ on fore wing from 

 above middle of cell. Idcv perceptibly bent, 



§20 (Mesoleuca) ruficiliata. 



and its old-world representative. 



albicilliata. 



7. Small light species with very long palpi, very long 



radial branches and usually with a dark median 



band and a triangular patch below the apex, §21 



(Psaliodes Guen.). 



interrupta Grossbeck and many neotropicals. 

 7. Normally dull fuscous, the hind wing slightly bent 

 at M3, wings heavier, § 22 (Anticlea) . 



badiata (Europe), etc., vasaliata. 

 7. Fore wing with fine wave-markings and often 

 yellow scaling, hind wing very often yellow, 

 ^ §23 {Spargania Guen.). 



aurata and magnoliata; flavolimbaria of S. 



America, etc. (pernotata, teeniata, parino- 



tata, alaskas, occidens, oxygramma, costigut- 



tata, custodiata, carnata, polygrammata and 



lapidata of Europe, the type of Coenocalpe 



Hubn., approach this group more or less 



closely). 



I. Mdcv. of hind wing short and straight, Idcv. often long and oblique; all the 



species examined with eversible glands on the male abdomen (core- 



mata), which are rudimentary in silaceata; generally with wings 



normal in form, with inner margin but little longer than outer, well 



marked anal angle and even or slightly wavy outer margins, normally 



with a dark medial area of moderate width (Xanthorhoe in the broad 



sense) Series II. 



2. One accessory cell which is usually more or less abnormal in form. 



3. Male antennae plumose, vestiture largely hairy, accessory cell small, 



normal (Loxofidonia) 1 acidaliata. 



3. Male antennae pectinate, fore wing with a lobe near base of inner 

 margin, hind wing exceptionally short, §24. .triangularia (exotic). 

 3. Male antennae nearly simple. 



3 This may be a synonym of one of Meyerick's New Zealand genera un- 

 known to me ; as described some must come very close. 



