LEPIDOPTERA 589 



LL. JVIoths of various sizes, but with robust bodies, 



and with the apex of the fore wings not sickle-shaped; 



hind wings with humeral veins, p. 728.Lasiocampid^ 



KK. Vein Cu of both fore and hind wings apparently 



three-branched. 



L. Robust moths of medium or la:rge size, with strong 



wings, p. 714 Saturnioidea 



LL. Small moths with slender bodies and weak wings 



{Dyspteris). p. 667 Geometrid^ 



CC. Antennas thread-like with a knob at the extremity; hind wings without 

 a frenulum; ocelli wanting. 



D. Radius of the fore wings five-branched, and with all the branches 

 arising from the discal cell; club of antennee usually terminated by a re- 

 curved hook. The skippers, p. 732 Hesperioidea 



DD. With some of the branches of radius of the fore wings coalesced be- 

 yond the apex of the discal cell; club of antennae not terminated by a re- 

 curved hook. The Butterflies, p. 739 Papilionoidea 



TABLE B 



THE FAMILIES OF THE MICROFRENAT^ 



Contributed by Dr. William T. M. Forbes 



A. Basal segment of the antennae enlarged and concave beneath, forming an 

 eye-cap. 



B. Fore wings with radius, media, and cubitus unbranched. p. 61 7.0postegid/E 

 BB. Fore wings with more complex venation. 



C. Discal cell of fore wings very short and trapezoidal, or absent, p. 600. 



Nepticulid^. 



CC. Discal cell more than half as long as the wing. 



D. Discal cell oblique, its lower outer corner nearly touching the inner 



margin. (A few species only.) p. 628 Blastobasid^ 



DD. Discal cell central in the wing. 



E. Labial palpi minute and drooping, or absent. p. 616.. .Lyonetiid^ 

 EE. Labial palpi moderate, upcurved. (Phyllocnistis in part, and one or 



two Florida genera.) p. 617 Gracilariid^ 



AA. Basal segment of antennae not forming an eye-cap. 



B. Palpus with the first segment relatively very large, normally upcurved to 

 the middle of the front ; when the palpus is short the first segment is longer 



than the second, p. 611 Acrolophid^ 



BB. First segment of palpus small. 



C. Labial palpi bristled on the outer side of the second segment. 



D. Aculeae present over the general surface of the wings; female with 

 piercing ovipositor; antennas typically smooth and velvety-looking, 

 with fine bristles, or narrow, closely appressed scales, sometimes very 



long. p. 598 Incurvariid^ 



DD. Aculese absent, or present only in a small area at the base of the 

 discal cell; ovipositor membranous, retractile; antennae typically rough, 

 with an outer whorl of erect scales on each segment, rarely as in D. 



p. 61 1 Tineid^ 



CC. Labial palpi scaled or loose-hairy only. 



D. Maxillary palpi well developed and of the folded type. 



E. Fore wings with all veins present and with vein R5 running to the 

 outer margin; hind wings narrow; vertex with a small, loose tuft only 



(Acrolepia). p. 632 Plutellid^ 



EE. Fore wings with vein R5 extending to the costa or absent. 



F. Head smooth; hind wings narrow-lanceolate; fore wings down- 

 curved at apex. p. 617 Oinophihd^ 



FF. Vertex rough or rarely smooth in forms with ample hind wings; 

 fore wings flat. 



G. Aculeae present, etc., as in D under C above, p. 598 



Incurvariid^ 



