MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 171 



Neiice bidentata Wiilkcr. 

 (I'l. VII. Ii-. 15.) 



Nerii'e hUlentnta Walk., Cat. Lep. Br. Miis., v, p. 1076, l.ss,"). 

 Pack., Proc. Eiil. Soc. Pliil., iii. p. 358, )8til. 

 (irote, Check List N. Auier. Jloth.s. p. Ill, 1S82. 



Marlatt, Trans, of 20tli and 21st meetings of Kansas Acart. Sc. fur 1887-88. xi, p. 110, 1889. 

 Pack., Fifth IJep. U. S. Eut. Conim. Ins. luj. Forest anil Shade Trees, p. 267, 1890. 

 Smith, List Lep. Bor. Amer., p. 30, 1891. 

 Kirby, Syu. Cat. Lep. Bor. Amer., i, p. 487, 1892. 



Nenm. and Dyar, Trans. Amer. Ent. Soc xxi, p. 187. .Jnne. 1894; Jonr. N. Y. Kut. 8oc., ii, 

 p. 114, Sept., 1894. 



Larva. 



(PI. XIX, fig. 4, and PI. XXIII. figs. 1. In, 1/,, 1,., 1,/.) 



Mid-Iatl. Traus. 20tli and 21st meetings Kansas Acad. Sc. for 1887-88, xi, p. 110, 1889. (Figs, of egg. larva, 

 impa and motl).) 

 Packard, Proc. Bost. Soc. Nat. Hist., xxiv, p. 525, 1890. 

 Sonic. Psyche, vi. p. 276, .luuc, 1892. (Egg. five larval stages, and pnpa described.) 



Mdlh.— Three S . Head, protliorax, and thoracic tuft sable-biown, tbe re.stof the thorax and 

 the internal border of the fore wiug.s cinereous, edged iu front \vith silvery white; this latter 

 l)ortioii of tlie wing is twice deeply indented by an inner, small, rounded tooth and an outer, large, 

 broadly triangular projection. The dark brown median portion shades into cinereous toward the 

 costo apical portion : two short oblique brown lines inai'gined below with cinereous are situated, 

 each in an intervenulnr space, just above the middle of tlic outer margin. The hind wings, as well as 

 both pairs beneatli, are very light brown. A faint median diffuse darker line crosses both wings. 



Length of body, S , 15 mm.; expanse of wings, S , 40 mm. 



£(1(1. — "0.0 by 0..5.") mm. Shape, hemispherical, with a broad fiatteiied base, irregularly 

 encircled by a whitisli cement fastening to the leaf. Surface shining, apparently smooth, but 

 when highly magnified is found to be covered with raised lines inclosing minute polygonal, usually 

 six-sided, areas. Color, honey- yellow; after hatching, nearly white.'' (Marlatt.) " Very hke the 

 eggot' Xddatu gibbosa.''' (Soule.) (For Larval stages 

 I-IV see Apxiendix A.) ^ ^ ^ ^"S. / 



Xrfrra.— "Length, 1.25 inches. General color, ^J*' ' " - *^-^^'' " "^ ^ /^4 

 polished bluish green. Head narrower above than "'■^'^ ' ij^^£// 



below and larger than segment 1; head of the same '^ ,-tr>. ^ i 



l)olished green hue as the body, with four perpendic- *'^,^'- &■ -^^ ""^ ^ I A 



ular silvery green lines, the two outer ones running ' W^ t i, \j.^~' 



parallel to the triangular piece and then taking its ^ y < ^ ^^j^ 



V-shaped form. A row — four to six — of minute black ■^ '""I" ~ ■*• " e-"^^ 



eye-spots at base of palpi. Three thoracic segments, '^^:^^:it:^^^^^^^ ^•^^^'^')^ 

 above pale silvery green, interrupted, however, by a ^'-'^i— .^ssa 



straight dorsal and wavy subdorsal line of the dark Fio. GS. .Vmce bidentata: a.mMh-. b.Urra-. c, pnpa: d. 



1-1*, 1 , 11 CI i-ii_i-f-i folded leaf inclosiDi; the cocoon, all natural .size: e. the es^ 



■bluish green general color. Segments 4 to 11, inclu- „„i ,., ,i „.:,i, „„,i:„ <-,i,„ ,*■ ,. i -^r 



^ ^ ^ ^ eiiljii'iietL with outline ol the .siirracc i):\lteru rauc-n lu.ignified. 



sive, each with a large anteriorly directed prominence c. l. Maiiatt, iw. 

 ending in a bifid ridge, the incision being trausvc^rse, 



the anterior portion being curved backward and larger than the posterior part, the two looking very 

 much like the bill of an eagle and snscei)tible of being opened and closed. Segments fiom 1 to (J 

 gradually increasing; to about of a size, or showing but a very slight decrease; 10 and 11 

 somewhat smaller and of a size, though the prominence on 11 is more pointed and higher than 

 that on 10. Steei) decline from 11 to anus, with but a very slight prominence on 12. The upper 

 half of the body, including prominences, is silvery-green, with the dark lines already mentioned 

 on thoracic segments, and an oblique dark line running on the other segments from anterior base 

 of prominence to the i)osterior portion of the following segment. Summits of prominences yellowish, 

 with extreme edges brown. Spiracles yellowish with a lilaceous annulation. Thoracic segments 

 with a lilaceous line, bordered above with yellow immediately above the le.gs; segments 4 and 5 with 

 a distinct and the rest of the segments each Avith an indistinct patch of the same two colors in a 

 line with it, frequently becoming confluent and forming another line from 10 to anal legs." (Riley.) 

 This larva, judging by the figure aud descriptiou of Mr. C. L. Marlatt," is an exaggeration of 



'Trans. 20th and 21staunii;il meetings of the Kansas Aoailemy of Science, 1887-88, xi, 1889, 110. 



