INTIlODrCTKiN. 



M'u'ropft'njx they arc non-drnticulato and liuu ti()i»l<s>, and in tht 

 higher forms rudimmlary. In h'rioctjt/iala the fn-e \ni\\n and 

 typical li;,'nhi of tlic nnuKhhulatc insects are present, tlie li^uhi 

 beinj; Cornied hy the fusion of tlie inner palps into a hhort tnbuK- 

 open externally, a short hv])ophar\n.\ luin-; present on its inner 

 wall. 



Fig. 1. — Hoiul «»f H L«>pidoptorous infM»rt fmin idnivr iiiul from the >«i(lc. 

 (Frulu I'mk-'irtl'!* GiiuU«. p. *J.'i'J.) 



a/. Antciiun-. fr. Kpicmnium. 



r. Cl\pvu.H. CH\ Otx-iput. 



c Kvi-. 7n. IMi^iT pnrt of Inbrmii. 



/. ? Lalirum or ppiplinrvux. )/>jr. l'ruU>i»cii«. 



7n.p. Maxillary pnlpi. /.p. labial palpi. 



... Ot'cllu.s. * 



The maxillary palpi, ohsolete in some Kinvios, are from 1- to 

 O-jointed in those that jios.st-ss them. The Micn>j>tti't/*ji(l'r have 

 the larfjest numher of joints, six ; in the Tineuhr and TortricitUr 

 the numher is verj* variable : in the Ptiralulir four ; in the Noctuidir 

 generally two, but sometimes three ; in the more siKxialized families 

 one or two ; and in the rapilioius, Sjthimfi'ffr^ and most (itometridn 

 one*. The cases of the maxillary palpi in the pupa^ are well 

 developed in the generalized families, the Tinridit\ Stsimii, Cossidif, 

 and Liitiao-fiif", even when they are aborted in the ima;^o ; in the 

 Piintliiir and Z>i(HTni<lit they are less conspicuous, and in the 

 more spccializ<Hl Ohtfcdf wanting +. 



The labial palpi are normally well developed and .'i-jojnted, hut 

 aborted or much reduced in the Hep'uilidfr^ J'.^i/c/ii'l" , and many 

 Cossi'hr ; they may be upturned, with the 2nd joint curved, straight 

 and oblicjuo or porrect, or downcurve<l : they vary much in form 

 and scaling, the male of\en having extremely specialized develop- 

 ments, but their function beyond that of protecting and cleaning 

 the proV)osci3 is unknown. 



The antcumr arc sense-organs composed of an indefinite number 

 of joints and varnng much in length and structure ; they are 



* A. Walter, Jena. Zoit. Nat. xviii. pp. 121 173 (1884) ; id. Jena. Ge.s. 1885, 

 pp. 10-27. 



t Dr. T. A. D. Chapman, Trans. Ent. Soc. 1803. pp. 103-7. 



