PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Fig. 3, maxilla 1 , maxilluho and hypopharynx: Basal (mp i), median 

 imp u) and apical (mp in) joints of maxillary palpus; Palpiger (pgr~): 

 Right lobe of maxillula? in situ (mxl) ; Left lobe of maxillula 1 dissected at 

 base and extended (mxl') ; Overlapping plates on outer edge of maxillula? 

 (pp) analogous plates (pp r ) at base of lacinia (I); Hypopharynx (hx); 

 Hypopharyngeal plate (hp). 



PLATE VIII. Adult and wing-venation. 



Fig. ], adult. 



Fig. 2, venation of forewing. 



Fig. 3, venation of hindwing of female. 



Fig. 4, venation of hindwing of male. 



PLATE IX. Larva? and pupa. 



Fig. 1, abdominal segment of mature larva. 



Fig. 2, anal segment of mature larva. 



Fig. 3, pupa. 



Iii the -discussion of this paper Dr. Boving complimented the 

 authors on their careful work and called attention to the rather 

 scant literature dealing with the epipharyngeal and hypopha- 

 ryngeal structures and especially to the work of the Danish 

 author, H. F. Hansen, who first observed the so-called maxillula? 

 in insects and homologized them with corresponding structures 

 in the Crustacea. 



Dr. Boving expressed his particular satisfaction in having been 

 able to call the attention of the authors to the very valuable 

 paper by Dr. A. Dampf [Zur Kenntnis gehausetragender Lepi- 

 dopterenlarven (Zool. Jahrb. Suppl. Bd. 12, pp. 513-608, 54 figs. 

 1910.)] which deals with the same morphological problems as 

 the present paper and as the recent paper lay Busck and Boving 

 [On Mnemonica auricyanea, Wlsm. (Proc. Ent. Soc. Wash. v. 

 xvi, pp. 151-163, pi. ix-svi, 1915)]. 



He regretted very much, that he and Busck by an inexplicable 

 slip of memory had overlooked the paper, of which Dr. Dampf 

 had presented him a complimentary copy, when it appeared. It is 

 a very important contribution and deserves careful consideration 

 by all students of the morphology of Lepidoptera. 



