28 



gnuinlatcd, and with a pale dorsal line ; anal shield a little darker 

 than the Ijody and sparsely Ijeset with long hairs. 8tigmata and idl 

 piliferous spots l)rown with i)ale centers. Under snrface of the hody 

 bluish-green. Legs black Avith the nodes bluish-green ; the ring of 

 booklets of prolegs pale brown with light center. 



J^ijy. — White, faintly glossy ; oval in outline ; one half millimeter 

 long, one third millimeter wide ; surface closely indented with large 

 irregular five or six-sided pits ; the walls of the indentations form- 

 ing sharp ridges over the surface of the Qgg. 



Neioly liatclied larva. — Length five millimeters. Color dull white 

 tinged with yellow ; head and thoracic shield dark brown ; mouth- 

 parts dull yellow ; body attennuated ; head and thoracic plate large, 

 round, flattened dorso-ventrally ; head with several long lateral hairs; 

 each al)dominal segment furnished laterally with a long stiff hair ; 

 thoracic and prolegs strong and well developed. 



The anomalous habits of this species are different from anything 

 I have been able to find published. I do not think that it is to be 

 classed with the few doubtful Lepidopterous parisitcs that have been 

 recorded or with the many inquilines known to science. 



Of the former the following are the most striking examjiles : 

 First, the two moths described by AVestwood in the Trans. Ent. »S()c. 

 London, for 1S7G and '77, which are i)arasitic, in the sense of resid- 

 ing upon, the one on Fuhjora candelaria, the other upon a species 

 of Aphaena, also a member of this family Fuhjoridae. Westwood is 

 of the opinion that in each case the Lepidopterous larva feeds upon 

 the waxy excretion of its host without in any way injuring it. 

 .Second, the two Tincids, mentioned by Mr. Westwood (l.-c. 1S77, p. 430) 

 as being parasitic upon the three-toed sloth. Speaking of these 

 moths he says : "From the information I received with the last 

 mentioned specimens, I believe it Avas among the hairs of the Bradf/pus 

 that the moths liad either been reared or had taken up their 

 abode." 



The remaining instance dcscril)ed by AVestwood, that of a single 

 Bombyckl moth bred from the puparium of a Tadiina as well as 

 that described by J. A^^ Lea in the Tj'ans. Ent. Soc. London, 1853, 

 of a moth bred from pupa of Lasiocampa trifoUi are each too 

 douljtful to serve as a basis for any conclusion. 



In case of inquilines of Avliich many have been described (see 

 especially papers by AValsli on Insects inhabiting AVilloAV Galls. Proc. 

 Ent. Soc. Phila,. Yol VI, p. 270, also his report as state entomologist 

 of Illinois, ]). 70) it is sujiposed that they are vegetable feeders 



