18G5.] 231 



description, I propose for our genus the generic terra (Eta, that of 

 Pvenloptera being already pre-occupied in Insecta. Our species will 

 thus be known as (Eta compta. Under the number 821, Prof. Poey 

 sends a specimen of a very brilliant little species, which offers much 

 casual resemblance to Cj/dosia and GCfa ; the character of the head 

 and the neuration of the secondaries, induce me to refer it to the 

 Tineitcs. 



I have not cited the MSS. determinations of Prof I'oey in this Paper, 

 but contented myself with giving the nmubers of the MSS. Catalogue, 

 as in my Paper on the Cuban Sphingidre, and for pretty much the 

 same reasons. But nine of the species are determined. Six of these — 

 Nos. 2U7, "Lithosia bella;" 613, " Dejopeia nobilitata;" 175, " Oiketi- 

 cus Poeyi;" 79, -'Euproctis argentiflua;" 112, " Arctia jussioea?;" 511, 

 " Erithales guacolda," — received specific names which, with an unim- 

 portant change in one instance. I have adopted. The remaining three 

 are Nos. IGfi, " Lithosia tessellaria" {Halindota cincti'jies, va.); 191, 

 '•Ecpantheriascribonia " {Ecpantheria albicornis, m.), and 187, "Borc- 

 byx llelops" (Ammiilo I'mjnnutus, m). The rest are undetermined. 



The specimens are sometimes in good condition, but of certain spe- 

 cies I am unable to give perfectly complete descriptions on account of 

 the faded or defective state of the material. I think that in no instance, 

 however, has this interfered with the intelligibility of the descriptions. 

 It is to be hoped that the Society will receive further material of some 

 of the species, so that we may become better acquainted with them. 

 I express this desire in particular with regard to P.-ij/chonoctiui personalis, 

 Ht/iivnopi^ytlic thoracicvm and Xijhiitcs plgcr. The former genus is 

 very interesting if we accept the hypothesis which I here adopt, that 

 the % and 9 specimens are correctly associated. In this genus the struc- 

 tural characters are so opposed in the two sexes, that these would not be 

 referred to the same genus, if considered singly. The coloration alone 

 appears to unite the specimens. The oral and pterogostic structure of 

 the % , induce me to refer it to that anomalous sub-family, the Psychidae, 

 where great sexual differences are, indeed, not unusual. The discovery 

 of the immature stages of this genus cannot fail to be attended with 

 great interest. We are frequently deceived by the appearance* of in- 



* I wdiiM not bp understood as differing from the strictures that scientists 

 have passed upon Dr. Emmons' State work on Insects, but it seems to me that 

 the reason that Cressonia jufjlamUa is therein determined as ''Bombyx" — and 

 Passalus cornutus as "Scarites" — is, that they look like it. And this illustrates 

 the point. 



