OO GEO. H. HORN, M. D. ^ 



While on the subject of the Dascyllidae it might be as well to call 

 attention to Psepheiius, a genus at present placed among the Parnidae. 

 It is provided with a very large troehantin to the anterior coxae, and 

 there is an entire absence of the prosternal lobe which is seen in all 

 the Parnidae protecting the mouth beneath. The abdomen is also 

 constructed on a plan entirely at variance with the latter family but 

 considerably resembling many of the smaller Dascyllidae. I do not 

 feel fully prepared to defend a union of Psephenus with the Dascyllidae, 

 but merely to call attention to the obvious disturbance of the otherwise 

 homogeneous structure of the Parnidae by retaining it there. 



In a paper which I hope to present in the future this genus will be 

 more fully discussed and with it Lara also, which, though less irregular 

 in its characters, introduces an element in the Parnidae which does not 

 seem to fully belong there. Having but recently seen an absolutely 

 perfect specimen of this insect, the amount of study which I have been 

 able to devote to it is not sufficient to warrant a decided expression of 

 opinion either way. 



Bibliography and Synonymy. 



ELATEEID^. 



APHRICUS Lee. 

 A. californicus Loo., Trans. Am. Philos. Soc. x, p. .501. 



APLASTUS Lee. 

 A. angusticollis Horn, Trans. Am. Ent. Soc. 1874, p. 25. 

 A. tenuiformis Horn, loe. cit. 

 A. corymbitoides Horn, loe. eit. 



A. speratus Lee., Proc. Acad. 1859, p. 73; Horn, loe. cit. p. 26; 9 Horn, supra. 

 A. optatus Lee., Proc. Acad. 1861, p. .349; Cand. iv, p. 489, }A. 6, fig. 12; Horn, 

 loe. eit. p. 26. 

 convexicoUis 9 Lee, (Anamesus), Proc. Acad. 1866, p. 393. 

 A. molestus Horn, loe. cit. p. 27. 



PLASTOCERUS Lee. 

 P. Schaumii Lee., Trans. Am. Philos. Soc. x, p. 502. 



vav. /rater Lee., Proc. Acad. 1859, p. 73; 1866, p. 393; 9 Horn, supra, 

 var. macer Horn, supra. 



