THE CANADIAN ENTOMOLOGIST. 43 



prominence. The prothorax is free from the " casket ' and retractile ; 

 its spiracle on the posterior border ; eight pairs of spiracles are visible on 

 the sides of the "casket." The " subjoint " is situated beneath and is 

 retractile. W. Hampton Patton, Hartford, Conn. 



A CORRECTION. 



A curious error occurred in the catalogue of Arctiidce in the last 

 volume of the Can. Ent., pp. 167 and 168. Under Euchaetes egle 1 

 placed as synonyms Tatiada a?itica VVlk., and Arctia sciurus Bdv. In 

 some way they have attained specific rank in the paper as it stands. 

 They should be indented as synonyms, without the preceding generic 

 abbreviation. 



A similar error occurred under Hyphant7-ia., pp. 163-165, where 

 ptmctatissima, congrua, punctata, textor and Candida all stand as species 

 instead of synonyms as was intended. In both cases the error is 

 apparent if the bibliography is consulted carefully ; but I deem it better 

 to call attention to it so that the correction may be made in the volume. 



T. B. Smith. 



CORRESPONDENCE. 



ARCTIID^ OF NORTH AMERICA. 



Dea7- Sir : Kindly insert the following synonymical note. On page 

 231 of Vol. XXII. Prof. Smith refers to Halisidota trigona Grt. I would 

 correct this to read as follows : — 

 Halisidota specularis Her.-Sch. 



1854 — H.-S., Saml, neuer oder wenig bek, ausser. Schmett., page 



72, fig. 59, Trichroitiia. 

 trigona Grt. 



1879 — Grt, No. Am. Ent., 46, Halisidota. 

 1881 — Grt., Trans. Kansas Ac. Sci., VII., 64. 

 Habitat — Colorado, New Mexico, Brazil. 

 1 have compared Mr, Grote's description with Dr. Herrich-Schafer's 

 figure, and there is no doubt but that the two refer to the same insect. 



Harrison G. Dvar, New York. 



