204 THE CANADIAN ENTOMOLOGIST. 



PRELIMINARY CATALOGUE OF THE ARCTIID^ OF TEM- 

 PERATE NORTH AMERICA, WITH NOTES. 



BY JOHN B. SMITH, NEW BRUNSWICK, N. J. 



( Coniinued from page i8o, Volume xxii. ) 



Genus Halisidota Hiibner. 



1816 — Hiibn., Verzeichniss, 170. 



1855— Wlk., C. B, Mus., Lep Het, III., 732. 



1862 — Morris, Synopsis, 347. 



1873 — Stretch, Zyg. & Bomb., 87, fig. venation. 

 Head rather well developed ; palpi exceeding front ; tongue moderate, 

 but somewhat variable in the species. Antennae of ^ long, lengthily bi- 

 pectinated to the tip, a single branch to each side of each joint. Legs 

 short and stout, posterior longest and weakest ; spurs normal, but short ; 

 claws of tarsi simple. 



Primaries with v 10 out of the subcostal before the end of the cell ; 

 7-9 on a stalk from the same point with 6 ; 8 and 9 branching just before 

 the tip ; 4 and 5 from the same point at the end of the median ; 3 from 

 the median some distance before the end of the cell. 



Secondaries with 8 from about the middle of subcostal and very short ; 

 6 and 7 from the same point at end of the subcostal ; 4 and 5 together 

 from the end of the median ; 3 from the median before the end of the cell. 



If. carycB served as the subject on which the above studies were made. 

 It is not improbable that there may be some difference in details of 

 structure in the species. Many of the described forms I have seen but 

 casually, and of a few I have seen large series. This is, in my opinion, 

 the most difficult genus in the Arctiidce. There is 2l phytophagic variation 

 in the larva, and the larvae are not all of the same type. From the 

 material in the National Museum collection it would seem, too, that larvge 

 widely different in type, not color merely, produce insects that are super- 

 ficially almost indistinguishable. The synonymy is involved, and I give it 

 exactly as I have found it. 

 H. agassizii Pack. 



1864 — Pack., Proc. Ent. Soc, Phil., III., 128, Halisidota. 

 1873 — Stretch*, Zyg. & Bomb., 87, 102, pi. IV., ff. 8 and 9, and pi. 

 X-, f. 7, Halisidota. 



