THE CAXADIAN ENTOMOLOGIST. 251 



Tacniocampa Guen. 



Section i. — Thorax iintufted. 

 Alia Guen. 

 Oviduca Guen. 

 Pacificata Harve}'. 



Section 2. — Thorax with a weak, flat, furrowed tuft behind the collar. 

 yonnani Grote. 



■ON THE SPECIES REFERRED TO ORTHODES BY GUENEE: 



BY H. K. MORRISON, CAMBRIDGE, MASS. 



In Mr. Grote's recent *' List of the Noctuidae '' four of the five species 

 ■described by Guenee are marked unidentified. With a very large material 

 (nearly 100 specimens of the different species, for many of which we are 

 indebted to Mr. F. C. Bowditch, Avho has found them common in the 

 vicinity of Boston) before us, we have attempted to straighten out the 

 •species and to characterize the two genera to which we refer them. 



Mr. Cxuene'e, in instituting this genus, comprised under it many 

 •discordant forms, and in his preliminary remarks he forsees the necessity 

 of a future generic separation of the species. 



^^'e restrict Orthodes to the group of which injinna is the type, and 

 also the most widely known member. 



Orthodes Guen., Noct, vol. i,p. 371 (1852.) 



Imagines of medium size. The eyes hairy ; antennae simple in both 

 •sexes ; the palpi stout, erect, thickly but evenly clothed ; the terminal joint 

 short, but distinctly separated from the other two : the collar rounded, 

 distinctly lobed, and well separated from the thorax ; in infirma there 

 is an open space between the two lobes. The thorax untufted, its 

 villosity smooth and pressed down ; the abdomen untufted, in the female 

 ■slightly exceedir^ the posterior wings ; in the male long hairy tufts which 

 have their orisjin at the base of the ofenitalia. enclose and extend far 

 beyond the parts ; the anterior wings rapidly increasing in width from the 

 base outward, triangular, the apex and internal angle rounded. The 

 •spots and lines are very clear and evident. Beneath, the males have on 

 the median space an irregular, slightly raised patch of closely compressed 

 hair. 



