PUPAE OF SOME MAINE SPECIES OF NOTODONTOIDEA 59 



length with two short recurving hooks at the tip, each 

 of which bears two or more very fine setae. 



Melalopha. 



bb. Thorax and abdomen never thickly covered with very 

 fine, short setae; cremaster never as described above; 

 sometimes absent. 



c. Abdominal segments 2 to 7 with a slight ridge at both 

 cephalic and caudal margins, the cephalic ridge 

 interrupted by deep pits giving it the appearance 

 of a row of square tubercles ; face-parts and ap- 

 pendages not elevated, making a smooth even sur- 

 face; cephalic end of body not elevated between 

 the antennae ; cremaster short. Apatelodes. 



cc. Abdominal segments 2 to 7 never with ridges; ap- 

 pendages distinctly elevated ; cephalic end of body 

 elevated between the antennae ; cremaster never 

 present. Harpyia. 



aa. Maxillae always more than one-third the length of the 

 wings ; never with both prothoracic and mesothoracic legs 

 meeting on the meson; abdomen usually rather coarsely 

 punctate. 



b. Maxillae from one-half to three-fifths the length of the 

 wings ; mesothoracic legs meeting on the meson caudad 

 of the maxillae ; appendages roughened with deep inde- 

 terminate striations ; abdomen coarsely punctate ; a dis- 

 tinct, deep furrow on the dorsum between the ninth and 

 tenth abdominal segments ; cremaster short, bifurcate, 

 each half with several short, spiny projections. 



Datana. 



bb. Maxillae more than three-fifths the length of the wings ; 

 neither prothoracic nor mesothoracic legs meeting on 

 the meson caudad of the maxillae ; appendages usually 

 with shallow striations ; a distinct furrow never present 

 on the dorsum between the ninth and tenth abdominal 

 segments ; cremaster not as described above, 

 c. Entire body surface with coarse deep punctures ; ce- 

 phalic margin of the movable abdominal segments 

 with large lunate punctures and a ridge with a row 

 of large distinct punctures just caudad of it ; cre- 

 master short, rugose, slightly bifurcate; bearing six 



