ENTOMOLOGICAL CONTRIBUTIONS. 95 



regulariter perspersse; umbra transversa medium alam per- 

 curreute; margine anterior! apicem versus cluobus maculis 

 signato. Margo posterior umbra purpurascente, in ? na 

 magis diffusa, usque ad angulum posticum impletus; in 6 re 

 et ad mediam alam et prope angulum, in ? na prope angu- 

 lum tantum macula dilutiori interrupta. Abe posticf^ $ ris 

 albse, ? nse obscurae. 



Napa Yalley on Juglans. 



The caterpillar rests with its anal joints lifted after the 

 manner of Notodonta Ziczac or rather N. concinna, so that the 

 anal feet do not touch the leaf on which it rests, but it uses 

 them, though they are less developed than the other prolegs 

 and rather imperfect for locomotion, according to the ob- 

 servation of Professor Kivers. The skin is naked and fur- 

 nished with horny but hairless tubercles, which increase in 

 length towards the head and anal extremity, forming blunt 

 spinose appendages; dorsal surface longitudinally striped 

 with alternate black and white lines, the sides olive green 

 with a few dispersed white spots, bordered by black lines; 

 head and girdle of fleshy tubercles encircling the first pair 

 of footless joints between the legs and prolegs, bright red. 

 It is of course possible that the colors have been modified 

 by the preservative alcohol. 



TJiis moth appears to form a transition from the Cero- 

 campides to the Notodontides. It may possibly be considered 

 a new genus in which N. concinna Smith, would be a second 

 species. The slightly dentate outline of the external mar- 

 gin of the forewings distinguishes the insect from other 

 species of Dryoccimjoa and approaches it somewhat to the 

 Notodonta group, but the nervation of the wings, and its 

 larval characteristics, bring it without doubt into the 

 former. 



In markings it bears some resemblance to the European 

 Hyhocampa Milhauscri. It also shows a certain likeness in 

 nervation and outline of wings, as well as in texture of 



