132 ENTOMOLOGICAL NEWS. [March, '(X) 



lines on the second and third abdominal segments are distinct- 

 ly black and like long, slender triangles. The hump over the 

 3d pair of prolegs more pronounced and darker than the rest. 



The fourth moult occurred May 3Oth, and the larva was 

 quite two inches long-, slender, lead-gray, with markings as after 

 third moult. 



The head of the mature larva is gray, streaked with lighter 

 color and a short unnoticeable black dash either side of the 

 mouth. Body light gray with a faint reddish brown tint. 

 Lower lateral row of bristles or setae. Tubercles reddish. A 

 cross triangular saddle-like spot over the 5th abdominal seg- 

 ment. Under side of body leaden with round black spots 

 shaded behind by deep red. No hump. 



This larva seems very difficult to rear in confinement, as all of 

 my specimens died before time to pupate, the last one on June 

 I3th. In the past six or seven years, this moth has not been 

 abundant here, despite the fact a single female in captivity laid 

 for Mr. Dodge 871 eggs. Atmospheric or weather conditions, 

 breeding disease, are responsible for the fatality among Cato- 

 cala larvae and not their parasitic foes. These larvae were fed 

 on shag bark hickory which Mr. Dodge assures me is their 

 food plant. However, after searching for three years, I have 

 yet the first larva to find in the woods, though I have taken cat- 

 erpillars of C. cpione, residua, habilis, obscura, angiisi and rob- 

 insoiii on hickory. As large a "worm" as it is, when full 

 grown, it is difficult to see how it can escape the collector. 



Another species about as common as vidna and often taken 

 with it on white oak is C. robins oni, a single female of which 

 laid 902 eggs, Mr. Dodge informs me. The same gentleman 

 secured from a female of C. amatrLv, a rare moth here, 436 



While the past season was certainly unfavorable for Cato- 

 cala larval growth in most species, it was singularly favorable 

 for the growth of C. ill e eta larvae, despite the killing frosts of 

 April. 



During this season, as through last summer, on the same 

 walnut bush and the same willow I took larvae of piatrix and 

 cara from the 29th of May to the loth of August, but did not 



