Feb., '09] ENTOMOLOGICAL NEWS. 5! 



Third larval stage. Yellow, ringed with black as before; whitish 

 between the segments. Head yellowish-green; a black band above the 

 mouth parts, a black band across the front not quite joining another 

 on each side. Feet yellow. Lateral warts on Ti yellow ; the remaining 

 ones on this segment, those on Aio, and the lateral warts on A 9 , 

 black. On all the other segments the warts usually yellow ; sometimes 

 the submeclian row yellow, the others black ; sometimes the corre- 

 sponding warts on one side yellow, on the other side black. 



Fourth lari'al stage. Bluish-white, powdery, with the black transverse 

 lines confined to the dorsal area and fading out as the larva grows. 

 Head yellowish green banded with black as before, the bands narrower. 

 Feet yellow. Anal plate and claspers yellow with a black band and 

 black horseshoe mark. The large dorsal tubercles on T 2 and T 3 

 spined, orange-color becoming red later, and ringed with black at base. 

 Median wart on A s large spined, pale, yellow ringed with black at base. 

 All the remaining warts black, and spined or roughened, the submedian 

 rows more prominently so ; except on the thoracic segments, the lateral 

 rows, although slightly spined, approach the smooth shining appearance 

 of the next stage. Occasionally some variation in the color of the warts, 

 the submedian row on the abdominal segments in some examples yellow 

 instead of black. 



Fifth larval stage. Color as before; no trace of the black rings. 

 Plead yellow, the black bands still narrower and interrupted. Feet 

 yellow. Anal plate edged with yellow and black. Anal claspers green 

 with a black hollow triangle. Dorsal tubercles on T 2 and T.i smooth, 

 coral-red, yellow at base with a black ring. Median tubercle on A 8 

 yellow with a black ring at base. All the other tubercles black, rounded, 

 smooth and shining. A black spot over each abdominal foot. Tn 

 this and the preceding stage the substigmatal ridge is prominent, but 

 not differing noticeably in color from the other portions. No meas- 

 urements are given in the above descriptions, but the sizes are approxi- 

 mately those of promethea. The moths, especially the males, are 

 smaller and slighter than typical angulifcra and but little above the 

 average size of promethea. 



I have not been able to learn anything: further of the dis- 

 tribution of this form, or whether it intergrades with typical 

 nur/ulifcra. Its abundance locally and the persistence of its dif- 

 ferences from angulifcra through all obtainable examples seem 

 to indicate a well defined local race. Co-types and specimens of 

 the cocoons are in my own collection and also in those of Dr. 

 William Barnes, of the Academy of Natural Sciences, Phila- 

 delphia, and of the U. S. National Museum (Accession No. 

 48,676). 



