Sept. 1896.] Dvar: Life History of Euclea Delphinii. 125 



THE LIFE-HISTORY OF THE FLORIDA FORM OF 

 EUCLEA DELPHINII. 



Bv Harrison G. Dvar, .A. M., Ph. D. 



(Plate V, Figs. I-13.) 



Larvae found at Lake Worth, Florida, in January, 1896, differed 

 from any previously seen by me, and were supposed to represent some 

 species of Euclea or Mofioleiica not previously bred. However, the 

 moths which emerged proved to be E. delphinii. I present herewith 

 an account of their life-history in advance of that which Miss Morton 

 and I v^ill work out of the New York form, since I have been fortunate 

 enough to observe all the stages. I am much indebted to Mr. F. Kin- 

 zel, of Palm Beach, for a supply of food plants during the winter 

 months. 



The larvae are nearest in pattern and structure to the form provi- 

 sionally called E. pmnulata {elliotii) by Miss Morton and myself (Journ. 

 N. Y. Ent. Soc, III, 146). They differ in coloration and in having 

 a pair of caltrope patches on the subdorsal horns of joint 13, which are 

 absent in pcenulata. In both there is a single group of detatchable 

 spines and the subdorsal line is unbroken by discolorous patches. The 

 synonymy and relations of the several forms of the delpliiuii group, as 

 well as figures of the caltropes and spines will be deferred to our paper 

 on the New York species, where we hope to discuss these matters in full. 



Special Structural Characters. 



Dorsal and lateral spaces broad, sub ventral space narrow, con- 

 tracted ; ridges very slight, the lateral the most distinct, approximate to 

 the subventral. Fleshy horn-like processes unequally elongated ; in 

 stage I bearing primitive setfe ; after first molt the subdorsal and 

 lateral rows covered with numerous urticating spines, mixed with less 

 developed spines bearing setas ; subventral row rudimentary. The sub- 

 dorsal horns are well developed on joints 3 to 5 and 11 to 13, moderate 

 on joint 8, very small on 6, 7, 9 and 10, but none are rudimentary as 

 they are in Sibine. Of the lateral row the one on joint 5 is absent. 



Depressed areas feebly developed, usually only their pale glandu- 

 lar centers visible, under favorable circumstances also the areas them- 

 selves as slight hollows, smoother than the general surface ; dorsal row 

 (i) paired, double between joints 3-4 and 4-5, ad-dorsal (2) slight; 



