Materials, Their Taxonomy and Natural History 67 



whether Say found this form on the Arkansas or not, I have only included his 

 possible notation because it is often so included in taxonomy. 



Doryphora decemlineata Say, 1824. Journ. Acad. Nat. Sci. Phila., Ill, pt. 2, 



p. 453. 

 Doryphora dejecta StS.1. Specimens identified by Horn and others are found 



in many museums and collections, and while closely like St^l's dejecta, 



both are distinct, as I can testify from having both alive at the same 



time to compare. 

 Leptinotarsa decemlineata Say var. texana Schaeffer, 1906. Bull. Brooklyn 



Inst. Arts, Sci.. I. No. p. p. 239. 



Schaeffer's description is as follows : 



"Leptinotarsa decemlineata var. texana, new variety. Form and size of 

 decemlineata but differs in having the punctures of the striae regularly placed, 

 not confused. The first black elytral vitta abbreviated at about the middle, the 

 submarginal entirely absent and the epipleurae entirely pale, from base to apex. 



" Brownsville, Texas. 



" I have given this form a name, which seems to be quite constant in southern 

 and southwestern Texas, as it stands in several collections as dejecta Stal, from 

 which it differs in several points. In dejecta the suture is always black, the 

 third and fifth intervals are only slightly wider than others, very distinctly 

 and much more in var. texana, the inner margin of elytral epipleurae and apex 

 is always black and all the markings on elytra have a very distinct aeneous tint, 

 which is never the case in decemlineata and var. texana, and is twice mentioned 

 in Stal's description. The specimens of dejecta, which I have taken from 

 Brownsville, Texas, have the suture, the sixth elytral interval, from apex to not 

 quite to base and the eighth from base to not quite to middle blackish-feneous ; 

 the eighth interval is in some specimens at apex also darker, as well as the 

 fourth, which is then more or less connected with the vitta on the sixth interval, 

 the sutural interval being counted as the first." 



Schaeffer is entirely correct in distinguishing the form from Stal's L. dejecta 

 and correct in his notation of the elytral punctation, a character that at once 

 places it as allied to L. juncta and not L. decemlineata. When reared, the 

 juvenile stages are unmistakably like juncta and not like decemlineata. 



Description of Living Animals. 

 (Plate 7, fig. 5.) 



Imago: I would add to Schaeffer's description as follows: Color in life, 

 head, pronotum, and elytral ground-color pale yellow, often almost white. 

 Pronotal color-pattern variable in size of spots, but fusions between them are 

 rare. 



Size: Constant. 



Sexes: Female with sternal sclerite of last abdominal segment rounded flat; 

 male with same sclerite truncate, grooved. 



Food: Solanum carolinensis, S. elceagnijolium. 



JirvENiLE Stages. 



Eggs: Exactly like L. juncta, only paler; 2.5 to 3 mm. long, 1 to 1.5 mm. 

 broad. Incubation lasts 5 to 12 days ; average 7 or 8 days. 



First larval stage: Exactly like L. juncta, only paler. Length at end of 

 stage, 3 to 4 mm. 



Second larval stage : In all respects like L. juncta, but color is paler. Length 

 at end of stage, 5 to 7 mm. 



