192 Journal New York Entomological Society. [Voi. xv. 



nients. Owing to the sticky secretion of the dermal glands a deposit 

 of trichomas gathers on the larva in this stage, though, owing to the 

 absence of spines, this deposit is thinner than in the previous stage. 

 ... In the final stage the increase in the body surface, which is not 

 accompanied by any great increase in the number of dermal glands, 

 results in there being on the body only a very slight deposit of tri- 

 chomes, if any at all, so that the larvse are freely exposed on the 

 leaves of their food-plant." * 



But by far the most remarkable detail of the account of Duges 

 relates to the eggs. These are stated to be stalked and laid in groups 

 of 100-150. These eggs are disposed in two layers or stories, those 

 of the upper story being elevated above the others by slender stalks. 

 The group consists first of a row of eggs attached at one extremity by 

 a sort of foot and in contact with each other. This is followed by a 

 second row, parallel to the first, but these eggs are upon slender stalks 

 which raise them above the lower layer. This row is followed by a 

 third one of low -stalked eggs and this by a fourth row of long-stalked 

 ones. The arrangement is somewhat irregular and the long-stalked 

 eggs are less numerous than the others. As far as I am aware no case 

 of eggs upon stalks has ever been recorded for the Chrysomelini by 

 other observers. In the entire group of Chrysomelidas, with the 

 exception of this single case, stalked eggs are known only from the 

 Clytrini. Nevertheless it can hardly be assumed that Duges was in 

 error, as in other respects his description of the eggs answers very well 

 for this group and he evidently bred the species from these eggs. 



Leptinotarsa U7idecimlineata is credited to the fauna of the United 

 States on the strength of an old record for southern California which is 

 erroneous beyond a doubt. Mr. G. Beyer, who collected thoroughly 

 in Lower California, writes me that he did not meet this species there. 

 Dr. Duges' records for the states of Michoacan and Guanajuato prob- 

 ably indicate the northernmost range of this species. 



The record of this species from Matamoros in Tamaulipas, near 

 Brownsville, Texas, by C. H. T. Townsendf is based upon an erron- 

 eous determination. The specimens are described in detail by Town- 

 send and are unquestionably the species recently characterized by Mr. 

 Chas. Schaeffer as Leptinotarsa texana. % 



* L. c, p. 146. 



t Trans. Tex. Acad. Sci., Vol. V, pp. 82-84, 1903. 



J Science Bulletin, Brooklyn Inst. Arts & Sci., Vol. I, p. 239, 1906. 



