Dec, igio.l MaTAUSCH ; EnTYLIA GeRMAR AND ITS FORMS. 263 



In the series of Connecticut specimens the females predominated 

 somewhat over the males ; 7 per cent, of them were of the different 

 Publilia-iovms including the transition form shown in Fig. 4, which, 

 moreover, seems to be very close to P. porrecta Fowl. 



I have in my collection in addition to the Entylia-Publilia-iorms a 

 fine pair from Prof. J. B. Smith. This was taken in Jamesburg, N. J., 

 and stands between E. concisa Walker and E. sinuata var. mira Butl. 

 From Mr. William Beutenmueller I have received a female which is 

 somewhat more like the concisa-form. It was collected in June in 

 the Black Mts., N. C. Mr. William T. Davis has given me four 

 females of the concisa form collected in Alexandria Co., Va., June 

 14, 1907. A male taken by Mr. Ch. Olsen in Staten Island, N. Y., 

 Aug. 16, 1908, belongs to E. bactriana Germ, and another male of 

 the same form was taken by Mr. H. Mueller in the Bronx, N. Y., and 

 I have myself taken a male of the same size and more like the female 

 bactriana in Queens, Long Island. I have received from the firm 

 Staudinger & Bang-Haas several specimens taken in Rio Grande do 

 Sul, Brazil, together with a specimen from Peru. The females in 

 this series vary among themselves, but they differ from the northern 

 forms in the shape of the anterior thoracic prominence which is 

 strongly directed anteriorly and in the much lower posterior thoracic 

 prominence. The single male, which I have represented in Fig. No. 

 3, is undoubtedly a southern variety. 



Reference to the literature shows that the Membracid I have been 

 considering is distributed over the whole American continent from 

 Canada, through the United States and Central America to South 

 . America. 



The great variation in the series from Connecticut is very interest- 

 ing because all the specimens were taken at the same time, on the 

 same species of plant and in a very restricted area. It would seem 

 therefore that the variation could hardly be attributed to the effects 

 of external conditions. Owing to its remarkable variability E. 

 sinuata, which has been known since 1771, has been described under 

 no less than 21 different names. 



