174 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



as indicated in the above synonymy. It may be at once distin- 

 guished, however, from Enchenopa binotata Say, the only other 

 representative of the subfamily Membracinae in Connecticut, by 

 the lack of yellow markings on the dorsum. 



Abundant throughout the northeastern part of the United States. 

 A grass-inhabiting species usually taken in sweeping. Common 

 in pastures. Seems to prefer leguminous plants and is partial to 

 alfalfa and sweet clover. 



The eggs are laid at the base of the stems and tops of the roots 

 of the host plant and the species usually winters over in the egg 

 stage although there is some evidence to the effect that the adults 

 may occasionally survive by hibernation. 



Hosts : Alfalfa, sweet clover, wild carrot, joe-pye weed, daisy. 

 New England aster. 



New Haven, 6 July, 1904 (H. L. V.) ; 30 July, 1904 (B. H. W.) ; 30 

 July, 1914 (Q. S. L.) ; East Wallingford, 6 July, 1904 (W. E. B.) ; Scot- 

 land, 27 July, 1904 (B. H. W.) ; Branford, 27 June, 1904 (H. L. V.) ; 

 Portland, 8 Aug., 1913 (B. H. W.) ; Litchfield, Aug. and Sept. (L. B. W.) ; 

 Kent, 10 Aug., 1918 (M. P. Z.) ; Goshen, 4 July, 1919 (M. P. Z.) ; Corn- 

 wall, 16 Aug., 1920 (K. F. C.) ; Westport, 24 June, 1921 (W. E. B.). 



Enchenopa Amyot and Serville. 



Distinguished from the preceding genus by the fact that the 

 lateral ridges of the pronotal horn are located about equally distant 

 from the superior and inferior margins, and both the superior and 

 inferior margins are strongly flattened and foliaceous. 

 E. binotata (Say). (PI. iv, 25.) 



1824. Memhracis binotata Say. Narr. Long's Exp., App. ii, 301, 



1851. Enchophyllum binotatum Fitch. Cat. Ins. N. Y., 47. 



1851. Enchenopa binotata Walker. List Horn. Brit. Mus., 481. 



185 1. Enchenopa brevis Walker. List Horn. Brit. Mus., 492. 



1854. Thelia binotata Emmons. N. Y. Agr. Rept., v, 156. 



1858. Enchenopa bifusifera Walker. List Hom. Brit. Mus., Suppl. 125. 



1903. Enchenopa porrecta Buckton. Mon. Memb., 51. pi. 6, fig. 5-5b. 



1913 Enchenopa permutata Branch. Kans. Univ. Sci. Bull., 8. iii. 



A very abundant species on trees, shrubs and vines. Partic- 

 ularly common on butternut, locust and bittersweet. Seldom 

 found in the grass, in which respect it differs from the preceding 

 species. At once identified by the two bright yellow spots on the 

 dorsal line of the pronotum. 



The life history of this species has been described in detail by 

 Matausch (Matausch, Ignaz. Journ. N. Y. Ent. Soc, xx, 58-67. 

 191 2) and by Funkhouser (Journ. Econ. Ent, viii : 368-371. 



1915). 



Hosts: Locust, wild grape, bittersweet, hickory, sycamore, 

 dogwood. 



New Haven, 19 July, 1913 (L. B. R.) ; 6, 9 July, 1914 (M. P. Z.) ; Bran- 

 ford, 29 July, 1904 (P. L. B.) ; Wallingford, 3, 8 Aug., 1912 (D. J. C.) ; 

 Litchfield, Aug. and Sept. (L. B. W.). 



