THE 



Ohio Journal of Science 



ITHMSHHD BY THE 



Ohio State Univkrsity Scientific Society 



VolumeXVII FEBRUARY, 1917 No. 4 



TABLE OF CONTENTS 



Drake — A Surve}* of the North American Species of Merragata 101 



Henderson — The Crowfoot F'aniily in Ohio 106 



Lathrop— A Preliminary List of Cicadellidie (Homoptera) of South Carolina 



with Descriptions of New Species 119 



SCHAFFNER — Additions to the Catalog of Ohio Vascular Plants for 1916 132 



A SURVEY OF THE NORTH AMERICAN SPECIES OF 



MERRAGATA. 



B}^ Carl J. Drake. 



The genus Merragata (family Hebridce), based on M. 

 hebroides from the Hawaiian Islands, was established by F. B. 

 White in "Annals and Magazine of Natural History" (London), 

 Vol. XX, page 113, 1877. The genus is closely allied to the genus 

 Hebrus Curtis {Nceogeits Laporte), but differs from it in having 

 the fourth and fifth segments of the antennae conjoined without 

 a trace of a suture between them. In the " Biologia Centrali- 

 Americana," Rhynchota, Vol. II, page 121, 1898, Dr. G. C. 

 Champion slightly amplifies the generic description of the 

 antennas as given b}^ White so as to include two new species 

 from Mexico and Central America. In the same volume Dr. 

 Champion also describes the male of M. hebroides White from a 

 single specimen that w^as taken at Chapultepec, Mexico, and 

 states, "It is probable that the species has been introduced 

 into the Hawaiian Islands." 



The new Nearctic forms described herein agree with the 

 tropical and semi-tropical species in having the tarsi composed 

 of two segments and the antennae of four, the minute segment 

 at the base of the third segment of the antenna not being 

 counted as a true segment, but as a part of the third. The heads 

 of the Mexican and Central American species have either a fine 



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