JOURNAL 



jDpiD ]9orh 6jnlomoIogirHl Horiptg. 



NTol. IX. MARCH, 190 1 . No. ,1. 



THE GENUS SINE A OF AMVOT 6- SERVILLE. 



By a. N. Caudell, Washington, D. C. 



The species of the genus Sinea are for the most part quite closely 

 allied, and persons other than special students of the Hemiptera are 

 liable to experience difficulty in their separation. In some cases 

 both sexes are necessary for a correct determination. 



In my studies I have examined specimens of all the described 

 species of this genus except integra. The material in the collections 

 of the United States National Museum, Massachusetts Agricultural Col- 

 lege, Colorado Experiment Station, and the Museum of the State of 

 New York, has been examined. In addition Professor Uhler has 

 kindly allowed me to examine the specimens of Sinea in his private 

 collection. For authentic specimens of raptoria, caiidata, sanguisitga 

 and defectal am indebted to Mr. G. C. Champion, also, for advance 

 sheets of his most excellent article on this genus in the Biologia Cen- 

 trali Americana. This eminent author has been freely quoted. By 

 reason of his well-known ability as an hemipterist and by his having 

 examined most of Stal's types his dictum may well be accepted as final. 



A plate is given showing certain anatomical details. The external 

 appearance of the male and female genitalia is portrayed by drawings 

 made from Acholla miiltispinosa, an insect scarcely differing, in this 

 particular feature, from the species of Sinea. 



A complete bibliography, so far as known to me, is given with 

 each species. While some of the references are of minor importance 

 it has seemed well to bring them together. All references have been 

 verified except where preceded by a star (*). 



I would express my thanks to Prof. C. H. Fernald for various kind- 

 nesses, to Mr. O. Heidemann for aid and advice, and to Mrs. Fernald 

 and Dr. Dyar for aid in translating. 



