37° The Ohio Naturalist. [Vol. VIII, No. 8, 



ON THE AQUATIC AND SEMI-AQUATIC HEMIPTERA 

 COLLECTED BY PROF. JAMES S. HINE IN 



GUATEMALA. 



(First Paper.) 



J. R. DE LA Torre Bueno. 



When Professor James S. Hine made his trip to Guatemala in 

 the winter of 1905, he was good enough to permit me to secure 

 his collections of Aquatic and Semi-Aquatic Hemiptera, and I 

 gladly availed myself of the opportunity. As a consequence, 

 I received one of the most notable single collections of waterbugs 

 that has been made. This collection has been in my hands for 

 study for the last three years, but owing to the breaking-down 

 of my health and to other reasons no less imperative, my work 

 on it has been so slow that it has seemed to me convenient to 

 publish what results are in shape at present, and the remainder 

 as shortly after as may be done. 



When Mr. G. C. Champion made his protracted stay in Central 

 America in 1879-83, his efforts yielded 72 species in 32 genera, 

 for the whole region treated of in Biologia Centrali Americana, 

 of which 53 species in 24 genera were captured in Guatemala. 

 The total number of species recorded from that region and noted 

 in the work cited numbered 136 in 32 genera, two being new, of 

 which records 53 species, 23 of them new, in 25 genera, were 

 found in Guatemala. 



Prof. Hine's collecting was far more successful, both as to 

 number of specimens and new and unrecorded forms, and undes- 

 cribed genera. All the families of waterbugs are well represented, 

 although no examples of eight genera were secured, these being 

 Merragata {Hebridae) , Velia and Platygerris (Gerridae) , Mononyx 

 {Nerthridae), Curicta (Nepidae), Cryphocricos {N aucoridae) , Plea 

 and Notonecta (Notonectidae), and Corixa (Corixidae) . On the 

 other hand. Prof. Hine adds to the fauna three heretofore unre- 

 corded genera and two new ones, as well as a large number of 

 undescribed species, exceeding 18. The three genera new to the 

 fauna are Rheumatohates and Trepobates (Geridae) and Martarega 

 (Notonectidae). Appropriate comment will be made on all 

 these in the proper place. 



It is my intention to present three papers on this material, 

 this being the first, the other two to follow as quickly as may be. 

 The paper here given is the work of Dr. E. Bergroth to whom I 

 submitted an unrecognized Rheumatobates and another obscure 

 Gerrid, which he kindly describes in the following pages. The 

 other two papers will be devoted to the Trochalopodous and 

 Pagiopodous forms respectively. 



