38 REPORT UNITED STATES ENTOMOLOGICAL COMMISSION. 



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examine this point for a moment, using what Mr. Thomas has stated in 

 his article on Orthoptera in Lieutenant Wheeler's report of his explora- 

 tions as a basis. 



Dr. Stal holds that we have no Calopteni in North America, most of 

 the species which have usually been placed in that genus being refer- 

 able to Fezotettix. In his diagnosis of these genera the chief distinc- 

 tions given are as follows: In CalUpfenus the elytra are destitute of the 

 intercalate vein ; the posterior femora broad and distinctly serrate above 5 

 the posterior sulcus in the middle or before the middle. 



In Pezotettix the elytra are usually abbreviated or rudimentary, and 

 furnished with an intercalate vein ; the ui:)per margin of the posterior 

 femora entire and unarmed ; posterior sulcus of the pronotum some- 

 times situated behind the middle. 



The genus was established by Serville in 1831, in his article entitled 

 "Eevue Methodique des Insectes de Pordre des Orthopteres," vol. 22, 

 Annates des Sciences Naturelles, with the following as its distinguishing 

 characters : 



CalUptamus {kqHoq iTra/iai). Poslerior legs longer than the body, robust, and salta- 

 torial. Abdomen tirm, neither inflated nor vesicular. Anterior extremity of the pros- 

 ternum not covering the mouth, the latter [prosternum] having a rather robusr, 

 straight, and obtuse point [spine], A pad (rather small) between the tarsal claws. 

 Antenuge filiform, composed of more than twenty cylindric rather indistinct joints. 

 Head vertical, without frontal projection, or having one that is but slightly prominent, 

 and obtuse anteriorly. The middle cariusB of the face with a space between them ; 

 sometimes but slightly prominent inferiorly. Ocellus distinct. Tibiae neither widened 

 or channeled above; lower three-fourths of the upper side with two rows of closely- 

 set spines; first joint of the tarsi elongated. Eyes oval. Pronotum distinctly tricar- 

 inate above ; lateral carinte as prominent as the median one ; its transverse striae slightly 

 distinct. Posterior margin more or less rounded. Elytra and wings of ordinary length. 

 Legs robust. 



In this genus he included the following species : 



1. C. sanguinipes, from South America. 



2. C. italicus, from Africa and Europe. 



3. C. morio, from Africa, Switzerland, and Pyrenees. 



It is evident the author did not base his diagnosis chiefly on C. italicus, 

 as some of the characters used are made prominent because of their 

 greater prominence in one of the other of the three species. 



Afterward, in 1839, in his Histoire des OrtJioptdres, the same author 

 removed G. morio to (Edipoda, as it was in fact no Acridian ,• he also 

 returned G. sanguinipes to Acridium. He also gave a new diagnosis of 

 the genus, as follows : 



Posterior legs robust, much shorter than in the preceding genus (Acridium) ; femora 

 short, much enlarged, very strongly channeled below ; tibiae short, stout, having on 

 the lower three-fourths of the upper side two rows of spines, the basal ones very short ; 

 the under side of the femora and upper side of the tibiae fringed with fine hairs; the 

 terminal spines (or spurs) large, curved. Tarsi straight, furnished with a little pad 

 between the claws; the first joint of the posterior as long as the two last united. 



