NO. 2130. NORTH AMERICA REAPHIDOPHORINAE—CAUDELL. 661 



is prolonged posteriorly above as a short sharp spine (fig. 3) ; second 

 segment of all the tarsi two or more times as long as deep; the tarsi 

 are naked beneath on the second and third segments and the tip of 

 the first, the rest covered with pile, as is the rest of the entire surface. 

 Abdomen gently tapering posteriorly; subgenital plate of the male 

 broad and short, apically truncate, the angles rounded and without 

 styles, the whole plate deeply concave and often closing back over 

 the tip of the abdomen like a lid; subgenital plate of the female sub- 

 quadrate, narrowing behind, the apical margin triangularly notched; 

 cerci simple, cylindrical, long and slender, tapering to a fine slender 

 point; ovipositor about twice as long as the pronotmn, gently curved 

 upward in the apical half, the inner valves serrate apically beneath. 



Of the two species of this genus represented in the fauna covered by 

 this paper but one is at all well estabhshed. This is the Diestram- 

 mena marmorata of Haan, the type of the genus. This species has 

 been recorded from greenhouses in Minnesota and Colorado and there 

 are a number of both sexes in the United States National Museum 

 from greenhouses in Springfield, Ohio, and Chicago, Ilhnois. The 

 female specimen from Kansas recorded by Isley as probably Ceutho- 

 philus Mens Scudder ^ is really the present species and is the only 

 record of this insect having been taken m this country outside of a 

 greenhouse, this one having been collected outdoors near a sidewalk. 

 The fragmentary and partially decayed condidon of this single speci- 

 men made this doubtful deterniination, of which the present writer 

 alone was responsible, almost if not quite excusable. 



While the above species seems to be a fairly constant visitor with 

 us, the second species, Diestrammena unicolor Brunner, is of rare 

 occurrence, havmg been reported ^ but once, by A. P. Morse from 

 greenhouses in Chicago, lUinois. 



Genus GAMMAROTETTIX Brunner. 

 Gammarotettix Brunner, Verhandl. k. k. zool. bot. Ges., vol. 38, 1888, p. 304. 

 In this genus the legs are unusually short, the posterior femora 

 bemg scarcely more than one-half as long as the msect itself. It is 

 more closely aUied to the short-legged species belonging to the fol- 

 lowing genera than to those belonging to the genera described above, 

 but is very distmct from all. A fairly full description of this genus 



f oUows : 



Head rather small, as broad as the anterior portion of the pronotum; 

 vertex between the antennae forming a pah- of tubercles about as long 

 as the basal breadth and separated from each other by a distance as 

 great as the length of one of them; antennae slender, the basal seg- 

 ment large and broad, vertically flattened;" palpi very short, th e 



1 Publ. Kans. Acad. Sci., 1905, p. 247. 



2 Psyche, vol. 11, 1904, p. 80. 



