Sept., 1904.] Caudell : Orthoptera from Paraguay. 187 



Type. — No. 8027, U. S. National Museum. 



I have compared this specimen with descriptions or specimens of 

 all the species from South America known to me, and find it to agree 

 with none of them. 



Paraleptynia, new genus. 



I find it necessary to characterize a new genus for a somber-colored 

 and uninteresting-appearing phasmid contained in the collection. It 

 is a member of the subfamily Clitumninae, slender of form, wholly un- 

 armed and related to my genus Parabacillus and the closely related 

 Leptynia of Pantel. It is apparently more nearly added to the latter, 

 hence the above name. It is readily differentiated from both the 

 allied genera by the antennae, which, at least in the male, the female 

 at present unknown, is about two thirds as long as the anterior femora 

 and composed of distinct segments. The terminal segment of the 

 abdomen is apically concave and hollowed out below, the cerci round 

 and differing from both Parabaccilus and Leptynia by having no basal 

 thorn. 



This genus is apparently related in some respects to section "b " 

 of the Bacillid subgenus Baculum of Saussure * based on B. ramosus, 

 an insect of uncertain habitat. But the unarmed head and non-ampli- 

 ate limbs prove its distinctness. 



Paraleptynia fosteri, new species. 



Male. Color of dried specimen, light brownish. Head longer than the prothorax, 

 twice as long as broad, unarmed ; antennas with 18 segments, i twice as long as 

 broad, basally depressed ; 2 about as long as broad, half the length of I, cylindrical ; 

 3 nearly twice as long as 1 and 2 together ; 4 about half as long as 3 ; the succeed- 

 ing ones of approximately the same length as number 3, except the last three which 

 are scarcely twice as long as broad, except the apical one which is slightly more, due 

 however to its smaller size rather than absolute length. Body unarmed ; pronotum 

 scarcely twice as long as broad, divided by a mesial transverse impression and fur- 

 nished on the anterior half with three longitudinal furrows ; mesothorax six times as 

 long as the prothorax, cylindrical, but little swollen at the insertion of the legs ; meta- 

 thorax similar to the mesothorax but somewhat shorter ; median segment not indicated. 

 Abdomen cylindrical, segments one to six about three times as long as broad, the 

 ast three segments subequal, about twice as long as broad, the seventh and eighth, 

 slightly swollen at their proximate ends, the apical segment carinate dorsally, slightly 

 tapering and posteriorly angularly incised, the lateral angles curved inwards as ob- 

 scure teeth and bordered with minute black denticles. Cerci moderately short, cylin- 

 drical, projecting obliquely downwards and bent slightly inwards at the tips, not 



*Mel.Orth., 11, 112, 1870. 



