164 PROCEEDINGS OF THE ACADEMY OF [April, 



cave, apex acute, surface finely 

 marked with longitudinal linear 

 series of minute punctures. Ceph- 

 alic femora equal to the length 

 Fig. e.—Steleoxiphus catastates n. gen. o^ mesonotum and half of the 

 and sp. Lateral \iew of apex of metanotum, proximal flexure dis- 

 abdomenof tj-pe. (x 2.) ..• x i i. n • j f ^-u 



tinct but small, remamder oi the 



femur multicarinate; cephalic tibise 

 slightly shorter than the femora; cephalic tarsi with the metatarsus 

 distinctly longer than the remaining joints. Median femora about 

 equal to the metanotum in length; median tibise somewhat shorter 

 than the femora; median tarsi with the metatarsus very slightly shorter 

 than the remaining tarsal joints. Caudal femora extending to the 

 middle of the fifth abdominal segment; tibiiie distinctly but not very 

 greatly shorter than the femora; tarsi with the metatarsus about equal 

 to the remaining tarsal joints. 



General color apple green, becoming oil green on the limbs and 

 touched with ochraceous on the ventral section of the head, and also on 

 the presternum, cephalic and caudal sections of the mesosternum and 

 cephalic section of the metasternum and a narrow ventral median line on 

 the abdomen is of the same color. The subgenital opercule and cephalic 

 tarsi are chiefly pale ochraceous, while the ochraceous on the caudal 

 section of the mesosternum is overlaid with a brownish spot. Eyes 

 vinaceous-cinnamon, antennae ochraceous. 



Measurements. 



Length of body, 97 mm. 



Length of antenna, ... + 8.1 " 



Length of pronotum, 3.2 " 



Length of mesonotum, 17.2 '' 



Length of metanotum (including median segment), ... 18 " 



Length of median segment, 4.5 " 



Length of abdomen 42.5 " 



Length of subgenital opercule, 24.5 " 



Length of cephalic femur, 26 " 



Length of median femur, 17.8 '' 



Length of caudal femur, 22 " 



The type is unique. 



There is a possibility that this species is the female of Paraleptynia 

 fosteri Caudefl, known only from the male, but it does not appear right or 

 proper to assume that such strikingly different antennal characters 

 exist in the sexes of the same species. The possibility exists, however 



