277 



Fig. 113. Vibilia cultripes Vosseler (Ceph ^, Us </■ — ^after Behning, 1925). 



229 



The body is thickset with a thick integument tuberculous laterally. 

 The head lacks a rostrum, is almost rectangular, and its height slightly 

 more than its length, which is equal to the first two somites of the pereon. 

 The eyes are very large; in females they are elongated-reniform and 

 occupy about 1/3 the lateral surface of the head; in males they are dorsally 

 broadened, contiguous, and occupy more than half the lateral surface of 

 the head. Antennae I are equal in length to the head and somite I of the 

 pereon together and their base is short; the 1st segment of the flagellum is 

 ovate (lateral view) and its apex round; the flagellum is equal to the head 

 in length; the rudimentary 2nd segment is apically barely discernible. 

 Antennae II in females are not longer than antennae I, are six-segmented, 

 all the segments with convex margins, and each succeeding segment 

 somewhat narrower than the preceding one; the margins of the 4th-6th 

 segments bear minute setae; antennae II in males are eight-segmented, 

 longer than antennae I length by at least three distal segments of its, 

 and the margins of the last four segments are armed with setae. In the 



