terminal segment in some male Hemiptera. 413 



without dissection its large upper face is noticed to be 

 bitid. On taking out the cedeagus it is found to be a 

 very remarkable organ ; it is divided by a transverse 

 joint into two parts : of these the lower is probably the 

 theca ; it is nearly cylindrical, polished, and bears some 

 longitudinally raised lines ; from the joint between it and 

 the apical part of the oedeagus there spring, on the 

 posterior aspect, two curious elongate tentacular pro- 

 cesses of pallid colour ; the apical half is of more com- 

 plex structure, and is divided into two parts by a longi- 

 tudinal cleft : on the posterior aspect, at the base of this 

 cleft, there is an oval process just between the two 

 tentacles I have already described ; on the front aspect 

 there is a prominent pointed process projecting, and on 

 each side of this a pallid tentacle considerably shorter 

 than those on the posterior aspect ; the terminal face of 

 the cedeagus presents the appearance of a broad truncate 

 process of pallid colour, cleft along the middle, and 

 bearing on each side of the cleft a large black oval 

 prominence, the extremity of each prominence being 

 free and pendent over the front of the oedeagus. 



The lateral appendages in Poecilochroina lata are not 

 very conspicuous, but consist of a polished spinose hook, 

 placed one on each side, the apex of each hook being a 

 little broader, so as to form a chisel-like edge. A second 

 smaller hook, the superior lateral process, crosses the 

 larger hook near its base, as if to afford it support. 



The inferior process is absent on the mesial line, but 

 on each side there is a raised carina extending far 

 upwards, and it is from the upper part of this carina 

 that proceeds the second hook 1 have mentioned above 

 under the name of the superior lateral process. 



25. Pcecilochroma Itardwieki, Hope (subfam. Scutel- 

 lerince). Hab. Himalaya. Fig. 23, PL XIV. — On ex- 

 tracting the terminal segment of the male, it is found to 

 be broad, and the rectal-cauda is short, of a pallid tawny 

 colour, hairy, and bears on each side of its upper face a 

 curvate pointed spine or horn : the diaphragm is mem- 

 branous and pallid in colour. On lifting the cauda the 

 very large theca is displayed ; it is smooth and polished ; 

 the cedeagus cannot be seen. The inferior process is seen 

 below the cauda as a ridge or carina forming a curve 

 with the concavity upwards. The lateral appendage is 



