Explanation of Plate V, 



(J. Terminal segments and genital armature. 

 Fig. 15. Discodon amplipenne, n. sp. : ninth ventral segment and 

 a portion of the genital armature. 



16, 16a. „ cleroides, Gorh. : 16, genital armature, com- 

 pletely everted; 16o, ditto, in profile. 



17. ,, melancholicum., Gorh. : ninth ventral segment 



and a portion of the genital armature. 



18,18a. ,, calidum, Gorh.: 18, eighth ventral segment; 

 18a, ninth ventral segment and a portion of 

 the genital armature. 



19. ,, purfiirascens, Gorh. : eighth and ninth ventral 



segments and the partially evaginated genital 

 armature. 



20. ,, histrio, Gorh. : eighth and ninth ventral seg- 



ments, and a portion of the genital armature, 

 in profile, the dorsal portion of the eighth 

 segment visible. 



21. „ {Silis) varians, Gorh. : ninth ventral segment 



and a portion of the genital armature. 



22. „ lampyroides, Gorh. : genital armature, com- 



pletely evaginated. 



23, 23a. ,, normale, Gorh. : 23, terminal segments, in 

 profile, the lower portion showing one of the 

 two angulate lobes of the eighth ventral 

 segment; 23a, genital armature, completely 

 evaginated. 



24. „ perplexum, Gorh. : ninth segment and a portion 



of the genital armature, in profile. 



25,25a. „ luridum, Gorh. : 25, terminal segments, in 

 profile, the lower portion showing one of the 

 angulate lobes of the eighth ventral segment ; 

 25a, eighth ventral segment. 



