nOMALOTA. 191 



witli inidci-plate of seventh segment of alxlomen pro- 

 duced and narrowed toward apex, apex truncate and slightly 

 cniarghiate ; a].)ex of upper-plate not emarginate. Not 

 uncommon. H. londinensis, Sharp. 



Ji b. Length not exceeding If lines. 



A J. Body rather broad. 



Head and thorax l)rownish- black ; elytra o1>Rcure pitch- 

 brown ; abdomen black ; legs red-lirown ; antennae pitch- 

 black, base lighter, joint ten about as long as broad. Male 

 witli under-plate of seventh abdominal segment much 

 produced, narrowed toward apex, wdiich is formed by the 

 junction of two gentle curves. L. If 1. Not uncommon. 



//. liygrotopora, Kr. 

 jB 1, Body rather narrow and elongate. 



a 1. Thorax al)out as long as broad ; 

 antennae rather long. 

 Eather shiny. Head and thorax black, elytra varying 

 from reddish-l)rown to pitchy ; abdomen black, apex pale ; 

 legs yellow ; antennae dark-brown, l:)ase lighter. Male with 

 under-plate of seventh abdominal segment narrow, pro- 

 jecting considerably beyond upper-plate, apex gently 

 rounded ; female wdtli upper-plate of this segment slightly 

 emarginate in middle. L. 1| 1. Common. 



H. donga tula, Gr. 

 h 7. Thorax one quarter broader than 

 long ; antennae a little more slender 

 and a little shorter than in H. donga- 

 tula. 

 Similar to H. clongatula but very variable. Second joint 

 of antennae rather longer in proportion to third, and each 

 joint somewhat more narrowed toward base. Male with 

 under-plate of seventh abdominal segment broader, sliorter 

 and more evenly rounded than in H. clongatula, and pro- 

 jecting l)ut little beyond u]3per-plate ; female with u})per- 

 plate of this segment not emarginate. L. 1| — Ih 1. 

 Common. IT. volans, Scrib. 



b b. Elytra not, or but little longer than thorax. 

 A a. Thorax not very closely punctured. 



A 1, Abdomen with segments two to four 

 finely, closely and evenly, five and six 

 more diffusely but distinctly punctured. 



