﻿342 
  Mr. 
  R. 
  I. 
  Pocock 
  on 
  some 
  

  

  keels 
  smaller 
  than 
  upon 
  the 
  sides 
  of 
  the 
  cephalothorax 
  ; 
  ante- 
  

   rior 
  keels 
  granular, 
  generally 
  falling 
  short 
  of 
  the 
  anterior 
  

   margin, 
  rarely 
  attaining 
  it 
  ; 
  anterior 
  margin 
  bearing 
  a 
  series 
  

   of 
  granules 
  and 
  a 
  few 
  scattered 
  hairs. 
  Posterior 
  keels 
  con- 
  

   vergina; 
  in 
  front 
  and 
  meeting 
  the 
  hinder 
  extremities 
  of 
  the 
  

   internal 
  median 
  keels, 
  the 
  two 
  constituting 
  a 
  sinuous 
  series 
  ot 
  

   granules 
  ; 
  more 
  rarely 
  the 
  extremities 
  of 
  these 
  two 
  keels 
  fail 
  

   to 
  meet 
  ; 
  external 
  median 
  keel 
  sometimes 
  connected 
  with 
  the 
  

   posterior 
  keel 
  by 
  a 
  more 
  or 
  less 
  definite 
  series 
  of 
  granules, 
  

   but 
  more 
  commonly 
  the 
  granules 
  in 
  this 
  part 
  are 
  neither 
  larger 
  

   nor 
  more 
  definitely 
  arranged 
  than 
  upon 
  the 
  rest 
  of 
  the 
  cepha- 
  

   lothorax 
  ; 
  median 
  eyes 
  considerably 
  in 
  front 
  of 
  the 
  middle 
  of 
  

   the 
  cephalothorax. 
  

  

  Tergites 
  sparsely 
  but 
  somewhat 
  coarsely 
  granular 
  at 
  the 
  

   sides, 
  smoother, 
  but 
  feebly 
  granular 
  above, 
  each 
  marked 
  with 
  

   the 
  three 
  ordinary 
  keels, 
  which 
  are 
  much 
  abbreviated 
  in 
  

   front. 
  

  

  Tail 
  large 
  ; 
  first 
  four 
  segments 
  nearly 
  parallel-sided, 
  the 
  

   fifth 
  much 
  narrowed 
  at 
  its 
  hinder 
  end 
  ; 
  the 
  first 
  four 
  deeply 
  

   excavated 
  above 
  ; 
  the 
  superior 
  keels 
  very 
  conspicuous, 
  being 
  

   rather 
  denticulate 
  than 
  granulate; 
  the 
  inferior 
  keels, 
  nearly 
  

   smooth 
  on 
  the 
  first, 
  become 
  gradually 
  more 
  coarsely 
  granulate 
  

   from 
  before 
  backwards 
  ; 
  the 
  median 
  lateral 
  keel, 
  complete 
  on 
  

   the 
  first 
  segment, 
  present 
  on 
  the 
  hinder 
  half 
  of 
  the 
  second, 
  

   represented 
  by 
  two 
  or 
  three 
  granules 
  in 
  the 
  third, 
  absent 
  on 
  the 
  

   fourth 
  ; 
  the 
  intercarinal 
  spaces 
  are 
  almost 
  wholly 
  smooth 
  ; 
  iifth 
  

   segment 
  above 
  with 
  a 
  very 
  shallow 
  median 
  excavation 
  in 
  front, 
  

   but 
  depressed 
  behind, 
  scarcely 
  at 
  all 
  constricted 
  at 
  the 
  sides, 
  the 
  

   posterior 
  extremity 
  of 
  the 
  side 
  denticulate 
  and 
  continuous, 
  or 
  

   nearly 
  so, 
  with 
  the 
  denticles 
  of 
  the 
  inferior 
  lateral 
  keels; 
  

   these 
  denticles, 
  like 
  those 
  of 
  the 
  median 
  keel, 
  almost 
  alike 
  

   throughout 
  the 
  extent 
  of 
  the 
  keel 
  ; 
  in 
  some 
  cases, 
  however, 
  

   they 
  vary 
  slightly 
  in 
  size; 
  the 
  median 
  keel 
  breaks 
  up 
  behind 
  

   into 
  a 
  few 
  lateral 
  granules 
  ; 
  inferior 
  intercarinal 
  spaces 
  fur- 
  

   nished 
  with 
  a 
  few 
  more 
  or 
  less 
  serially 
  arranged 
  large 
  granules 
  

   or 
  tubercles 
  ; 
  all 
  the 
  segments 
  of 
  tne 
  tail 
  are 
  more 
  or 
  less 
  

   hairy 
  above 
  and 
  below, 
  the 
  hairs 
  being 
  long, 
  widely 
  separated, 
  

   but 
  arranged 
  in 
  definite 
  longitudinal 
  series. 
  

  

  Vesicle 
  feebly 
  granular 
  beneath, 
  and 
  hairy, 
  a 
  little 
  wider 
  

   than 
  the 
  posterior 
  end 
  of 
  the 
  fifth 
  segment 
  of 
  the 
  tail, 
  but 
  

   narrower 
  than 
  its 
  anterior 
  end 
  ; 
  aculeus 
  shorter 
  than 
  the 
  

   vesicle, 
  both 
  together 
  shorter 
  than 
  the 
  fifth 
  caudal 
  segment. 
  

  

  Talp 
  beset 
  with 
  longish 
  separated 
  hairs 
  ; 
  humerus 
  and 
  

   brachmm 
  with 
  the 
  ordinary 
  granular 
  keels 
  ; 
  hand 
  obscurely 
  

   costate, 
  as 
  in 
  B. 
  eurojjccus, 
  considerably 
  wider 
  than 
  the 
  bra- 
  

   chium 
  in 
  male, 
  as 
  wide 
  or 
  wider 
  in 
  female 
  ; 
  dactyli 
  short, 
  

  

  