﻿40 
  PEOCEEDIXGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM. 
  

  

  11. 
  SINALOA, 
  new 
  genus. 
  

   (Geographical 
  uame.) 
  

  

  Body 
  sliaped 
  much 
  as 
  in 
  Paraidemona, 
  male 
  and 
  female, 
  briefly 
  

   pilose. 
  Head 
  a 
  little 
  prominent, 
  the 
  vertex 
  well 
  arched 
  and 
  the 
  fas- 
  

   tigium 
  rather 
  rapidly 
  descending, 
  shallowly 
  sulcate, 
  the 
  frontal 
  costa 
  

   not 
  very 
  broad, 
  about 
  as 
  broad 
  as 
  the 
  interval 
  between 
  the 
  eyes, 
  sub- 
  

   equal, 
  percurrent, 
  snlcate; 
  face 
  but 
  little 
  retreating; 
  eyes 
  separated 
  

   by 
  a 
  tolerably 
  narrow 
  interval, 
  narrower 
  in 
  male 
  than 
  female, 
  rather 
  

   prominent 
  in 
  the 
  male, 
  considerably 
  (female) 
  or 
  very 
  much 
  (male) 
  longer 
  

   than 
  the 
  anterior 
  infraocular 
  portion 
  of 
  the 
  geuae 
  ; 
  antennae 
  moderately 
  

   stout, 
  in 
  the 
  male 
  much 
  longer 
  than 
  the 
  head 
  and 
  pronotum 
  together. 
  

   Prouotum 
  subequal 
  in 
  the 
  male, 
  but 
  with 
  slightly 
  expanding 
  front 
  

   margin 
  and 
  metazona, 
  distinctly 
  enlarging 
  posteriorly 
  in 
  the 
  female, 
  

   both 
  front 
  and 
  hind 
  margin 
  truncate, 
  the 
  latter 
  feebly 
  emarginate, 
  with 
  

   slight 
  percurrent 
  median 
  carina 
  and 
  no 
  lateral 
  carinae, 
  the 
  lateral 
  lobes 
  

   vertical 
  ; 
  prozona 
  almost 
  twice 
  as 
  long 
  as, 
  and 
  less 
  feebly 
  punctate 
  than, 
  

   the 
  metazona, 
  cut 
  in 
  the 
  middle 
  by 
  a 
  transverse 
  sulcus, 
  followed 
  behind 
  

   by 
  a 
  sinuous 
  or 
  broadly 
  W-shaped 
  sulcus, 
  both 
  tolerably 
  distinct. 
  

   Prosternal 
  spine 
  erect, 
  conical, 
  bluntly 
  i)Ointed; 
  interval 
  between 
  meso- 
  

   sterual 
  lobes 
  feebly 
  transverse 
  in 
  both 
  sexes, 
  the 
  metasternal 
  lobes 
  not 
  

   very 
  close. 
  Tegiuiua 
  brief, 
  lobiform, 
  lateral. 
  Fore 
  and 
  middle 
  femora 
  

   of 
  male 
  tuinid; 
  hind 
  femora 
  moderately 
  long 
  but 
  stout, 
  the 
  spines 
  of 
  

   the 
  outer 
  row 
  of 
  hind 
  tibiae 
  ten 
  to 
  eleven 
  in 
  number. 
  Margin 
  of 
  

   subgenital 
  i)late 
  of 
  male 
  straight 
  from 
  the 
  base, 
  which 
  is 
  in 
  no 
  way 
  

   ampliate; 
  cerci 
  compressed 
  laminate, 
  subequal, 
  slender; 
  furcula 
  con- 
  

   sisting 
  of 
  a 
  pair 
  of 
  parallel, 
  attingent, 
  slender, 
  spiue-lilie 
  processes. 
  

  

  The 
  only 
  species 
  known 
  is 
  from 
  Mexico. 
  

  

  SINALOA 
  BEHRENSII, 
  new 
  species. 
  

  

  (Plate 
  III, 
  fig. 
  7.) 
  

  

  Body 
  fusco-testaceous 
  above, 
  flavo-testaceous 
  beneath, 
  the 
  two 
  colors 
  

   separated 
  on 
  the 
  sides 
  by 
  a 
  broad 
  blackish-fuscous 
  band, 
  extending 
  

   from 
  behind 
  the 
  eyes 
  across 
  the 
  lateral 
  lobes 
  of 
  the 
  pronotum, 
  subequal 
  

   and 
  well 
  defined 
  throughout 
  but, 
  at 
  least 
  in 
  the 
  female, 
  slightly 
  enlarged 
  

   and 
  a 
  little 
  obsolescent 
  on 
  the 
  metazona, 
  continued, 
  at 
  least 
  in 
  the 
  male, 
  

   on 
  the 
  sides 
  of 
  the 
  base 
  of 
  the 
  abdomen. 
  Head 
  flavo-testaceous, 
  with 
  a 
  

   mediodorsal, 
  widening, 
  blackish 
  fuscous 
  or 
  dull 
  fuscous 
  strir)e 
  from 
  the 
  

   base 
  of 
  the 
  fastigium 
  backward, 
  sometimes 
  l)rokeu 
  ; 
  face 
  with 
  extremely 
  

   feeble 
  signs 
  of 
  delicate 
  i^uncta, 
  no 
  more 
  abundant 
  on 
  the 
  frontal 
  costa 
  

   than 
  elsewhere; 
  antennae 
  flavo 
  testaceous, 
  growing 
  infuscated 
  apically. 
  

   Pronotnm 
  with 
  the 
  metazona 
  transversely 
  and 
  snbrugosely 
  punctate, 
  

   especially 
  in 
  the 
  male 
  and 
  on 
  the 
  lateral 
  lobes, 
  simply 
  punctate 
  on 
  the 
  

   disk 
  in 
  the 
  female, 
  transversely 
  striate 
  in 
  the 
  region 
  of 
  the 
  lateral 
  

   carinae 
  on 
  the 
  prozona, 
  the 
  median 
  carina 
  sometimes 
  blackish 
  fuscous 
  

   in 
  continuation 
  of 
  the 
  stripe 
  on 
  the 
  head. 
  Tegmiua 
  fusco-testaceous, 
  

   somewhat 
  darkest 
  on 
  anterior 
  half, 
  hardly 
  so 
  long 
  as 
  the 
  i)rozona, 
  

  

  