﻿c. 
  BOVALLIUS, 
  lANTHE. 
  

  

  fused 
  to- 
  

  

  gether 
  

  

  into 
  1 
  or 
  

  

  2 
  joints. 
  

  

  Posterior 
  

  

  leffs 
  

  

  ASEL- 
  

  

  LID^. 
  

  

  Pleon 
  and 
  

   urus. 
  

  

  elon- 
  

   gated. 
  

  

  1 
  subf. 
  <: 
  

  

  Munni- 
  

   nse. 
  

  

  Henopomus. 
  

   Guérin. 
  

  

  Munna. 
  Kr. 
  

  

  not 
  elon- 
  

  

  gated.2d 
  

  

  subf. 
  

  

  Asel- 
  

  

  lin». 
  

  

  DactijW 
  

  

  ' 
  biungui-^rudimental 
  Jsera. 
  Leach. 
  

  

  culate. 
  

  

  of 
  wo- 
  

   focla 
  

  

  uniun- 
  fwell 
  developed. 
  sty- 
  

  

  guicu- 
  

   late. 
  Last 
  

  

  \ 
  

  

  pair 
  of 
  

   iirojyoda 
  [rudimen 
  

  

  liform 
  Asellus. 
  

  

  Geoffr. 
  

  

  tal 
  Leptapsidia. 
  

  

  Sp. 
  Bate. 
  

  

  forming 
  6 
  joints. 
  3 
  siibf. 
  Limnorin^.. 
  Limnoria. 
  

  

  Leach. 
  

  

  lanthe. 
  nov. 
  gen. 
  

   Derivatio 
  : 
  lävO^r], 
  tlie 
  motlier 
  of 
  Janira 
  *. 
  

  

  Diagn. 
  gen. 
  Corpus 
  convexum, 
  ovato-elongatum. 
  

  

  Cejyhalon 
  convexum, 
  rostrum 
  gerens 
  longum 
  acuminatum. 
  

  

  Ocidi 
  min 
  uti, 
  remoti. 
  

  

  Äntennce 
  internae 
  conspicuaj. 
  

  

  Mandihidoe 
  validae, 
  palpo 
  triarticulato. 
  

  

  Dactyli 
  biunguiculati, 
  ungue 
  externo 
  majore. 
  

  

  Pedes 
  primi 
  paris 
  subcheliformes, 
  ceteri 
  sub^quales. 
  

  

  Segmenta 
  plei 
  urique 
  in 
  unum 
  coalita. 
  

  

  Uropoda 
  ultima 
  styliformia, 
  laminis 
  binis 
  angustissimis. 
  

  

  lanthe 
  is 
  a 
  genus 
  well 
  distinguished 
  from 
  its 
  allies 
  : 
  

   from 
  Asellus 
  by 
  the 
  biunguiculate 
  legs 
  and 
  the 
  form 
  of 
  

   tlie 
  pleopoda; 
  from 
  Jaera 
  by 
  the 
  well 
  developed, 
  styliform 
  

   last 
  pair 
  of 
  uropoda 
  and 
  the 
  multiarticulate 
  flagellum 
  of 
  the 
  

   inner 
  antenns. 
  From 
  the 
  Janira, 
  its 
  closest 
  ally, 
  it 
  iö 
  to 
  

   be 
  distinguished 
  by 
  the 
  great 
  convexity 
  of 
  the 
  body, 
  by 
  the 
  

   small 
  aud 
  distant 
  eyes, 
  by 
  the 
  want 
  of 
  an 
  articulated 
  scale 
  

   at 
  the 
  peduucles 
  of 
  the 
  inner 
  antennae 
  and 
  lastly 
  by 
  the 
  

   fully 
  developed 
  palpiform 
  appendage 
  of 
  the 
  mandibles 
  and 
  

   by 
  the 
  three-articulated 
  maxillar 
  feet. 
  The 
  most 
  remarkable 
  

   * 
  See 
  Ovidii 
  Metamorphoses 
  IX. 
  714. 
  

  

  