﻿318 
  Transactions, 
  — 
  Zoology, 
  

  

  emarginate 
  inferiorly 
  ; 
  set® 
  minute 
  in 
  single 
  rows 
  ; 
  colour 
  recldisli-brown, 
  

   finely 
  longitudinally 
  striated 
  with 
  lighter 
  ; 
  length 
  two 
  inches. 
  

  

  Order 
  Ch^topoda. 
  

   Body 
  not 
  presenting 
  distinct 
  regions 
  ; 
  branchias 
  dorsal 
  ; 
  sexes 
  distinct 
  ; 
  

   limbs 
  tubular, 
  setigerous. 
  Marine. 
  

  

  Family 
  Aphroditid^. 
  

   Segments 
  imequal, 
  with 
  dorsal, 
  shield-like 
  elytra 
  ; 
  head 
  lobes 
  developed, 
  

   with 
  a 
  single 
  tentacle 
  and 
  lateral 
  antennae 
  and 
  palpi 
  ; 
  eyes 
  sessile 
  or 
  

   stalked 
  ; 
  gills 
  small, 
  simple 
  ; 
  epipharynx 
  generally 
  with 
  two 
  upper 
  and 
  two 
  

   lower 
  teeth 
  and 
  jaws. 
  

  

  Genus 
  Aphrodita, 
  Linnaeus. 
  

   Head 
  with 
  three 
  antennte, 
  two 
  eyes, 
  and 
  a 
  median 
  caruncle 
  or 
  tubercle; 
  

   buccal 
  segment 
  rudimentary 
  without 
  appendix 
  ; 
  all 
  the 
  feet 
  more 
  or 
  less 
  

   covered 
  with 
  hairs, 
  no 
  barbed 
  bristles 
  ; 
  elytra 
  12-15 
  pairs 
  alternating 
  with 
  

   the 
  superior 
  cirri; 
  proboscis 
  unarmed, 
  or 
  with 
  rudimentary 
  cartilaginous 
  

   teeth. 
  

  

  A. 
  TALPA, 
  Quatrefages, 
  Hist. 
  Nat. 
  des 
  Anneles, 
  I., 
  ja. 
  196, 
  pi. 
  6, 
  /. 
  2, 
  

  

  Median 
  tentacle 
  very 
  short, 
  laterals 
  long 
  ; 
  body 
  of 
  32 
  segments 
  ; 
  feet 
  

   enveloped 
  in 
  hairs 
  ; 
  elytra 
  30, 
  rounded, 
  small 
  ; 
  the 
  whole 
  back 
  covered 
  

   with 
  dirty, 
  brown 
  hairs, 
  

  

  A. 
  SQUAMOSA, 
  Quatrefages, 
  I.e. 
  I., 
  2^. 
  201. 
  

  

  Head 
  small, 
  distinct, 
  hidden 
  by 
  the 
  prominent 
  elytra 
  ; 
  median 
  antenna 
  

   short, 
  thick, 
  truncated 
  (?) 
  ; 
  laterals 
  twice 
  as 
  long, 
  slender 
  ; 
  tentacles 
  short 
  ; 
  

   body 
  of 
  27 
  segments, 
  moderate, 
  elongated 
  ; 
  feet 
  apparently 
  one-oared, 
  

   prominent; 
  elytra 
  24, 
  large, 
  rugose, 
  robust, 
  covering 
  the 
  whole 
  body; 
  

   superior 
  cirri 
  longish, 
  on 
  a 
  thick, 
  compressed, 
  swelling; 
  hairs 
  short, 
  not 
  

   covering 
  the 
  elytra 
  ; 
  branchiae 
  more 
  or 
  less 
  conical, 
  and 
  separated 
  tubercles. 
  

  

  Genus 
  Polynoe, 
  Savigny. 
  

   Head 
  distinct 
  with 
  3 
  antennge 
  and 
  4 
  eyes 
  ; 
  buccal 
  ring 
  indicated 
  by 
  the 
  

   presence 
  of 
  two 
  pairs 
  of 
  tentacles, 
  the 
  superior 
  of 
  which 
  are 
  bifurcate 
  ; 
  the 
  

   inferior 
  longer, 
  thicker, 
  and 
  simple. 
  Feet 
  more 
  or 
  less 
  evidently 
  biramous 
  ; 
  

   the 
  setigerous 
  tubercles 
  on 
  a 
  common 
  peduncle 
  ; 
  elytra 
  alternating 
  with 
  

   the 
  superior 
  cirri 
  of 
  the 
  feet, 
  covering 
  the 
  whole 
  length 
  of 
  the 
  back 
  ; 
  pro- 
  

   boscis 
  with 
  two 
  pairs 
  of 
  horny 
  jaws. 
  

  

  P. 
  AUCKLANDiCA, 
  Schmarda, 
  Keue 
  Wirbelloser 
  TJdere, 
  p. 
  158. 
  

  

  Body 
  long, 
  greyish-yellow 
  ; 
  segments 
  60 
  ; 
  tentacles 
  7 
  ; 
  elytra 
  oblique, 
  

   oval. 
  

  

  Auckland. 
  

  

  P. 
  MACEOLEPiDATA, 
  ScJimarda, 
  I.e., 
  p. 
  155, 
  pi. 
  36, 
  /. 
  306. 
  

  

  Body 
  flat, 
  brown 
  ; 
  elytra 
  15 
  pairs, 
  large, 
  oval, 
  or 
  suboval, 
  greyish- 
  

  

  