﻿270 
  NEW 
  YORK 
  STATE 
  MUSEUM 
  

  

  mantle 
  — 
  fleshy 
  membrane 
  infolding 
  the 
  soft 
  parts 
  of 
  mollusks 
  and 
  brachio- 
  

  

  pods 
  and 
  building 
  the 
  shell 
  

   medullary 
  rays 
  — 
  the 
  " 
  silver 
  grain 
  " 
  or 
  radiating 
  vertical 
  bands 
  or 
  plates 
  of 
  

  

  parenchyma 
  in 
  the 
  stems 
  of 
  exogenous 
  plants 
  

   medusa 
  — 
  a 
  jelly 
  fish 
  

  

  membranaceous 
  — 
  pertaining 
  to 
  a 
  membrane 
  

   mesial 
  — 
  central 
  

  

  mesogloea 
  — 
  central, 
  non-cellular 
  layer 
  in 
  the 
  body 
  of 
  coelenterates 
  

   meso-pores 
  — 
  irregular 
  meshes 
  or 
  cysts 
  on 
  the 
  intercellular 
  spaces 
  of 
  certain 
  

  

  bryozoa; 
  

   rriesotheca 
  — 
  median 
  wall 
  separating 
  opposed 
  cells 
  in 
  certain 
  bryozoan 
  

  

  fronds 
  

   metastonia 
  — 
  underlip 
  of 
  Crustacea, 
  composed 
  of 
  small 
  pieces 
  immediately 
  

  

  below 
  and 
  behind 
  the 
  mouth 
  

   microcorallites 
  — 
  smaller 
  corallites 
  of 
  a 
  compound 
  C'orallum 
  

   mold 
  — 
  any 
  impression 
  of 
  a 
  fossil, 
  in 
  rock 
  matrix, 
  external 
  or 
  internal 
  

   moniliform 
  — 
  resembling 
  a 
  necklace 
  or 
  string 
  of 
  beads 
  

   monocyclic 
  — 
  of 
  a 
  single 
  cycle 
  

   monticuliporoids 
  — 
  corals 
  belonging 
  to 
  the 
  order 
  Monticuliporidae 
  having 
  

  

  many 
  points 
  of 
  resemblance 
  with 
  the 
  bryozoa 
  

   monticules 
  — 
  elevated 
  areas 
  on 
  the 
  surface 
  of 
  certain 
  coral 
  and 
  bryozoan 
  

  

  colonies, 
  commonly 
  carrying 
  larger 
  apertures 
  

   mucronate 
  — 
  produced 
  into 
  a 
  long 
  pointed 
  extension 
  

   mural 
  pores 
  — 
  pores 
  in 
  the 
  walls 
  of 
  the 
  corallites 
  of 
  the 
  Favositidae 
  

   muscle 
  scar 
  — 
  scar 
  in 
  a 
  shell 
  marking 
  the 
  former 
  attachment 
  of 
  a 
  muscle 
  

  

  nacreous 
  — 
  pearly; 
  the 
  nacreous 
  layer 
  of 
  shells 
  is 
  the 
  inner 
  smooth 
  pearly 
  

  

  layer 
  

   nariform 
  — 
  shaped 
  like 
  a 
  nostril 
  

   nasute 
  — 
  projecting, 
  nose-like 
  

   nettlecell 
  — 
  one 
  of 
  the 
  nematocysts 
  or 
  stinging 
  cells 
  found 
  covering 
  the 
  

  

  tentacles 
  and 
  other 
  body 
  parts 
  of 
  most 
  Coelenterata 
  

   node 
  — 
  knob; 
  usually 
  considered 
  as 
  ornamental 
  

   nodose 
  — 
  bearing 
  nodes 
  or 
  tubercles 
  

   nodulose 
  — 
  knotty, 
  or 
  having 
  nodes 
  

  

  obconical 
  — 
  inversely 
  conical 
  

  

  oblate— 
  flattened 
  at 
  the 
  poles 
  

  

  obovate 
  — 
  inversely 
  ovate 
  or 
  egg-shaped 
  

  

  obsequent 
  stream 
  — 
  a 
  stream 
  flowing 
  down 
  the 
  inface 
  of 
  a 
  cuesta, 
  or 
  

  

  toward 
  the 
  old-land, 
  tributary 
  to 
  the 
  subsequent 
  stream 
  which 
  in 
  turn 
  

  

  flows 
  into 
  the 
  consequent 
  

   occipital 
  — 
  applied 
  to 
  the 
  posterior 
  part 
  of 
  the 
  cephalon 
  of 
  a 
  trilobite 
  

   occipital 
  furrow 
  — 
  transverse 
  groove 
  on 
  the 
  cephalon 
  of 
  trilobites, 
  which 
  

  

  separates 
  the 
  last 
  or 
  occipital 
  ring 
  from 
  the 
  rest 
  of 
  the 
  cephalon 
  

   occipital 
  ring 
  — 
  posterior 
  division 
  of 
  the 
  glabella 
  of 
  a 
  trilobite 
  cephalon 
  

   operculiform 
  — 
  resembling 
  an 
  operculum 
  

   operculum 
  — 
  lid 
  or 
  cover 
  

  

  