274 
DE.  WHEELTON  HIND  ON  THE  AFFINITIES  OF  [May  1 893, 
EXPLANATION  OF  PLATES  VII.,  VIII.,  IX.,  &  X. 
Plate  VII. 
Figs.  1,  1  a ,  1  b.  Anthracoptera  modiolaris,  showing  striated  hinge-plate  and 
pit- like  muscle-scars.  Ten-foot  Seam,  roof.  Bucknall,  North  Staffs. 
2,  2  a.  Anthracoptera  carincita,  showing  the  striated  hinge-plate  and  muscle- 
scars. 
3.  Cast  of  interior  of  Anthracoptera  modiolaris,  showing  the  muscle- 
scars  and  pallial  line.  Hard  Mine,  Adderley  Green,  North 
Staffordshire. 
4.  Anthracoptera  modiolaris ,  with  short  form  of  hinge-line.  Hard 
Mine,  Adderley  Green. 
5,  6.  Anthracoptera  modiolaris.  Hard  Mine,  Adderley  Green. 
7.  - triangularis .  Hard  Mine,  Adderley  Green. 
8.  - ,  intermediate  form  between  A.  triangularis  and  A.  cari- 
nata.  Hard  Mine,  Adderley  Green. 
9.  9  a.  Anthracoptera  triangularis,  in  profile.  Hard  Mine,  Adderley 
Green. 
10,  10  a.  Anthracoptera  carinata.  Hard  Mine,  Adderley  Green. 
11,  - ,  form  approaching  A.  quadrata.  Hard  Mine,  Adderley 
Green. 
12,  12  a.  Anthracoptera  carinata.  Hard  Mine,  Adderley  Green. 
13,  13  a.  - tuniida.  Hard  Mine,  Adderley  Green. 
14,  - - ,  mimicking  Anthracomya  dolabrata.  Collection  of 
Mr.  J.  Ward,  F.G.S. 
15,  15  a.  Anthracoptera  elongata.  Knowles  Ironstone,  Fenton  Park,  North 
Staffordshire. 
10.  Anthracoptera  elongata,  young  of.  Knowles  Ironstone,  Fenton 
Park. 
17.  Anthracoptera  elongata,  form  approaching  A.  carinata.  Knowles 
Ironstone,  Fenton  Park. 
Plate  VIII. 
f'  Fig.  1.  ■  Anthracoptera  quadrata.  Hard  Mine,  Adderley  Green,  North  Staffs. 
2. - ,  flattened  form.  Hard  Mine,  Adderley  Green. 
,  3. - .  Hard  Mine,  Adderley  Green. 
4.  - -,  compressed  specimen.  ‘  Stinking  coal-shale,’  Froghall. 
5.  Anthracomya  Adamsii.  Little  Mine  Ironstone,  Great  Fenton,  North 
Staffordshire. 
ha.  Anthracomya  Adamsii,  view  of  hinge  and  umbones.  Little  Mine 
Ironstone,  Great  Fenton. 
6.  Anthracomya  Adamsii,  showing  straight,  edentulous  hinge-line. 
Great  Fenton. 
’  /  1.  Anthracomya  Adamsii,  specimen  showing  colour-bands.  Great  Fenton. 
8.  - ,  more  transverse  form.  Great  Fenton. 
9,  9  a.  - dolabrata,  approaching  Adamsii.  Little  Mine,  Great  Fenton . 
>-  10,  10  a. - .  The  second  figure  shows  the  tumidity.  Little  Mine, 
Great  Fenton. 
Plate  IX. 
Figs.  1,  1  a. 
2. 
3. 
4,5. 
6.  6  a. 
7. 
8. 
9. 
10. 
Anthracomya  dolabrata.  Type-specimen  from  the  cabinet  of  Prof. 
Prestwich,  F.R.S.  See  Sowerby’s  figure  in  ‘Geology  of  Coal- 
brookdale.’ 
Anthracomya  Adamsii,  var.  expansa.  Great  Fenton,  North  Staffs. 
- .  Pitts  Hill.  In  the  collection  of  Mr.  F.  Barke. 
- dolabrata.  Collection  ©f  Mr.  J.  Ward,  F.G.S.  Longton, 
North  Staffordshire. 
- Phillipsii .  Knowles  Ironstone,  Fenton,  North  Staffordshire. 
—  - ,  specimen  differing  slightly  in  form. 
—  - ,  crushed  specimen  from  the  Blackband  Ironstone. 
- — —  Wardi.  Mr.  J.  Ward’s  specimen. 
- .  From  the  collection  of  Sir  U.  K.  Shuttleworth,  from 
Burnley. 
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