In the sandy facies of the SW the isolated carapaces of many species of small crab occur frequently.  Elsewhere in the Chalk Group crabs are extremely scarce and rank amongst the rarest of Chalk fossils.  Small, isolated fingers may be found with tolerable frequency in the Grey Chalk and are probably assignable to the Brachyura.

A

B

1).  Isolated carapaces of Necrocarcinus sp.  (A) Small carapace from the sandy Cenomanian facies of Wilmington, Devon, Randell Collection, RR 0647 (x4).  (B) Large carapace from the Grey Chalk, Glynde, Sussex, from the Willett Collection, Booth Museum, BMB 007783, by kind permission of John Cooper (x1.5).

A

B

2).  Isolated carapaces with relatively subtle ornament; (A) Graptocarcinus cf. texanus (?), x3.7, Friar's Bay, Peacehaven, Sussex, Newhaven Chalk Formation, Old Nore Beds, Randell Collection, RR1868; (B) Notopocorystes (Cretacoranina) cf. schloenbachia, x3.0, Bridgewick Pit, near Lewes, Turonian, Booth Museum, BMB 018478, by kind permission of John Cooper.

A

B

3).  Isolated right  cheliped, possibly Diaulax oweni.  (A), (B) different views (both x3, near Cow Gap, Eastbourne (L. R. Strevens collection), Grey Chalk).     

A

B

  4).  (A), (B) different views of the above specimen (both x3).

5).  Chelipeds; (A) Necrocarcinus sp. (?), a pair of claws, one missing its fingers (x3.1, Biss Bottom, Upton, Scudmore, Wiltshire, Grey Chalk, Fred Clouter Collection (ex. Tony Lee Collection), image courtesy of Fred Clouter); (B) Notopocorystes sp.?, isolated right cheliped (x6, Grey Chalk, Southerham, Lewes, Sussex, Randell Collection).

6).  This solitary right cheliped almost certainly belongs to an undescribed genus and species, perhaps some form of hermit crab (x3.5, Friar's Bay, Peacehaven, Sussex, Newhaven Chalk Formation, Old Nore Beds, Randell Collection, RR1675).

A

B

7).  Details of the above cheliped (Fig. 6) (x8);  (A) outer surface; (B) inner surface of pincer.

ABC

8).  These isolated dactyls are probably assignable to the Brachyura.  (A) x8, Grey Chalk, Culver Cliff, Isle of Wight, (B) x7, Grey Chalk, near Cow Gap, Eastbourne, (C) x15, Grey Chalk, Southerham, Lewes.  Randell Collection (A) RR1302, (B) RR0217, (C) RR0771.

A	B
	C

9).  Isolated dactyl (Grey Chalk, near Cow Gap, Eastbourne); (A) Detail showing the surface ornament (x14); (B), (C) Different views (both x5).  Randell Collection, RR0661.