54 Crust. 
X. Crustacea. 
[1907] 
Platylhelphusa re-diagn. syn. p. 266, 
key to spp. p. 268, affinities p. 274 ; 
P. armata chars, occ. syn. p. 268 fig. ; 
P. conculcata sp. n. Lake Tanganyika 
p. 273 figs. : P. maculata chars, occ. 
syn. p. 271 figs. Cunnington London 
Proc. Zool. Soc. 1907. 
Plesionika vide Pandalus. 
Polybius henslowi occ. etc. Sinel 
Guernsey Trans. Soc. Nat. Sci. 1906 
p. 215. 
Polycheles eryoniformis sp. n. [nom. 
nud.] W. North Atlantic Bouvier 
Monaco Bull. Inst. Ocean. No. 93 p. 62. 
— P. phosphorus occ. Lloyd Rec. Ind. 
Mus. 1 pp. 257-261. 
Polycremnus p. 48 ; P. ochtodes comp, 
p. 49 ; P. vcrrucifer p. 49 fig. Stimpson 
Washington Smithson. Inst. Misc. Col- 
lect. 49. 
Polyonyx p. 194 ; P. sinensis p. 194 
fig. Stimpson t.c. 
Porcellana p. 187; P. armata comp, 
p. 191 ; P. dehaani comp. p. 192 ; P. 
dispar p. 190 fig. ; P. latifrons p. 190 
fig. Stimpson t.c. — P. longicornis habits 
etc. Galloway & Fleure London Rep. 
Brit. Ass. 6 pp. 608-610; habits Fleure 
Guernsey Trans. Soc. Nat. Sci. 1906 
pp. 177-178 ; occ. etc. Zimmermann Zs. 
Natw. 16 pp. 293-321 ; occ. Rankin 
Irish Nat. 16 p. 58, Sinel Guernsey 
Trans. Soc. Nat. Sci. 1906 p. 216.— P. 
ornata Stimpson Washington Smithson. 
Inst. Misc. Collect. 49 p. 188. — P. 
platychele habits etc. Galloway & 
Fleure London Rep. Brit. Ass. 1906 
pp. 608-610 ; habits Fleure Guernsey 
Trans. Soc. Nat. Sci. 1906 pp. 177-178 ; 
occ. etc. Zimmermann Zs. Natw. 16 
pp. 293-321 ; occ. Rankin Irish Nat. 16 
p, 58 ; oeo, Sinel Guernsey Trans, Soo, 
Nat. Sci. 1908 p. 216. — P. ptilcfcra 
p. 192 ; P. serratifrons p. 189 fig. ; 
P. streptoeheles p. 191 fig. Stimpson 
Washington Smithson. Inst. Misc. Col- 
lect. 49. 
Porcellanella p. 192 : P. picta p. 193 
fig. Stimpson t.c. 
Portumnus variegatus occ. etc. Sinel 
Guernsey Trans. Soc. Nat. Sci. 1906 
p. 214. 
Portunus (vide etiam Amphitrite, 
Lupa) ; presence of urea Sanzo Biol. 
Centralbl. 27 pp. 479-491. — P. arcuatus 
occ. Rankin Irish Nat. 16 p. 58, Roule 
Paris Bui. soc. zool. 32 p. 42, Sinei. 
Guernsey Trans. Soc. Nat. Sci. 190& 
p. 214. — P. eorrugatus habits, autotomy 
and regeneration chelae Przibram Arch. 
EntwMech. 25 pp. 266-343 ; occ. Sinel. 
Guernsey Trans. Soc. Nat. Sci. 190S 
p. 214. — P. depurator Johnstone Liver- 
pool Proc. Biol. Soc. 21 pp. 316-327 ; 
habits autotomy and regeneration chelae 
Przibram Arch. EntwMech. 25 pp. 266- 
343 ; Gregarine parasite (Aggregates/ 
eberthi ) Moroff Zool. Anz. 31 pp. 72— 
78 ; occ. etc. Zimmermann Zs. Natw. 
16 pp. 293-321 ; occ. Rankin Irish 
Nat. 16 p. 58 Roule Paris Bui. soc. 
zool. 32 p. 42, Sinel Guernsey 
Trans. Soc. Nat. Sci. 1906 p. 214 — 
P. holsatus occ. Rankin Irish Nat. 16 p. 
58, Sinel Guernsey Trans. Soc. Nat. Sci. 
1906 p. 214. — P. lohgipes occ. Sinel t.c. 
p. 215. — P. marmoreus autotomy Pieron 
C. R. soc. biol. 63 pp. 517-519 occ. etc., 
distinct from holsatus Sinel Guernsey 
Trans. Soc. Nat. Sci. 1906 p. 214.— P. 
plicatus autotomy Pieron C. R. soc. biol. 
63 pp. 517-519. — P. puber digestive 
secretion Giaja C. R. soc. biol. 63 pp\. 
508-509 ; habits etc. Czepa Bl. Aquarien- 
kunde 18 pp. 503-508 ; occ. fishery 
Guerin-Ganivet Monaco Bull. Inst. 
Ocean. No. 105 ; occ. Rankin Irish Nat. 
16 p. 58, Sinel Guernsey Trans. Soc. 
Sci. Nat. 1906 p. 214. — P. pusillus occ. 
Sinel tc. p. 215. — P. ( Aehelous ) affinis 
occ. p. 71 ; P. (A ) granulatus occ. p. 60 
Rathbun Cambridge Mem. Mus. Comp. 
Zool. Harvard Col J. 35. — P. [LiocareinusJ 
strigilis Stimpson Washington Smithson. 
Inst. Misc. Collect. 49 p. 74 fig. 
Potamobius subgen. n. vide Austro- 
potamobius. — P. pallipes occ. Carr 
Nottingham Trans. Nat. Soc. 51 p. 61. 
"\Potamobius (contd.) — P. aider ophilus 
sp, u, [nom, nud,] aft. Uptodactylust 
“ Kinnnertschen Slufe ” S. Russia 
Andrussow Ann. geol. Miner. 9 p. 113. 
Potamocarcinus armatus [P. nicar- 
aguensis~\ Stimpson Washington Smith- 
son. Inst. Misc. Collect. 49 p. 112. 
Potamon (vide etiam Geothelphusa , 
Parathelphusa , Thelphusa) ; subgen. n. 
vide Parapotamon . — P. ( Parapotamon ) 
spinescens China (Yunnan-Fu Lake) pp. 
441, 454; P. (Parathelphusa) endymion, 
lanzi chars, occ. etc. pp. 442 etc. fig. Man 
London Trans. Linn. Soc. Zool. 9 ; P. 
(P.) niloticus occ. p. 274 fig. ; P. (Pota- 
monaules) ambiguus comp. p. 265 ; P 
