MALACOSTRACA. 
Crust. 21 
Petalomera (classed by Alcock as a subg. of Dromia), defined, p. 147, 
granidata, p. 147, var. indica, nov., off Ceylon and Andaman Is., 
p. 148; Alcock, J. Asiat. Soc. Bengal lxviii. 
Petrolistkes , g. defined, elongatus, Australia, p. 189, pi. xxi, fig. 8, novce 
zealandice , Cook Strait, p. 190, pi. xxi, fig. 9; Thomson, Tr. N. Zealand 
Inst. xxxi. 
P/tysachceus , g. defined, p. 39, ctenurus , Andaman Sea, p. 40, tonsor, 
Andaman Sea, p. 41; Alcock, Deep Sea Brachyura coll, by Inves¬ 
tigator. 
Pilumnoplax , g. defined and distinguished from Carcinoplax , sinclairi, oft' 
Travancore Coast, p. 74, pi. iii, fig. 1; Alcock, t. c. 
P. sinclairi , Travancore Coast, $ described, p. 11; Alcock & Anderson, 
Ann. Nat. Hist, (vii) iii, n. sp. 
Pinnoteres abyssicola , from a sp. of Lima off’ Travancore Coast, $ described, 
p. 14; Alcock & Anderson, t. c. 
P. abyssicola , off Travancore Coast, p. 81; Alcock, Deep Sea Brachyura 
coll, by Investigator. 
Platymaia , g. defined, p. 45, wyville-thomsoni , Andaman Sea, p. 46; 
Alcock, Deep Sea Brachyura coll, by Investigator. 
Platypilumnus, g. defined, p. 62, gracilipes , Andaman Sea, p. 63; Alcock, 
t. c. 
PlesioniJca aflinis , Indian Seas, p. 285; Alcock & Anderson, Ann. Nat. 
Hist, (vii) iii, n. sp. 
Potamon ( Parathelphusa) tridentatum , Borneo, described, p. 67, pi. v, 
fig. 3; de Man, Notes Leyden Mus. xxi. 
P. mahakkamcnse , Borneo, p. 92, pi. viii, fig. 8, consobrinum , Borneo, p. 99, 
pis. vi, ix & x, fig. 10, melanippe , Borneo, p. 105, pi. ix, fig. 11; de 
Man, t. c. n. spp. 
Pontocaris media, Andaman Sea, p. 282; Alcock & Anderson, Ann. Nat. 
Hist, (vii) iii, n. sp. 
Pseudodromia , g. defined and key to Indian spp., p. 149, integrifrons , 
described, p. 150; Alcock, J. Asiat. Soc. Bengal lxviii. P. quadri- 
cornis , possibly identical with Homalodromia coppingeri, described, 
p. 149, off Ceylon; Alcock, t. c. n. sp. ? 
Psopheticus, g. defined, p. 72, stridulans , Andaman Sea, p. 73; Alcock, 
Deep Sea Brachyura coll, by Investigator. 
Ptenoplax , g. defined, p. 78, notopus , Bay of Bengal, p. 79; Alcock, t. c. 
Ptychogaster hendersoni , Travancore Coast, p. 23, investigatoris, Andaman 
Sea, p. 24, described ; Alcock & Anderson, Ann. Nat. Hist, (vii) iii, 
n. spp. 
Pylocheles miersi , Andaman Sea, described, previously noted as P. agassizii, 
p. 14; Alcock & Anderson, t. c. n. sp. 
Randallia, g. defined, p. 25, lamellidentata , Andaman Sea, p. 26, pustulosa, 
Andaman Sea, p. 27; Alcock, Deep Sea Brachyura coll, by Investi¬ 
gator. 
Richardina ; spongicola, Andaman Sea, p. 291; Alcock & Anderson, Ann. 
Nat. Hist, (vii) iii, n. sp. 
Scylla, g. defined, serrata , India, synonymy and description, p. 27; 
Alcock, J. Asiat. Soc. Bengal lxviii. 
Scyramathia, g. defined, p. 51, pulchra , Andaman Sea, p. 52, rivers- 
andersoni, off Malabar Coast, p. 53, beauchampi , Bay of Bengal, p. 54, 
globidifera , Andaman Sea, p. 55; Alcock, Deep Sea Brachyura coll, 
by Investigator. 
Sesarma africana , measurements, etc., p. 10, biittikoferi , described and 
figured, p. 11, pi. iii, figg. 1-4; Aurivillius, Bib. Svenska Ak. xxiv, 
iv. 
S. amphinome , Borneo, p. 133, pi. xii, fig. 16, described; de Man, t. c. 
n. sp. 
