SCORPIONES. 
Arachn. 23 
Buthidce, def. and synopsis of genera, p. 19; Pocock, Arach. Scorpiones, 
Biol. Centr.-Amer. 
Buthus maui'itanicus, Morocco, etc., p. 373; Pocock, Ann. Nat. Hist. 
(7) x: B. voelschowi , Palestine, p. 597; Werner, Verh. Ges. Wien 
lii : n. spp. 
Centruroides , notes, p. 365, exilicauda , p. 376; Pocock, Ann. Nat. Hist. 
(7) x: (7., 1 ^. 19, synopsis of spp., p. 20, thorelli , p. 22, pi. v, figg. 2, 
2a-c, elegans , p. 22, pi. v, figg. 3, 3a-c, vittatus , p. 24, pi. vi, figg. 1, 
1<2 & 5, sub-granosus , p. 26, pi. vi, figg. 4, 4a & 5, bertholdi, p. 27, 
nitidus , p. 28, pi. vi, figg. 5, 5a & 6, flavopictus, p. 28, pi. vi, figg. 6, 
6a-/ ochraceus , p. 29, pi. vi, figg. 7, 7 a-/ margaritatus, p. 30, pi. vii, 
figg. 1, la-e, 2, 2a & b, gracilis, p. 32, pi. vii, figg. 3, 3a, 4, 4a, rubri- 
cauda, p. 34, bicolor, p. 35, pi. vii, figg. 5, 5a, limbatus, p. 35, pi. viii, 
figg. 1, la, nigrimanus, p. 35, nigrescens, p. 36, pi. viii, figg. 2, 2a, 
3, 3a, fulvipes, p. 36, pi. viii, figg. 4, 4a; Pocock, Arach. Scorpiones, 
Biol. Centr.-Amer. 
C. elegans limpidus, insularis, nigrovariatus (pi. v, figg. 4, 4a), pallidiceps, 
Mexico, p. 24, C. vittatus suffusus, Mexico, p. 25; Pocock, t. c. 
n. subspp. 
C. ornatus, Mexico, p. 26, pi. vi, figg. 3, 3 a kb', Pocock, t. c.: C. hasethi, 
Curaijoa, p. 375; Pocock, Ann. Nat. Hist. (7) x : n. spp. 
Centrums, synonymy, p. 364; Pocock, t. c.: C. princeps, p. 68; Banks, 
P. Washington Ac. iv. 
Chiromachus, synonymy, p. 364; Pocock, Ann. Nat. Hist. (7) x. 
kCyclophthalmus senior, notes; Fritsch, Zool. Anz. xxv, p. 483. 
Diplocentrus, p. 3, whitei, p. 3, pi. i, figg. 2, 2a-/, 3, 3 a-d, keyserlingi , p. 4, 
pi. i, figg. 4, 4a-c; Pocock, Arach. Scorpiones, Biol. Centr.-Amer. 
Euscorpius italicus, histology of nervous system ; Police, Bull. Soc. 
Napoli xv, p. 1. 
Hadrurus, def. and synopsis of spp., p. 5, hirsutus, p. 6, pi. ii, figg. 2, 2a; 
Pocock, Arach. Scorpiones, Biol. Centr.-Amer. 
II. aztecus, Mexico, p. 7, pi. ii, figg. 1, la-/; Pocock, t. c. n. sp. 
Ischnurus, synonymy, p. 364; Pocock, Ann. Nat. Hist. (7) x. 
Isometrus , p. 38, europceus, p. 38; Pocock, Arach. Scorpiones, Biol. Centr.- 
Amer. 
Megacormus, p. 17, granosus, p. 18, pi. v, figg. 1, la-A, segmentatus , p. 18; 
Pocock, t. c. 
Opisthacanthus, p. 1, lepturus, p. 2, figg. 1, 1 a-g \ Pocock, t. c. 
Pandinus percivali, Arabia, p. 368; Pocock, Ann. Nat. Hist. (7) x, n. sp. 
Parabuthus planicauda, p. 365, Jlavidus, schlecliteri, cristatus, p. 367; 
Pocock, t. c.: P. jlavidus, stridulating organ, p. 222, fig. 26; Pocock, 
P. Zool. Soc. London 1902, i. 
P. kraepelini, German S. W. Africa, p. 599; Werner, Yerh. Ges. Wien 
lii, n. sp. 
Plesiochactas, p. 16, dilutus , p. 17, pi. iv, figg. 5, 5a-/; Pocock, Arach. 
Scorpiones, Biol. Centr.-Amer. 
Rhopalurus , p. 36, junceus, p. 37, pis. viii, figg. 5, 5a, ix, figg. 1, la; 
Pocock, t. c. 
R. borellii , Brazil, p. 377; Pocock, Ann. Nat. Hist. (7) x, n. sp. 
Tityus, p. 39, key to spp., p. 40, cambridgei, p. 40, pi. ix, figg. 2, 3, 3a, 
subsp., championi, p. 41, T. festce, p. 42, pi. ix, figg. 4, androcottoides, 
p. 43, pi. ix, figg. 5, 5 a-c, crassimanus, p. 44, pi. ix, figg. 6, 6a-c, 
obscurus, notes, p. 45; Pocock, Arach. Scorpiones, Biol. Centr.-Amer.: 
T. trivittatus, var. conjluens , p. 253; Lonnberg, Ent. Tidskr. xxiii. 
T. engelkei, Colombia, p. 378, kraepelini, Venezuela, p. 379; Pocock, Ann. 
Nat. Hist. (7) x, n. spp. 
Lroctonus, p. 14, niordax, p. 15, pi. iv, figg. 2, 2a-/; Pocock, Arach. 
Scorpiones, Biol. Centr.-Amer. 
1902. [Vol. xxxix.] 
X> 14 
