242 INSECTA^ COLEOPTERA. 
Scotodipms, Baudi (Bull, Ent, Ital. iii. p. 26 et seq.) reTises and describes 
the Italian spp. of this genus. 
Liotachys, g. n., Bates, 1. c, vii. p. 267. Facies of Anthicus j distinguished 
' from Pericompsus and Tachys by its long and robust antennso, which are dark, 
with 6 terminal joints white. L. antennatus, sp. n., id. 1. c. p. 268, Santarem. 
New species : — 
' Pericompsus grosseptmctatus and picticornis, p. 245, metalHcus, p. 246, Bio 
Janeiro j simplex^ S. Brazil, inimaculatus and incisus^ Amazons, p. 246 : 
id. I. c. 
Xystosomus ovatidiis, driyosits, and gruti, p. 248, R. Janeiro j hilaris and 
scidpticoUis, p. 266, elaphrimts, p. 267, Amazons : id. 1. c. 
Tachys muopicms, platydemSj and fraterculiiSy p, 268, sidcipennis and dro- 
mioides, p. 269, Amazons j squiresi, p. 2C9, B. Janeiro : id. 1. c. ; diminutus, 
Santarem, cycloderm and suhangidatusj R. Janeiro, monostictus, B. Tapajos : 
id. 1. c. viii. p. 11. 
Taehyta parallela^ Ega, melaniU} xanthura^ and crucigeraj R. Janeiro, p. 12 j 
lii uluj p. 13, Adelaide : id. ibid. 
Pei'yj)1ms megaspilus, Walker, List Col. Lord, p. 10, WMy Genneh. 
JBemhidium histriattim [preoccup.], striolatum, convexum, p. 116, hipustu- 
latumy punctipen'iief atriccps, transversicolle, p. 116, sexstriatum, ovatmiij fovea- 
tum,p. 117, hrimnipimnc, ruhicundum^ suhviride, p. 118, amplipenney gagatimmiy 
fiavipes [preoccup.], p. 119, bipartitim^ p. 120 : Macleay, 1. c., Gayndah. B. 
serotinum, Hochhuth, Bull. Mosc. xliv. p. 228, Kie w. 
Scotodipnus subalpinuSf p. 31, Val Sesia j affinis, p. 32, M. Lesima ; alpinus^ 
p. 33, Pinerolo j {Microtyphlus) taurmensisj p. 34, Tiuin ; Baudi, 1. c. 
Dytiscid^e. 
Hydroporides, 
Ilydroporm. Wehncke (B. E. Z. xv. p. 166) somewhat adds to the already 
more than sufficient confusion in the nomenclature of certain allied spp. of 
this genus, by publishing the following synonymy, stated to be founded on 
types received from Thomson & Kiesenwetter \^cf. Zool. Bee. vi. p. 219, vii. 
p. 262, for former notices of synonymy] ; — H. nigrita, Gyll., Thoms., 
bescensj Aub^, Schm. j pubescensj Gyll., Thoms., Fairm., Schm.,= 
nigrita f Stm., Bedt. j acutangulus, Thoms., Sahib. ; brevis, Thoms., = 
nivalis, Redt.,=n(^nVa, F., Er., Aube, Schm. j glabriusculus, Aub(^, ?=zme- 
lanocephalus, Marsh., Gyll., Thoms, j melanoc^hahcs, Aub€, probably 
culatus, Thoms., which the author hesitates to unite to niyellus, Mann, [in 
error. Marsh.]. lie notices errors in Stein’s catalogue, referring to this genus. 
JI. parallelus, Sharp, is renamed longicornis ; pubescens, Gy\H.,=.melanoce- 
phalus. Marsh. {Dytiscus, 1802) [but Marsham’s name cannot in strictness be 
adopted, as there was a prior D. melanocephalus of Bergstrasser, in 1778] ; 
and melanocephalus, Gyll., is renamed scaphiformis [already named atriceps 
by Crotch, cf. List &c. p. 20, and Zool. Bee. vii. p. 262] ; Sharp, Ent. M. M. 
vii. p. 205. 
H. ferrugineus, Luc. {nea ^iQ^h..),=iUirgidus, Er. : Wehncke, 1. c. p. 206. 
JI. rujifrons, Dufts. (1805, Dytiscus), nec Miill. (1776, id.), nec F. (1792, 
id.), is renamed duftschmidti by the Recorder, Ent. Ann. 1872, p. 47. 
