DYTlSCIDilS. 
243 
II, mixtusj pulcher^ and rufulus, Mots., require renaming, on account 
of the prior spp. of Leconte & Aub^ of those names : Ballion, Bull, Mosc, 
xliv. p. 162. 
H. hicarinatus, Clairv. Des Loges, Mitth. schw. eut. Ges, iii. p. 337, de- 
scribes a Corsican var. of this sp., under the name ohscurior. He (p. 376) 
considers Fairmaire wrong in thinking his H. mcestus and vestitus distinct. 
If. acutatiguluSf Thoms. J. Sahlberg (Not. Fenn. xi. p. 406) records a Lap- 
land variety of this species, possibly entitled to specific rank. 
If. hamatus, GyU., occurs in Algeria : Leprieur, Ann. Soc. Eut. Fr, (6) i. 
Bull. p. xxxi. 
Necterosoma, g. n., Macleay, 1. c. p. 124. Allied to Ifydroporus, but with 
long and stout anterior femora and tibiae (the latter widely emarginated in 
the middle of the inner side in the cf ), and the 4 ant. tarsi 6-jointed. JV. 
vittipenne and ^avtcolle, spp. nn., id. 1. c. p. 126, Gayndah j (^Ifydroporus) peni- 
cillatus^ wollastoni, dispar ^ &c., Clark. 
Ifyphydrus lugubrisj sp. u., de Borre, Ann. Ent. Belg. xiv. c.-r. p. x, 
Sinai. 
Ifydroporus honnairii, avunculus , and nigricollis, Fairmaire, Ann. Soc. Ent. 
Fr. (6) i. Bull. p. Ixxii (diagn. only), Corsica ; If. corsicusy Corsica, opacuSf 
Lapland, Pyrenees, Wehncke, 1. c. p. 163; If bifasciatus, p. 121, 
foveiceps, hrunnipenniSj fossulipennis, p. 122, nebulosusy mastersiy p. 123, 
luridus, basalisy politus, p. 124, Macleay, 1. c., Gayndah ; H. crotchi, de Borre, 
1. c. p. xiii, Sinai ; If. horysthenicus, Hoclihuth, Bull. Mo^c. xliv. p. 233, 
Dnieper ; H. moestus [preoccupied] and semictusus, p. 10, lanceolatus, p. 11, 
WMy Ferran, Walker, List Col. Lord; H. distinguendus and 
p. 338, nigricollisy p. 339, Corsica, des Loges, 1. c. : spp. nn. 
Colymbetides. 
Hyhius cenescens and Agahus unguicularis, Thoms., are recorded as German 
by Kraatz, B. E. Z. xv. pp. 166 & 167. 
Agahus fuscipennisy Payk. J. Sahlberg (Not. Fenn. xi. p. 336) indicates 
differences, possibly of specific value, between Carelian and Lapland indi- 
viduals. 
Suphis lineatus, sp. n., Horn, Trans. Am. Ent. Soc. 1871, p. 329, Lower 
California. 
Laccophilus quadrilineatuSy sp. n.yid. 1. c. p. 330, Texas. 
Colymhetes inccqualiSy id. 1. c. p. 330, N.E. California, Oregon ; C. simplex 
and mcludensy Walker, l.c. p. 11, Arabia : spp. nn. 
Scidopterus imhricatusy sp. n., Wollaston, Tr. E. Soc. 1871, p. 220, Madeira. 
Ilyhius hadeniy Wehncke, B. E. Z. xv. p. 164, Hamburg, Altona; I. ovatusy 
Ilochhuth, Bull. Mosc. xliv. p. 237, Kiew : spp. nn. 
Agahus parallelipennisy des Loges, Mitth. schw. ent. Ges. iii. p. 337, Cor- 
sica ; A. ahnormicollisy Ballion, Bull. Mosc. xliii. p. 329, Turkestan; A. kessleriy 
Hoclihuth, ihid. xliv. p. 238, Kiew ; A. master siy Macleay, 1. c. p. 126, 
Gayndah : spp. nn. 
Gaurodytes (Agahus) tliomsoniy p. 407, angusticollisy p. 408, horccllusy p. 409, 
Finland : J. Sahlberg, 1. c., spp. nn. 
Copelatus irregularis, p. 126, elongatuluSy p. 127, Gayndah (the former also 
from Lizard Island) : Macleay, 1. c., spp. nn. 
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