COLEOPTERA. 
40 Ins . / 
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Pachytes elegans , Montr., australis and caledonice, Clark, and illigeri, 
Perr., are synonyms, p. 339; Bhantus pulverosus , Steph., and ? montrouzierx , 
Luc =punctatus, Fourcr., p. 342; Cybister temnenlci, Aub6, gostchi, Hoch., 
immaculatus , novas- caledonice, and artensis, Montr., = tripunctatus , Oliv., 
pp. 345 & 346 : Fauvel, Rev. d’Ent. ii. 
Hydroporus granularis, Linn., aud bilineatus, Sturm, discussed ; Sahl- 
berg, Medd. Soc. Fenn. ix. pp. 133 & 134. 
Canthydrus auritus, Reg., = semperi, Wehncke ; Wehncke, Deutsche 
E. Z. xxvii. p. 149. 
Laccophilus insignis , Sharp, and pictus , Lap., noticed and figured ; Horn, 
Tr. Am. Ent. Soc. x. pp. 277 & 283, pi. ix. figs. } & 2. 
Agabus chalconotus , Panz., and fusco-cenescens , Rdgimb., discussed ; the 
latter is a well-marked form, but not truly distinct : Baudi & Rdgimbart, 
Nat. Sicil. iii. pp. 7, 8, 38, & 39. 
Dytiscus. Longevity in D. rceseli (amounting in one case to 5| years) ; 
the ova apparently only develop, even after fertilization, under favour- 
able conditions ; cannibalism and voracity of D. lapponicus : Sharp, Ent. 
M. M. xix. pp. 260 & 261. D. latissimus : structure, colouring, and 
ferocity of male ; Doebner & Dohrn, S. E. Z. xliv. pp. 388-390. 
Eunectes succinctus , Klug, = sticticus, Linn., var. ; Dohrn, S. E. Z. xliv. 
pp. 361 & 362. 
Hydaticus clairvillii , Montr., and dorsalis , Luc., = gorii and consan- 
guineus , Aube, respectively ; II. congestus , Klug, and rochasi, Montr., = 
signatipennis , Cast. : Fauvel, Rev. d’Ent. ii. p. 344. 
Hydatonychus, g. n., Kolbe, Arch. f. Nat. xlix. p. 402. Allied to Hydro- 
vatus\ middle joints of antennae much thickened, front claws extremely 
developed. Type, II. crassicornis, sp. n., 1. c. p. 403, Madagascar. 
New species : — 
Haliplus nigro-lineatus , Monte Video, sicidus , Sicily, p. 145, and bran- 
deni, St. Domingo, p. 146, Wehncke, Deutsche E. Z. xxvii. 
Gnemuloius mexicanus , id. 1. c. p. 145, Mexico. 
Ilygrobia davidi, Bedel, Bull. Soc. Ent. Fr. (6) iii. p. xxiii., Kiang-Si, 
China. 
Derovatellus orientalis , Wehncke, l. c. p. 149, Borneo. 
Bidessus pcrexiguus and plagiatus , Kolbe, Arch. f. Nat. xlix. p. 407, 
Madagascar ; B. noteroides , R^gimbart, Notes Leyd. Mus. v. p. 227, Java. 
Pachydrus ritsemce , id. 1. c. p. 226, Brazil. 
Hydrovatus dilutus, cruentatus , and subpunctatus, Kolbe, l. c. pp. 403-405, 
Madagascar. 
Hydroporus pectoralis, Sahlberg, Medd. Soc. Fenn. ix. p. 133, Finland 
(in the male, the metasternum, the inner side of the hind coxae, and tro- 
chanters are clothed with a thick felt of short silky hair, which, in the 
female, extends to the suture of the elytra) ; II. palliatus , California, 
picturatus , fig. 4, p. 283, and quadrimaculatus, fig. 5, Western Nevada, 
p. 284, Horn, Tr. Am. Ent. Soc. x. pi. ix. ; II. ( Deronectes ) septemvittatus , 
R6gimbart, l. c. p. 228, Bahr-el-Abiad. 
Ilydrocoptus Icoppi , Addah, West Africa, and sharpi, Borneo, Wehncke, 
l. c. pp. 146 & 147. 
