DYTISCID^, HYDBOPHILID^. 
293 
the acts of ovipositing in this and allied species : the eggs are laid in 
incisions in the stems of water-plants, made by a sharp; auger-like 
process exserted from the apex of the abdomen of the parent, and pro- 
jecting beyond the oviduct ; the anatomy of the genital segments is 
described and figured. M. R^gimbart, Ann. Soc. Ent. Fr. (6) v. pp. 
201-206, pi. iv. No. iii. figs. 1-4. 
Dytiscus ihericuSj Rosenh., = pisanus. Cast., var. ; G. Kraatz (quoting 
S. de Uhagon), Deutsche E. Z. 1875, p. 232. 
Acilius sulcatus producing a humming sound ; Brischke, Schr. Ges. 
Danz. 1874 ; Ent. Nachr. f. p. 160. 
Hydaticus japonicus^ Shp., adamsi^ Clk. : H, adamsi, Shp., = how-^ 
ringi, Clk. ; D. Sharp, P. E. Soc. 1875, p. vi. 
Haliplus multipunctatus, N. Germany, Jieydeni^ Harburg, spp. nn., E. 
Wehncke, Deutsche E. Z. 1875, p. 122. 
Hydroporus caspius, Astracan, hrucki, Salonica, spp. nn., id. 1. c. 
p. 234. 
Trogus (Cybister) irritans, sp. n., C. A. Dohrn, S. E. Z. xxxvi. p. 290, 
Elmina, Gold Coast. 
Dytiscus sharpi, sp. n., E. Wehncke, S. E. Z, xxxvi. p. 500, Japan. 
Hydrophilid^. 
Sahlberg, J. Enumeratio Coleopterorum palpicornium Fenniae. Not. 
Fenn. (n.s.) xi. [= xiv. of the whole work] pp. 201-227. 
73 species are enumerated, with bibliographical references and 
localities. 
HydropMlus pistaceus differs from piceus^ not only in wanting the 
sutural spine and in the more sharply dilated 5th tarsal joint in the $ , 
but in having a deep bowl-like furrow in the prosternal keel ; Duverger, 
Bull. Soc. Ent. Fr. (5) v. p. vi. 
Philhydrus and Helochares. Observations on the European species ; 
P. sutu7'alis, Shp., = coarctatus, Gredler. L. v. Heyden, Deutsche E. Z. 
1875, pp. 394-397. 
Philhydrus nigricans^ Zett., = frontalis^ Er. ; P. ajffinis, Sahib., = mar- 
ginelluSy Er. ; P. marginatus, Seidl., = ovalis, Th. ; P. punctulatus, Sharp, 
= Hydrophilus griseus. Sahib., = Helochares lividus, Forst. ; J. Sahlberg, 
1. c. pp. 217 & 218.' 
Anaccena.. The German species described, with synonymy. A. varia- 
hilis, Shp., = carinata^ Thoms., = globulus^ 111., Gyll., Muls,, Seidl., = 
minutaj Hbst., Msh., = liinbata^ Fab., Er. ; H. v. Kiesenwetter, Deutsche 
E. Z. 1875, pp. 228-232. 
Sepidulum, Lee. [Zool. Rec. xi. p. 263], recharacterized, and its affinities 
stated to be greater with Spercheus than any known genus ; D. Sharp, Ent.. 
M. M. xi. p. 247. 
Helophorus borealis, Thoms., nec F. Sahib., = fennicus, Sahib., nec 
Payk., var., and is renamed gyllenhali (p. 210) ; H. pallidipennis, Th., = 
borealis, F. Sahib. ; H. griseus, Thoms., = dorsalis, Er., nec Marsh., = 
erichsoni, Bach ; H. granularis, Sahib., = ceneipennis, Th. ; H. brevicollis. 
