34 Ins. 
COLEOPTERA. 
DyTISCIDiE. 
Aciliua sulcatus and Dytiscus marginalia^ voracity ; Roland, Feuill. Nat. 
xi. p. 74. 
Hydroporua dorsalis, Fabr., Yaxv. Jiguratua, Gyll, and aihirica, noticed ; 
Maklin, Sv. Ak. Handl. (2) xviii. p. 22. H, strigosulus, Fairmaire, re- 
described by him ; Ann. Soc. Ent. Fr. (6) i. p. 250. 
Noterus crassicornis, Cl. Curious structure of the larva described ; a 
similar larva from amber has been described by Berendt as one of the 
Lepismatidce {Glossaria rostrata,'BQV.) ; Martens, SB. Nat. Fr. 1881, p. 107. 
X Colymbetes fuscus var. affinis, from Berlin, described ; Karsch, B. E. Z. 
XXV. pp. 222 & 223. 
Agahus suhquadratus, Motsch., and var. saturatur, from Novaya Zemlya 
and Waigatsch, noticed, and A, altaicus, Gebl., var. cincticollis, from 
Siberia, described; Maklin, Sv. Ak. Handl. (2) xviii. 4, pp. 16 & 22. 
A. masteri, Mach, = spilopterus, Germ. ; Harold, MT. Miinch. ent. Ver. 
iv. p. 149. A. nebulosus, Foerst., \?ly. pratensis, from Malorca, described; 
•Schaufuss, Verb. z,-b. Wien, xxxi. p. 620. 
Dytiscus. Notes on habits and coloration; Dohrn, S. E. Z. xlii. 
pp. 155 & 156. Larva attacked by mould ; Sci. Goss. xvii. p. 143. D. 
dimidiatus, Berg, polymorphism in $ ; Fiori, Bull. Ent. Ital. xiii. 
pp. 274-277. D. lapponicus, Gyll, habits; White, Scot. Nat. vi. pp. 145-147. 
Hydaticus transversalis, aberration; Dohrn, S. E. Z. xlii. pp. 121 122. 
Hydroporus dorso-plagiatus, sp. n., Fairmaire, Ann. Soc. Ent. Fr. (6) i. 
p. 249, Yiti. 
Hydrovatus pusillus, sp. n., Regimbart, Ann. Mus. Genov, xvi. p. 620, 
Sumatra. 
Rhantus mixtus, sp. n., Waterhouse, P. Z. S. 1881, p. 81, Tom Bay. 
Agabusbrandti,B^. n., Harold, MT. Miinch. ent. Ver. iv. p. 148, Peking. 
Hydaticus concinnaticius and concolorans, Wallengren, Ent. Tidskr. ii. 
pp. 14 & 15, Transvaal, spp. nn. 
Gyrinid^e. 
Gyrinua. Cocoon noticed ; Leprieur, Bull. Soc. Ent. Fr. (6) i. pp. Ivii. 
& Iviii. G. natator and parasites, noticed ; Parfitt & Hellins, Ent. M. M 
■xviii. pp. 79, 88 & 89, and Rep. Devon. Ass. xiii. p. 261. 
Dineutes ianthinus, Blanch., redescribed ; Fairmaire, Ann. Soc. Ent. Fr 
(6) i. p. 250. 
Orectochilus villosus, Fabr., habits ; Leesberg, Tijdschr. Ent. xxiv. 
p. xxiii. 
Orectochilus semisericeus, sp. n., Gestro, Ann. Mus. Genov, xvi. p. 202, 
Shoa. 
Hydrophilid^. 
Kuakenberg, C. F. W. Ueber die Hydrophilus-TjymphG und iiber die 
Hamolymphe von Planorbis, Lymnceus, und Paludina. Verb. Ver. 
Heidelb. (2) iii. pp. 79-88. 
The lymph of HydropJiilus piceua darkens on exposure to the air, and 
