.236 
ZOOLOGICAL LlTEllATUKL. 
Dytiscid.e. 
The German species of this family are described in the part of the ^Na- 
turgeschichte der Insecten Deutschlands’ published at the end of 1807. This 
portion was very nearly completed by the late Professor Schaum before he 
was seized by his last illness j it has been completed by Kiesenwetter. 
The arrangement is that adopted by Erichson in his ‘Kafer der Mark 
Brandenburg.’ 
Reiche calls attention to the presence, in most females of JDytlscus lalis- 
simus, of a membranous lamina, covering the last two abdominal segments. 
He supposes that the individuals thus furnished have not laid their eggs. 
Bull. Soc. Ent. Fr. 1867, p. iii. (See also under Papilionules.) See also a 
further note by F. de Saulcy, 1. c. p. x. 
AubjS discusses (Ann. Soc. Ent. Fr. 4® s4r. vii. pp. 260-258) the characters 
and synonymy of Hydroporus (Germ.) and its allies, which ho 
settles as follows: — 1. II. opatrinua (Germ.), inch hispanicus (Rosenh.), 
lareyniei (Fairm.), and coarcticollis (Reiche) ; 2. H. mocstus (Fairm.) == opa- 
trinus (Aub^ & Fairm. et Laboulb.)j and 3. H. vestitus (Fairm.). 
Muhbay remarks that his Ayahm hydroporoides is a Celina. He gives a 
list of 6 known species of the genus. Ann. & Mag. N. H. 3rd ser. xix. p. 170, 
Ilidiplm Uneolatus? (Mann.). Larva described and figured by Gernet 
(Horse Soc. Ent. Ross. v. p. 16, pi. 2. fig. 4). 
Agahus uUginosus. Perty (Mitth. naturf. Ges. in Bern, 1867, p. 307 and 
fig. 6) describes and figures an example having the right hind tibia singu- 
larly deformed, and bearing two tarsi. 
Oxynoptihis^ g. n., Schaum, Nat. Ins. Deutchl. i. 2. p. 22. Allied to 
Hyphydrua \ posterior tarsi with equal moveable claws j prosternum dilated 
at apex, metasternum broad in front j intermediate legs very distant ; elytra 
cuspidate at apex. Sp. II. cuspidutus (Kunze). 
New species : — 
Agahus godmamiy Crotch, Proc. Zool, Soc. 1867, p. 385, pi. 23. fig. 3, 
Azores. * 
Ilydroporus glabcUus, 0. G. Thomson, Skand. Col. ix. p. 80, Scandinavia. 
Hydroporus fuscipennis, Schaum, 1. c. p. 64=H’. piceus (Sturm nec Steph.) 
=piiberulus (Mann.) ; H. kraatzii, Schaum, 1. c. p. 66. 
Hydaticus ptmctipenms, C. G. Thomson, 1 . c. p. 87, and II. Icevipennis, 
Thoms. 1. c. p. 88 ( = H. transversalis, auct.), Scandinavia. 
Erighnus unguicidarisf C. G. Thomson, 1. c. p. 101, Ringsjon and Lund. 
Gaurodytes clypealisy C. G. Thomson, /. c. p. 107, Scania j G, higutkdusy 
Thoms. 1. c. p. 110, North Scandinavia. 
Laccophilus vertnicndosuSy Gerstiicker, Arch. f. Naturg. xxxi. p. 25, Zanzibar. 
Hyphydrus crassus, Wollaston, Col. Hesp. p. 33, Cape Verde Islands. 
Copelatus formosus, Wollaston, 1. c. p. 34, Cape Verde Islands (S. lago). 
Haliplus sctmimii, Solsky, Hora) Soc. Ent. Ross. v. p. 29, Koslow (East 
Russia). 
Gyrinid^e. 
The German species of this tamily are described by Kiesenwetter (Nat. 
Ins. Deutschl. i. 2. pp. 127-144). 
Orectockilus schistaceus, sp. n., Gerstacker, Arch. f. Naturg. xxxi. p. 25, 
Zanzibar. 
