250 
INSECTAj COLEOPTERA. 
Opusc. Ent. (iv.), p. 368. Gaurodytes angusticolUs, J. Sahib, (nec Mots.) = 
adpressus, Mann. : F. W. Maklin, S. E. Z. xxxiii. p. 247. 
Byhim (enescem, Thorns., recorded as British : E. C. Rye, Ent. M. M. ix. 
p. 36. 
Agabus heydeni, p. 134, Sierra Nevada, rotundatus, p. 135, Sardinia: 
Wehncke, B. E. Z. xvi., spp. nn. 
llyhius kiesmwetteri, sp. n., id. I. c. p. 136, Harburg. 
Dytiscides. 
Tragus costalis, F. (1775), being a Dytiscus, and T. costalis, 01,, F. (1801), 
a Cybister, the latter is [? necessarily] named olivieri ; Hydaticus lineatiiSy 
F., should stand for stagnalis, F., hunteri, Crotch, be used for the preoccupied 
fasciatus, F., and hanksi, Cr., for the preoccupied riificoUis, F. : G. R. Crotch, 
C. H. X. p. 205 (v. Harold, ibid, note, objects to the latter names proposed 
by Crotch). 
Von Frauenfeld (Verb. z.-b. Wien, xxii. p. 390) refers to Dytiscus margi- 
nalis and latissimus as giving the first indications of the approach of the 
phenomenon known in Germany as ^ Fischaufstand,' being apparently the 
rushing by fishes to the surface of the water after the winter's lethargy. 
Plateau (Ann. Ent. Belg. xv. pp. 205-212) publishes the results of ex- 
periments upon the powers of adherence of the tarsi of the males of Acilius, 
Dytiscus, and Hydaticus to the bodies of the females during copulation ; and 
finds that the weight necessary for disconnexion is 13 times that of the 
insect. He considers that the sulcations on the elytra of the $ are merely 
of use in assisting the c? , when in a transverse position, to secure himself on 
the back of the $ . He proposes the term " sessiles " for the larger and " p^- 
diculees " for the smaller cupules or suckers on the underside of the tarsi in 
the cJ. 
Acilius fasciatus in early spring climbs up water-plants and basks in the 
sun : P. Cameron, jun., Scot. Nat. i. p. 265. 
GYRINIDiE. 
Dineutes caledonicus, sp. n., Fauvel, Bull. Soc. L. Norm. (2) i. p. 177, 
note, pi. i. figs. 13-14 (apex of elytra of D. australis and this sp.), New 
Caledonia. 
Hydrophilid^. 
Limnebius. Baudi, Bull. Ent. Ital. iv. pp. 35-40, discusses the Italian 
species. 
i^hcsridium dytiscoides, F., ex. typ., is a true Cyclonotum, occurring at the 
Cape of Good Hope, and has nothing to do with Dactylosternum abdominale ; 
T. V. "WoUaston, Ann. N. H. (4) x. p. 114. 
Cyloma, g. n., Sharp, Ent. M. M. ix, p. 152. Connects the %)hceridiides and 
Ilydrophilides, having the short basal joint of the hind tarsus characteristic 
of the latter. C. lawsonus [sic], sp. n., id. ibid., Auckland, New Zealand. 
Philhydrus suturalis, sp. n., id. I. c. p. 153, Gt. Britain. 
Laccobius atricephalus and kiesmwetteri, spp. un,, Reitter, B. E. Z. xvi. 
p. 178, G^ryville, Oran. 
