250 
INSECTA^ COLEOPTERA. 
Opusc. Ent. (iv.), p. 368, Gaurodytes anyusticollis, J. Sahib, (neo Mots.) = 
adpressus, Mann. : F. W. Maklin, S. E. Z. xxxiii. p. 247. 
Ilybim <enescem, Thoms., recorded as British : E. C. Rye, Eat. M. M. ix. 
p. 36. 
Agahm heydmij p. 134, Sierra Nevada, rotundatus, p. 135, Sardinia: 
Wehncke, B. E. Z. xvi., spp. nn. 
llyhim kicsomvetten, sp. ii., id, 1. c, p. 136, llarburg. 
Dytiscides. 
Trogus costcdis, F. (1775), being a Dytiscus, and 7’. costalis, 01., F. (1801), 
a Cybisterj the latter is [? necessarily] named olivieri j Hydaticus lineatus, 
F., should stand for stagnnlis, F., hunteri, Crotch, be used for the preoccupied 
fasciatiis, F., and bauksi, Or., for the preoccupied ru^coUis, F. : G. R. Crotch, 
C. II. 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- 
porimonts upon the powers of adherence of the tarsi of the males of Acilius, 
DytiscuSj 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 <5 , when in a transverse position, to secure himself on 
the back of the $ . He proposes the term ‘‘ sessiles ” for the larger and ‘^p^- 
dicultSes ” for the smaller cupiiles or suckers on the underside of the tarsi in 
the 
Acilius fasciatus in early spring climbs up water-plants and basks in the 
sun : P. Cameron, jun., Scot. Nat. i. p. 265. 
GyRINIDJ2. 
Dineutes caledonicuSj 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. 
Hydropiiilid^. 
Limnebius. Baudi, Bull. Ent. Ital. iv. pp. 35-40, discusses the Italian 
species. 
Sphceridiu 7 n dytiscoides, F., ex. typ., is a true Cyclonotutn, occurring at the 
Cape of Good Hope, and has nothing to do with Hactylusternum abdominale j 
T. V. Wollaston, Ann. N. H. (4) x. p. 114. 
Cyloma, g. n.. Sharp, Ent. M. M. ix. p. 152. Connects the Sphesridiides and 
HydrophilideSj having the short basal joint of the hind tarsus characteristic 
of the latter. C. laivsonus [s^c], sp. i\.,id. ibid.j Auckland, New Zealand. 
Fhilhydrus suturalis, sp. n., id. 1. c. p. 153, Gt. Britain. 
Laccobius atricephalus and kiesenwetieri^ spp. nn., Reitter, B. E. Z. xvi. 
p. 178, G^ryville, Oran. 
