28 Ins. 
COLEOPTERA. 
elytra in the species discussed, 1. c. p. 39. Cf. also Bull. Soc. Ent. Fr, 
(5) vi. pp. Ixi. & lxii.,ciii.-cxv., cxix.-cxxii. ; andMT. schw. ent. Ges. iv. 
pp. 566-570. 
Hydroporiis assimilis, Payk., var. wanting the basal thoracic spots, 
from Cumberland ; E. C. Rye, Ent. M. M. xii. p. 175, 
Laccophilus sp. (foss.). Remains described from Rocky Mountains 
tertiariesj S. H. Scudder, Bull. U. S. Geol. Surv. ii. p. 78. 
Agabus femoralis and uliginosus differentiated ; Lepiieur, Bull. Soc. 
Ent. Fr. (5) vi. p. xxxi. 
Dytiscus circwnflexus and circumcinctus. On their colour differences, 
&c. ; G. Kraatz, Ent. MB. i. p. 151. 
Dytiscus margifialis emitting sound ; M. Isenschmid, Ent. Nachr. ii. 
p. 121. 
New species : — 
Cnemidotus festivus^ E. Wehncke, S. E. Z. xxxvii. p. 356, Texas. 
Vatellus lentus, p. 356, Portorico, haagi^ p. 357, Corrientes, id. 1. c. 
Hydrovatus clypealis, D. Sharp, Pet. Nouv. ii. p. 61, S. England, France, 
Algeria [= Oxynoptilus cuspidatus, Crotch, Moncreaff, nec Kunze]. 
Hydroporus inconspectuSy Leprieur, Pet. Nouv. ii. p. 53 (no locality 
given), fig. of thorax, p. 89, No. 6 ; II . bombycinus, id., Bull. Soc. Ent. 
Fr. (5) vi. p. cxxii. (no loc.) ; H. acuminatellus, Boghari, and subtrunc- 
tatus, Biskra, L. Fairmaire, Pet. Nouv. ii. p. 49 ; II. wakefieldiy p. 20, 
duplex^ p. 21, D. Sharp, Ent. M. M. xiii.. New Zealand ; II. habelnianniy 
E. Wehncke, Ent. MB. i. p. 76, Dalmatia. 
Hydrocanthus rugoso-punctatus, Madagascar, and lineatuSy Mexico, 
p. 221, weisiiy and morsbachi, p. 222, and indicus, p. 223, Cochin China, 
orientalisy Madras, Tranquebar, and haagi^ Siam, p. 222, badeniy Angola, 
semperi^ Luzon, and australasice, North Australia, p. 224, E. "Wehncke, 
Deutsche E. Z. 1876. 
Colymbetes {Bantus) socialis^ C. 0. Waterhouse, Ann. N. H. (4) xviii. 
p. 106, Rodiguez Island. 
Trogus \_Cybister'\ godeffroyi^ p. 357, Australia, haagi, Nubia, and 
natalensis, Natal, p. 358, nigripes^ Borneo, and steinJieili, Columbia, p. 359, 
Wehncke, S. E. Z. xxxvii. 
Dytiscus per sicuSy id. 1. c. p. 52, Persia. 
Hydaticus insignis, p. 194, bipunctatus, p. 196, p>hilippensisy p. 197, 
Philippine Isles, do&meliy Cape York, and riehli^ Cuba, p. 195, maculatuSy 
p. 196, Cuba, id. 1. c. 
Gyrinida:. 
Dineutes picipes, sp. n., C. O. Waterhouse, Ann. N. H. (4) xviii. p. 107, 
Rodriguez Island. 
Enhydrus tibialis^ Brazil, and atratus, Panama, spp. nn., M. R^gimbart, 
Bull. Soc. Ent. Fr. (5) vi. p. ccxv. 
Hydrophilidac. 
Ilydrophilus piceus, L., and aterrimuSy Esch., diagnosed ; Doebner, Ent. 
Nadir, ii. p. 139. Varieties of H.piceus ; G. Eichler, 1. c. p. 168. 
