262 
COLEOPTERA. 
Eunectes sticticus and Dytiscus marginalis from Japan ; D. Sharp, Tr. 
E. Soc. 1874, p. 417. 
Hybrid between Dytiscus latissimus and dimidiatus described and 
figured, with observations on other known cases of hybridism in Coleo- 
ptera ; G. Kraatz, B. E. Z. xviii. pp. 293-296, pi. i. figs. 1-4. 
Dytiscus ihericus, Kos., ? = pisanus, Cast., var. ; id. 1. c. p. 296. 
Graphoderes piciventris, Thoms., = zonatus, Pz., var. ; J. Sahlberg, 
Not. Penn. xiv. p. 161. 
Arctodytcsy g. n., 0. G. Thomson, Opusc. Ent. (fasc. vi.) p. 541, for 
Dytiscus clongatus^ Gyl. 
Ilomceolytrus IHomocoelytratus'], sub-g. n. of Acilius, from which it 
differs in the cupules of the anterior tarsi of the ^ differing slightly in 
size, and in the elytra of the $ not being sulcate, thus agreeing with 
sub-g. Thermonectus, containing exotic species only, and from which the 
author apparently separates it solely on that account. Acilius duvergeri^ 
sp. n., Dax, Landes. E. Gobert, Ann. Soc. Ent. Fr. (5) iv. p. 441, Bull, 
p. cxx. 
Brychius cristatus, sp. n. (J. Sahlberg, MS.), F. Morawitz, Bull. Ent. 
Ross. X. p. xiii. Lapland ; J. Sahlberg, Not. Fenn. xiv. p. 137 (“ December, 
1874,” p. 200). 
Hydroporus fractilinea, S. Solsky, Fedchenko’s Turkestan, ii. 5, p. 134, 
Maracand ; H. rufipes and picicornis (J. Sahlberg, MS.), Morawitz, 
1. c. Lapland ; H. holstrcemi, p. 145, Lapland, ohtusipennis, p. 146, 
Russian Lapland, ruhripes, p. picicornis, p. 152, Lapland [evidently 
the same as H. rufipes and picicornis above mentioned], monilicornis, 
p. 154, Russian Lapland (? = hrevis, Thoms., nec Sahib.), J. Sahlberg, 
1. c . ; H. suhmuticus, C. G. Thomson, Opusc. Ent. (vi.) p. 537, Helsing- 
land; if. {Ccelambus) unguicularis, p. 73, British Columbia, masculinus, 
p. 74, Lake Labache, G. R. Crotch, Tr. Am. Ent. Soc. v. : spp. nn. 
Laccophilus strcehmi, sp. n., C. G. Thomson, 1. c. p. 535, Helsinglaud. 
Qaurodytcs miinmi ( J. Sahlberg, MS,), Morawitz, 1. c. p. xiv. Lapland ; 
G, coriaceus, p. 174, Lapland, obovatus, p. 176 (? = Colymbetes subquad- 
ratus, Mots.), obscuripennis, p. 177, Russian Lapland, ovalis, p. 178, 
Gottlund, 1-seriatus, p. 180, Abo, mimmi, p. 182, North Finland [see 
suproL], J. Sahlberg, 1. c. : spp. nn. 
Agabus amcenus, sp. n., S. Solsky, Fedchenko’s Turkestan, ii. 5, p. 142, 
Urgut. 
Gyrinid;e. 
’ Gyrinus strigosus. Larva described and figured by Schiodte, Nat. Tids. 
(3) viii. p. 211, pi. vi. figs. 3 & 4. 
Hydeophilidj]. 
Ilelophorus, Berosus, Hydrophilus, Hydrous, Hydrobius, Philhydrus, 
Cercyon, and SpJiceridiiim. Larvae tabulated; Schiodte, Nat. Tids. (3) 
viii. pp. 211-216. Berosus signaticollis, larva briefly described, p. 216 ; 
Spercheus emarginatus, larva fully described and figured, pp. 217-221, 
pi. ix. figs. 1-12. 
