DYTtSCID^— HYDROPHILID.T:. 
Ins, 41 
Hydroporus hispanicus, Ros., = opatrinus, H. depressicollia, Ros., pro- 
bably = carinatus^ Aubd, var. ; C. E. Leprieur, Bull. Soc. Ent. Fr. (6) 
viii. p. xvii. 
Laccophilus. The faculty of skipping possessed by species of this 
genus indicated as not before recorded; id. 1. c. p. cxxxvii.' \_Cf. R^gim- 
bart, Ann. 1. c. p. 458.] 
Dytiscus (? circumcinctus) met with half-way between Russia and 
England in the North Sea ; B. Haase, Ent. Nachr. iv. p. 25. 
Dytiscus rnarginolis and Cyhister dying soon after food when kept 
some time without it ; J. & P. Passy, Feuil. Nat. viii. p. 64. 
Dytiscus marginalis. The crystalline lens of the eye figured in O. 
Schmidt’s paper, “Die Form der Krystallkegel im Arthropodenauge,’* 
Z. wiss. Zool. XXX. suppl. (pp. l-!3) pi. i. fig. 16. 
New genera and species : — 
Homceodytes, Regimbart, 1. c. pp. 451 & 458. Differs from Cyhister in 
its free posterior claws, the outer one being smaller and moveable. For 
C. scutellaris^ Germ. 
Platynectes^ id. 1. c. pp. 454 & 462. Allied to Platamhus^ Thoms., 
with epipleura very narrow after the middle of the elytra, body depressed, 
and pronotum very short. For Agahus \^-notatus^ Aube, sub-maculatus, 
Cast., spilopterus, Germ., tasmanim and hakewelli, Clarke, with others 
from America and Australasia. 
Peltodytes.^ vide supr^. 
JIaliplus rohustus, D. Sharp, Ann. But. Belg. xx. p. 120, Antigua ; 11. 
immaculatus, J. Gerhardt, Z. E. Ver. Schles. 1877, p. 38, Leignitz. 
Hydroporus decipienSy Sharp, 1. c. p. 113, Portugal ; H. stidgosulus, Fair- 
maire, Pet. Nouv. ii. p. 278, Fiji ; II. congruus, Le Conte, Bull. U. S. 
Geol. Surv. iv. p. 452, Colorado ; II. seminidum^ p. 377, Florida, lacco- 
philinuSj p. 595, Detroit, id. P. Am. Phil. Soc. xvii. 
Suphis semipunctatus, Le Conte, 1. c. p. 695, Michigan. 
Laccophilus pumilio^ id. 1. c. p. 596, Florida. 
Gaurodytes leptaspis and longulus^ id. 1. c. p. 696, Lake Superior ; G. 
nanus, id. Bull. U. S. Geol. Surv. iv. p. 452, Colorado. 
Agahus dichrous, Sharp, J. A. S. B. xlvii. 2, p. 169, Pamir. 
Ilyhius cinctus, id. ihid., Yangihissar. 
Cyhister semirugosus, E. v. Harold, MT. Munch, ent. Ver. ii. p. 100, W. 
Central Africa. 
Gyrinid.®. 
Gyrinus .apicalis, p. 117, Santa Cruz, and derasus, p. 118, Barbacena, 
spp. nn., Sharp, Ann. Ent. Belg. xx. 
Dineiites angustus, Le Conte, P. Am. Phil. Soc. xvii. p. 378, Florida ; 
D. quadrispina, Fairmaire, Ann. Soc. Ent. Fr. (5) viii. p. 88, Central 
China: spp. nn. 
Hydrophilida’. 
Laccohius. J. Geihardt, Z. E. Ver. Schles. 1877, p. 7 et seq., discusses 
