222 
ZOOLOGICAL LITERATURE. 
that Thomson, in making two species of the forms described under this name 
by previous authors, has entirely got rid of the name transversalis, of which 
lie does not approve. He quotes Thomson’s descriptions of the two new 
species, II. 'pumiipcnnis and II. Icevipennk. 
Aijahus ajfinis (l^ayk.). Sharp discusses the characters of this species and 
of A. umjuieularis (Tlioms.), whicli has been identified with it both in this 
country and on the Oontinent. Ent. INf. Mag. v. pp. 17-18. 
Aube states, from the examination of additiomil materials, that Hydro- 
porus kispanicus (Hosenh.) is distinct from II. opatrinus (Germ.), but that JT. 
lareyniei (Fairm.) and coarcticullis (Reiche) are identical with II. hispanicus. 
The latter name has the priority. Bull. Soc. Ent. Fr. 18G8, p. xlv. 
Ilydroporm cleyans. Rye remarks upon a difference in the form of the 
thorax in the two sexes of this species. Ent. M. IMag. v. p. 109. 
Ilydroporus melanocephalus. The species cited under this name by 
Preller is not the II. mclanoccjludus (AubtS). Kraatz, Berl. ent. Zeitschr, 
1868, p. 290. 
Ilydroporus elonyatus (Sturm) occurs near Lanercost, Cumberland, accord- 
ing to Bold, Ent. M. Mag. iv. p. 283. 
■ Ilydroporus 7iicobaricus, sp. n., Redtenbacher, Reise der Novara, Zool. ii. 
Col. p. 21, Nicobars. 
Ilaliplus varius (Nicol.) is also recorded by Bold from near Newcastle, 1. c. 
p. 284. 
Ayahus hydroporoides (Mui’r.) is a Celina, and Eunectes conicollis (Woll.) = 
helvolus (King). Harold, Col. Hefte, iv. p. 100. 
Ayahics solieri (Aub<5) ocems in Scotland, according to Sharp, Ent. M. Mag. 
iv. p. 232. See also M‘Nab, 1. c. p. 283. 
Dytiscus lapponicus. Its occurrence in Ireland recorded by J. E. Somerville, 
Ent. M. Mag. v. pp, 141-142. 
Lcccopldlus (sic) Qnaculosus, sp. n., Walker, T.ord’s Naturalist in Van- 
couver’s Island &c. ii. p. 317, Vancouver’s Island and Northern United 
States. 
Gyrinid^. 
Sharp publishes (Ent. M, Mag. v. pp. 52-00) descriptions of the British 
species of this family. He characterizes the genera Gyrinus and OrectocheiluSj 
and enumerates 10 species, namely ; — G. minutus (Fab.), tirinator (111.), na- 
tutor (Scop.), of which G. meryus (Ahr.) is the southern form, bicolor (Payk.), 
distinctus (Aub(i), caspius (Aiib«S), colymbus (Er.), 7 narinus (Gyll.), opacus 
(Sahib.), and O. villosus (Fab.). 
Gyrinus discifer (Walk.) is described and figured, and referred to the genus 
GyreteSj by Redtenbacher (Reise der Novara, Zool. ii. Col. p. 24, pi. I. 
fig. II). 
Gyretes ceylonicus, sp. n., Redtenbacher, 1. c. p. 24, pi. 1. fig. 10, Ceylon. 
Patrus dilatatus, sp. n., Redtenbacher, 1 . c, p. 25, pi. 1. fig. 12, Ceylon. 
Palpicornia. 
Kraatz remarks (Berl. ent. Zeitschr. 1808, p. 290) that Miilsant’s name 
Ilclophorus obscurus has the right of priority for Erickson’s II. aquuticus over 
II. amcipmnis (Thoms.). 
Frauenfeld (Verb, zool. -hot, Ges, in Wien, xviii. p. 900) notices a speci- 
