188 
[January, 
Suphis, Canthy drus, and Hydrocanthus) ; and two other groups, Vatellini (gen. 
Macrovatellus, J atellus, and Berovatellus ) and Laccophilini (gen. Laccophilus and 
Neptosternus). 
Ihe Dytisci complicati are composed of two isolated and separate genera, 
three tribes, and two groups. They commence with Amphizoa (so that the family 
character of the possession of natatorial legs must be set aside), followed by the 
tribe llydroporides, made up of three groups, Hydrovatini (gen. Hydrovatus and 
Queda), Bidessini (gen. lleterhydrus, B achy drus, Besmopachria, Bidessus, “ JTuxel- 
hydrus , and Tyndalhydrus) , and Hyphydrini (gen. Andex, Hydropeplus, Primospes, 
Coelhydrus, Barwinhydrus, and Hyphydrus ) ; an isolated genus, Sternopriscus ; 
another group, Hydroporini (gen. Hyphoporus, Paroster, llerophydrus , Codauibus, 
Chostonectes, Antiporus, Kecterosoma , llacroporus, Beronectes, and llydroporus) ; 
and another isolated genus, Celina. Between the tribe llydroporides and the next 
tribe, Colymbetides, intervenes another isolated genus, Methles. The Colymbetides 
are composed of the groups Agabini (gen. Hydrotrupes, Metronectes, Agabus, Ily- 
biosoma, Platynectes, Leuronectes, Agametrus , Agabinus, Platambus, and I/ybius ) 
and Colymbetini (gen. Scutopterus, Bhantus, Colyvibetes, and Meladema), between 
which are placed the following seven genera, distinguished from both of them by 
negative characters, insufficient to form a natural separate division, viz., Copelatus, 
Aglymbus, Lacconectus, Agabetes , Matus, Coptotomus, and Lancetes. 
Then comes a separate group, Dytiscini (gen. Hyderodes and Bytiscus) , fol- 
lowed by a tribe, Jlydaticides, composed of two groups, Hydatieini (gen. Prodaticus 
and JTydaticus,) and Thermonectini (gen. Acilius, Thermonectes, JEthionectes , 
&and)-acottus, Bhantaticus , and Graphoderes) , and an isolated genus, Ereies. The 
series concludes with another separate group, Cybistrini (gen. Spencerhydrus, 
Homceodytes , Megadytes , and Cybister ). 
In this string of names, there is insufficient material to attempt useful criticism. 
Dr. Sharp’s entomological acumen has been proved too often for any one to doubt 
that Ins earnest and long continued study has justified the, at first sight, unbalanced 
arrangement of tribes, genera, groups, &c. ; and his book will, doubtless, make all 
this clear, even to the swallowing of Amphizoa , after straining in vain at Haliplus. 
As regards the names themselves, it can only be suggested that some of the new ones 
are constructed on the principle of language being given us to conceal our thoughts. 
We are aware, from former communications, that Dr. Sharp does not attribute to 
the construction of mere words, and such minor things, the importance hitherto 
bestowed upon them by his predecessors and fellow-workers ; and it is more than 
probable that the most egregious of the horrors that he now proposes are brought 
forward merely to show his contempt for nomenclators. 
The Youno Naturalist : an illustrated penny weekly Magazine of Natural 
History; conducted by J. E. Robson and S. L. Mosley. Huddersfield: Preston 
Brothers ; London : J. Kempster and Co. Vol. i, 1880. 
To a certain extent, this periodical is based upon the plan of the “ Intelligencer,” 
but extended to all branches of Natural History. It is apparently published both 
in weekly numbers and monthly parts. We have before us part xii, for November, 
1880. 
It appears likely to prove very useful, if care be taken not to identify it with a 
