1866. | The Progress of Zoology. 53 
Besides an important work on the Sctigerous Annelids, by Ernst 
Ehlers, which 1s in course of publication at Leipzig, several interest- 
ing and important papers by Baird, Kolliker, Van Beneden, and 
others, indicate that this somewhat neglected department is making 
progress. Kolliker finds numerous sensory organs upon the in- 
tegument of certain Polycheta, in the form of variously shaped 
hairs and papille, to which nerves are supplied which subserve to 
tactile functions ; and Semper takes note of similar tactile bodies in 
the form of horny-toothed rings connected with vesicular arrange- 
ments surrounding nerves in Sipunculi. 
Dr. Cobbold chronicles the Helminths, a subject which, from its 
human interest, obtains a considerable share of notice. Dr. Cob- 
bold’s own excellent treatise is the first original work on Helminths 
which has issued from the English press, and contains a valuable 
bibhography of the subject. The Germans are the chief students of 
Entozoa, and a great work by Rudolf Leuckart on human parasites. 
is now in course of publication. Besides these, Friedrich Mosler, 
Virchow, Althaus, Diesing, and others have contributed important 
additions to this department of Zoology. 
Lastly, the Echinodermata again call forth Mr. Reay Greene. 
Under this head the researches of A. Agassiz on the Embryology of 
Echinoderms, and of Sars upon similar subjects, which beng made 
entirely independently, yet well confirm one another, are worthy of 
especial notice. With regard to the grade of development, it is 
remarked that on Embryological grounds the Asterids with suckers 
rank above those with tentaculiform feet; those with four rows of 
suckers, above those with only two; those with complicated spines 
and plates, above those with smooth arms; and lastly, those with 
elongated arms, above starfishes whose outline is pentagonal. 
~ Here, we regret to say, we must close this chronicle. We 
heartily sympathize with Dr. Gimther in his disappointment, that 
the gentleman to whom were entrusted the Coelenterata and Pro- 
tozoa failed to keep his engagement; and that since this did not 
become apparent until after two months’ waiting, it was then too 
late to find a substitute. The consequence, of course, is that this 
first volume of the ‘ Zoological Record’ is incomplete. As far as 
possible the deficiency will be made up in the following year, but 
everyone must regret the fact. In conclusion, we are glad to bear 
our testimony to the extreme value of the volume before us, and we 
trust that the substantial encouragement given to it by the sale of 
this edition, will induce the editor to continue his useful labours, 
since any Zoologist who has come into possession of such a treasure 
would sadly miss it if it were not forthcoming in future. 
