— 92 —— 
FH. nemoralis. p. 164. „Ihe two mucous glands (fig. ı) spring from the vagina close to its 
junction with the dart-sac, each generally dividing rather low down into two or more branches. The 
total number of coeca — in both groups together — is usually 5 or 6, sometimes 4 or 7, more rarely 
so few as three, or so many as nine. I have found the most common arrangement to be as represented 
in fig. ı two branches to one gland and three to the other. Each coecum is slender and nearly cylindrical, 
white, or with a tinge of pink. It will be necessary to revert to these particulars when we come to A. 
hortensis.“ 
AsHrorp hält mit anderen Autoren die Form des Pfeiles für entscheidend, wenn es sich 
in zweifelhaften Fällen darum handelt, festzustellen, ob ein Tier zu Z. nemoralis oder hortensis 
gehört. 
„But what if the dart be not forthcoming? We must fall back upon the mucous glands. And, 
variable as these organs confessedly are, we may in some cases arrive at a reliable decision, if we 
regard their total aspect — the resultant, so to say, of their length, mode of ramification, number of 
branches, form, colour, and texture.“ 
„I received through the kindness of Mr. W. JEFFERY of Chichester, a batch of very suspicious 
looking shells — large, yellow, bandless, darkmouthed, with coloured inner lip. The darts proved them to 
be a variety of H. hortensis, and the mucous glands were in accord.“ 
„Shells with various shades of lip are rather common round Christchurch, and I have carefully 
examined about ı5o. Many of them could scarcely be called doubtful, even at first sight. Moreover 
they were taken from the hortensis colony where FH. nemoralis in its typical form does not occur. I. was 
not surprised therefore to find every case — where the test of dart-form was available — referable to the 
present species. The following tabular statement, arrived at from an average of fifty members of each 
kind, shows how far the mucous glands of the variety just referred to (var. hybrida of authors) afforded 
indication of affinity to hortensis in regard to the two more variable items of length of gland and 
member of branches: 
H. nemoralis length ı6,4 mm, total No. of branches 5,49 
H. hortensis „0 29.401, en % 8,4 
Variety „ 2 1,9 ” ” ” ” ” 8,7 5 
Die Asmrorpschen Abbildungen habe ich auf Taf. II, Fig. 10, ıı, 21 und 22 dem Leser 
in Kopien zugänglich gemacht. 
Beschreibungen und Abbildungen sind durchaus zutreffend. 
Im Jahre 1891 soll Brancsır den Genitalapparat von 77. hortensis beschrieben und abge- 
bildet haben. Der betreffende Band der Zeitschrift ist mir nicht zugänglich. Wenn die Ab- 
bildung nicht besser ist als jene prähistorisch-primitiven Figuren, die ich im Jahrgang XIV—XV 
derselben Zeitschrift von demselben Verfasser vom Geschlechtsapparat anderer Helices gesehen, 
so ist sie gänzlich wertlos. 
Im Jahre 1892 hebt H. v. JHmerıngG zum erstenmal in prägnanter Weise die anatomische 
Zusammengehörigkeit der Arten der 7achea-Gruppe hervor, ohne Beschreibungen von 7! hortensis 
und zemoralis zu geben. 
Die Angaben von Orro SCHUBERTH (1892) über den Genitalapparat unserer beiden 
Formen sind belanglos.. Keine Abbildungen! 
Von den 2 Glandulae mucosae von ZZ. nemoralıs sagt PıLspry (1894): 
„Mucous glands two, inserted on opposite sides of vagina immediately above dart sack, each sub- 
divided into several long slender cylindrical finger-like caeca.“ 
Ueber den Unterschied in den Glandulae mucosae zwischen korzensis und nemoralis schreibt 
mir Hesse: 
