Page:The Zoologist, 4th series, vol 1 (1897).djvu/484

456 {| In October, 1893, I remarked ('Naturalist,' p. 296) that L. tyrtæus was probably the same as Allolobophora profuga, and now Dr. Ribaucourt supports my suspicion, though he does not amalgamate the two. The accompanying table or chart gives a bird's-eye view of the British species of the genus which will be helpful to collectors: —
 * 1 ||Rubellus ||27 ||28 ||29 ||30 ||31 ||32
 * 2 ||Castaneus || ||28 ||29 ||30 ||31 ||32 ||33
 * 3 ||Melibœus || || ||29 ||30 ||31 ||32 ||33
 * [4 ||Tyrtæus || || || ||30 ||31 ||32 ||33 ||34 ||35]
 * 5 ||Studeri || || || || ||31 ||32 ||33 ||34 ||35 ||36 ||37
 * 6 ||Herculeus || || || || || ||32 ||33 ||34 ||35 ||36 ||37
 * 7 ||Papillosus || || || || || || ||33 ||34 ||35 ||36 ||37 ||(38)
 * 8 ||Festivus || || || || || || || ||34 ||35 ||36 ||37 ||38 ||39
 * }
 * 5 ||Studeri || || || || ||31 ||32 ||33 ||34 ||35 ||36 ||37
 * 6 ||Herculeus || || || || || ||32 ||33 ||34 ||35 ||36 ||37
 * 7 ||Papillosus || || || || || || ||33 ||34 ||35 ||36 ||37 ||(38)
 * 8 ||Festivus || || || || || || || ||34 ||35 ||36 ||37 ||38 ||39
 * }
 * 8 ||Festivus || || || || || || || ||34 ||35 ||36 ||37 ||38 ||39
 * }
 * }

The members of this genus fall more or less naturally into groups, of which the Dendrobæna is the best defined. As a whole the species of this genus may be known by the lip being only partially dovetailed into the 1st segment. There is a curious exception to this rule in A. eiseni, which has the head arrange-