DESCRIPTIONS OF GENERA AND SPECIES 721 



(52) Allolobophora fltzingeri, BEDDABD. 



Enterion platyurum, FlTZlNQER, Isis, 1833, p. 552 (in part.). 



Lumbricus terrestris, var. platyurus, OEBLEY, MT. Akad. Math., xvi, 1880, p. 583, 



(in part.). 



Octolasion platyurum, OEBLEY, Ert. termesz. Kb'r., xv, 1885, p. 18 (in part.). 

 A platyura, var. typica, ROSA, Mem. R. Ace. Torino, 1 893, p. 43. 



Definition. Lenyt/t, 1 1 1 mm.; number of segments, 153. Setae distant. Clitellnm, XXF-XXX. 

 Tubercula pubertatis, XXVI-XXFIII, XXIX. Male pores inconspicuous. Spermathtcae 

 in X, XI, opening anteriorly ly seta IV. Hab^ Europe. 







ROSA speaks of two varieties or subspecies typica and depressa. The latter 

 I place, as ROSA was inclined to think should be done, in a distinct species. The 

 worms called 'platyurum' by FITZINGER were found (by WESSELEY) to consist of 

 these two subspecies, to both of which the (imperfect) diagnosis of FITZINGEB applies. 

 The name of A. oerleyi must be applied to the species 'depressa.' Accordingly, 

 I propose to call this worm by the above name. 



Genus LUMBBICUS, EISEN. 



DEFINITION. Prostomium completely divides buccal segment. Setae strictly paired. 



Longer, straighter setae on clitellum. A median seminal reservoir, extending 



through segments X, XI, present, into which open three pairs of sperm-sacs. 



Spermathecae always two pairs in IX and X. 



ROSA recognizes (15, p. 22) eight species of the genus, which form a remarkably 



graduated series, in respect of the segments which bear the tubercula pubertatis. 



I repeat here the table which he gives in illustration of this : 



1. (Variation of 



L. rubellus) . . 27, 28, 29, 30 



2. L. rubellus ... 28, 29, 30, 31 



3. L. caataneus . . . 29, 30, 31, 32 



4. L. meliboeus 30, 31, 32, 33 



5. L. lyrtaeus 31, 32, 33, 34 



6. (Form wanting) (32, 33, 34, 35) 



7. L. herculeus 33. 34. 35. 36 



8. L. papillosus 34, 35, 36, 37 



9. L. festims 35, 36, 37, 38 



10. L. polyphemus 40, 41, 42, 43, 44, 45. 



4 Z 



