DESCRIPTIONS OF GENERA AND SPECIES 721 



(53) AUolobopliora fltzingeri, Beddakd. 



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



Lumbrious terrestris, var. platyurus, Oeeley, MT. Akad. Math., xvi, 1880, p. 583, 



(in part.). 

 Oetolasion platyurum, Oeeley, Ert. termesz. Kbr., xv, 1885, p. 18 (in part.). 

 A platyura, var. typica, Rosa, Mem. R. Aco. Torino, 1893, p. 43. 



Definition. Length, 11 \ mm.; numher of segments, i^'^. Setae distant. Clitellnm, XXF-XXX. 

 Tubercula puhertatis, XXFI-XXFIII, XXIX. Male pores inconspiouous. Bpermatliecae 

 in X, XI, opening anteriorly ly seta IF. Hah. — 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 Fitzingee were found (by Wesseley) to consist of 

 these two subspecies, to hoth of which the (imperfect) diagnosis of Fitzingee 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. 



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

 Longer, straighter setae on elitellum. 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 beai" the tubercula pubertatis. 

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



1. (Variation of 



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



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



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



4. L. meliboeus 3°. 3ii 32, 33 



5. L. tyrtaeus 3Ij 32, 33) 34 



6. (Form wanting) ' (32, 33, 34, 3S) 



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



8. L. papillosus 34, 3Si 36, 37 



9. L. festivus 35; 3^, 37; 3° 



10. L. polyphemus 4°; 41, 42; 43; 44, 45- 



4Z 



