NEW SPECIES OF LFMBEICUS. 313 



times approacMng the preceding, at other times becoming quite 

 diminutive. The girdle is situated ou segments 28 to 33, the 

 iuhercula pubertatis forming th.e usual band on segments 29 to 32. 

 The first dorsal pore is between 6 and 7. This, like the last, may 

 often be found in certain localities with a very short tail, so that 

 the girdle appears right in the middle of the body. The male 

 pore may sometimes be distinguished, though there are no papillae. 

 It breeds freely under clots of dung in pastures, and is a most 

 valuable scavenger. It is as widely distributed as the last. 



Though Eisen gave it the nauie which it now bears in 1870, it 

 was already known to science, having been described in 1829, 

 and known as Enterion castaneum^ Savigny, or L. castaneus, 

 Duges, on account of its chestuut colour. So far as my researclies 

 have gone this species occurs at a greater altitude in Great Britain 

 than either of the other three species. It is usually a good deal 

 larger south of the Thames than north of the Solway. 



The Continental Luonbricus meliboeus, Eosa, has not yet been 

 found in Great Britain; of Lumhriciis caucasicus, Kulagin, reported 

 to occur in South Eussia, I know nothing. Lumhricus Eiseni, 

 Levinsen, as I have shown elsewhere, is an aberrant species, and 

 though found in several places in England, is more naturally 

 ranked with the Dendrobaenas. These are the only species which, 

 at present claim to be genuine European Lumbrici, so that out 

 of the six possible species four are indigenous to this Island, one 

 of which appears so far to be peculiar to Britain. 



The following table (p. 314) will give a bird's-eye view of the 

 genus so far as our present knowledge goes. 



A Revised Synonymy of British Worms. 



Lumbricus agilis, Hoffm. = Allurus tetraedrus, Eisen. 



„ agricola, Hoffm. = Lumbricus terrestris, Linn. 



„ amphisbtena, Dugh = Allunis amphisbffina {Duges). 



r, , r Allolobophora turgida, Eisen. 



„ anatomicus, Gruoe = i '^ ° 



I AiloJobopliora mucosa, Eisen. 



„ anatomicus, Duges = Allolobophora riparia, Hoffm. 



„ annularis. Temp. = Allolobophora fcetida, Eisen. 



,, Qfilisnosus, Duges =1 »m i , i „ 



TT JT t Allolobophora mucosa, Eisen. 



„ carneus, Hojjm. = J 



„ chloroticus, Grtile = AUolobophoi-a riparia, Hoffm. 



„ ciliatus. Milller = Valla ciliata, Johnston. 



„ castaneus, Sav. = Lumbricus purpureus, Eise7i. 



TT jp f Allolobophora mucosa, Eisen. 



„ communis, Hoffm. = < '^ ' 



I AJlolobophora turgida, Eisen. 



