22 OUGOCHAETA, 



Habitat (in locis arenaceis; Hoifm.) — Runsala; Ylane. 



cc. Setae se invicem spatiis aequalibus 1. fere aequalibus distantes, 

 dorsales, laterales et ventrales. Processiis lobi ceplialici segmentum buecale 

 ex parte tantum flndit. 



L. piiter, Hoffm. Corpus angulare in tdramque extremitatetn 

 aliquantulum attemmtum, mit totum badium aut. exceptis dor so partis 

 ante cingulum lineaque in medio dorsi elevata hadiis, pallidtim. Lobus 

 eephalicus parvus truncatus; processus laftis, dimddiain segmenti bueca- 

 lis findit; infra suleo nulla. Cingulum, conspicuum\ papillaruni paria 

 ij iiiterduni conspicua; aut XXVI— XXXI, XXXII, atd XXIX — XXXm, 

 XXXIV, aut rariiis XXVU— XXXII. XXXIII; segmenta rj vel vij [rar. 

 vj eomplectitur, Segmentum anale penultimo longitis, Segmenta prae- 

 eingularia bi-, j>ost-eingtdaria triannnlafa. Setae prominentes verniem 

 reddunt quasi oetanqularem. — In aquosis oeeurerunt individua quorum 

 cingula^- segmenta XXIX—XXXIII, XXXIV [rarius XXVII— XXXII 

 XXXIII] conplexa sunt; papillarum paribus ij eonspieuis, nutneroque 

 segmentorum Ixxviij — ev; longit. 45 m. m.. [12-|--3,5-|-20; 14-j-3-|-28]. — 

 In arboribus truncisque ptitridis, sub eortice Tiltae rivae indiridna' legi 

 quorunn cingula XXVI— XXXI, XXXII; papillae inconspiouae; numerus 

 segmentorum. cxlij; longit, 33 ,r, m, m.. [8-j-3,5-|-22]. 



Synon. Enterion octaedrmn, SaVigny-Cuvier ill [nonHoffnieister]. 

 Lumbricus puter Hoffmeister [?] Eegenw. 33; (pieter^ d'lJdekem, 



Lombricins 41; Gnibe 99 k 145; Eisen 959. 

 Lumbricusfputor, G. Johnston 62. 



Habitat (vide supra). — Abo, Reso, Helsingfors, Mant- 

 sala; Parikkala (J. Sahlberg). 



Obs ! It appears strange to me that HofPmeister has found 

 »die Borstenpaare mehr genahert, als bei der vorigen Art (L. 

 oHdus)». — In this species as well as in the L. olidus the 

 back is often highly ridged which is especially perceptible in 

 specimens put up in spirit. 



b. Tubercula ventralia in xm corporis segmento. 



L. tetraSdrus, Sav. Corpus praesertim, postice, quadr angulare; 

 antrorsum paulhduni, retrorsum magis attenuatum, eoncolor, flavidum- 

 badium. Lobus eephalicus parvus pellueidus, segmento buccali brevior; 

 processus brevis, angustus, dim%d,iam L trientem segmenti buccalis fin- 

 dit; infra stdco longitudinali nulla. Cingulum aliquantum prominens; 

 XXI, XXII— XXV, XXVI, XXVII; utroqtie latere sulco longltudmaU 

 terminatum. Setae pier paria paulhdu/m appiroximatae, par siipei-ins la- 

 tera-dorsale, tinde habitus animalis quadr angtdaris. Segmenta Ix—lxxx; 

 seqmentiim anale praeanali parumt langius. Long. 23 — 28,5 m. m. 

 [70 m. m.sec. Hoffm.] - /■6+2+15; 7,5+3+18,- 8+2.5+17; 7+2+15,5.7 



Synon. Enterion teti'aedrum, Sa^^g■ny-Cuvier 111. 



Lnmbricus agilis, Hoffmeister 1843 p. 191; Regenw. 36; d'Udekem, 



Lombrieins 42. 

 Lnmbricx;s tetraedrus, Grube 99 & 145; Eisen 967; G. Johnston 61. 



