Pontoscolex. 



Habitat 

 Bin 



NhiiiIiit of somites 



Beta 



Clitellar Beta 

 ( lltellu 



Tabercula-pubertatia 



I'nishiiniiim 



Caudal cone 



Hearts in x i. xii. 



Caleiferons diverticula \ii, viii, ix 



P. Lilljeborgi mihi. 



Antigua, Guatemala, Central America. 



40 mm. by 2 mm. 



164. 



bifid at apex, not ornamented; a and b pa 

 until x inclusive, parallel until xxvii, them e 

 diverging. Seta? c and d paired until \. then 

 d becomes irregularly placed. 



unknown. 



probably xv— xxii. 



J unknown. 

 I 

 very long. 



9 somites from tail end. 140 from head. 



(12 to i< 



Sperm at bees 



Bpernatheeal pores 

 Gixzard in 



Nephroporea 



I in viii, i\, \. sac dike, im narrow duct; pores 



Iin front of posterior septum in same so- 

 mites. Three pairs. 



in line with seta- ,/ and b. 



vi. 



I in line with seta- ,\ most ante 



mucus pure in ii. 



Table of species 



P. corethrurus var. mexi- 

 canus mihi. 



Tepic, -Mexico. 4,000'. 



95 to 111 mm., by 3 mm. 



1 45 to 212. 



slightly bifid, faintly ornamented. Separates 

 ventrally in xii. in \vii have reached their 

 proper distance. In xlii setae b beco- 

 mes irregular. At caudal zone all setae 

 are irregular. Set» d becomes irregular 

 about xii. 



ornamented with S pairs of lunate notches. 



xv to xxiii. 



' xix to \ xxiii elevated ridge in line with or 

 behind set» b. 



prominent, but frequently retracted. 



from end of zone to tail end 28 to 76 somites, 

 from head to zone 107 to 118 somites. 



xi, xii. 



vii. viii, ix. 



the pores in vi, vii. viii. in posterior part of 

 somite, and the pouches in vii. viii. ix; 

 very long duct. Three pairs. 



in line with setas c. 



vi. 



rior one in iv. in line with setae c. 



