1895.] mi. F. E. liEDDABD ON NEW EARTHWOUMS. 2lo 



The spermiducal glands are small and narrow; they are confined 

 to their respective segments (the xviith and xixth), and lie trans- 

 versaly to the long axis of the body. The penial sette with which 

 they are provided are slender and unoj-namented. 



The spermathecae are like those of many species of Pcriclui'ta m 

 the narrow tubular appendix, wtiich is of tlie same length as the 

 pouch. The diverticulum ends in a small dilatation. 



Bah. St. 7, Valparaiso, Salto ; St. 12, Valparaiso, Garten. 



(3) Acanthodrilus magellanicus, n. sp. 



There were several specimens of this species, of which the one 

 selected for measurement was 66 mra. long a;jd3-5 mm. in diameter; 

 it consisted of nearly 100 segments. 



The colour after preservation was a yellowish grey, owing to the 

 absence of integumental pigment. 



The setse are not strictly paired ; the ventral setae are nearer 

 together than the lateral sette ; but in the posterior i)art of the 

 body there was less difference in the distance between the setae. 

 The clitellnm occupies segments xiii.-xvii. 



On segment xi. are a pair of large genital papillae. On the 

 middle of segments xiv. and xv. is a narrow band of glandular 

 appearance ; finally, the pores of the spemiducal glands are situated 

 upon large oval papillae united nearly or completely in the middle 

 line ; they also bulge over the intervening segment so as to 

 nearly obliterate it. 



Corresponding to the position of the ventral setae on segments 

 xvii. and xix. are the apertures of the spermiducal glands. When 

 this part of the body is mounted entire in glvcerine and examined, 

 the summit of each of the four papillae already referred to is seen 

 to be perforated by three orifices. One is the actual pore of the 

 gla)id ; the two others each correspond to one of the two penial 

 setae which accompany the glands ; it is not common for the setae 

 to open thiLS independently of the glands. The orifices are pre- 

 cisely similar in appearance and are of equal size. 



This species has a well-marked gizzard in segment vi. The 

 septa separating segments vi./xii. are stout ; the first septum lies 

 between segments v./vi. The last heart is in segment xii. 



The funnels of the sperm-ducts lie in segments x., xi. ; the 

 racemose sperm-sacs are in xi., xii. 



The two pairs of spermathecae lie as usual in viii., ix. ; the 

 pouch itself is oval, and it communicates with the exterior by a 

 long cylindrical duct, which is not very much narrower but is 

 rather longer. Just before the external orifice of the latter are 

 two caeca, w-hich really open by a common pore ; they lie one above 

 the other, and not laterally and symmetrically as in Acanthodrilus 

 bovei. The two caeca are enveloped in a common sheath, but they 

 are divided by a constriction superficially, which marks a real 

 muscular septum which separates the two diverticula. 'J he lower 

 one is globular in form ; the upper, which is larger, is more 

 elongate. 



