ZooL.— Vol. II.] EISEN—OLIGOCHMTA. 211 



Su-prafharyngeal Glands. — When seen in a longitudinal 

 section passing through the centre of the body, the posterior 

 lobe is much thicker than the three anterior lobes. There 

 are only four lobes in all, as usual diminishing in size for- 

 wards. These lobes are much shorter than in the var. 

 fahnicola. Small septal glands are present in VIII, IX, X, 

 XI and XII, situated close to the intestine. 



Intestine. — The pharynx is furnished with a long dorsal 

 pocket below the suprapharyngeal glands. The sense-organ 

 zone in the palate is much smaller than in var. palmtcola. 

 In the specimens sectioned the gizzards are short and thick, 

 much more so than in the other varieties. The sacculated 

 intestine commences in XIX, as in var. falmicola, but in 

 B. Bolavi it commences in XXI. 



The tyfhlosole is either very small or absent. In longi- 

 tudinal sections it did not show distinctly. 



The calciferous diverticles resemble those of var. -pahni- 

 cola in every particular. I have re-examined my sections 

 of the latter form and find that in this, also, the two anterior 

 diverticles on either side are connected in such a manner 

 that they appear as a single diverticle extending through 

 somites XV and XVI. The diverticle in XV does not have 

 a separate connection with the intestine, but is simply an 

 anterior lobe or projection of the diverticle in XVI. 



Spei'matheccB. — The basal part is much wider than in the 

 other varieties, and the diverticle is more stalked. The 

 size of the basal and apical parts is much greater than in 

 either B . Bolavi or the var. pahnicola . 



The prostates are upright and the glandular part is folded 

 on itself, reaching down below the beginning of the narrow 

 muscular duct. 



The hearts are less pronounced and much narrower than 

 in the var. pahnicola. The last pair is in XIII. The one 

 in XII is much the largest. 



