174 16 



diameter of I™™, the duet being twice the length of the bladder 1 ). — The bag of the 

 penis had a length of 5™™ by a diameter at the upper end of J^ 1 ™, and was tapering 

 anteriorly; the anterior half was black pigmented; at the hinder end a strong retractor 

 (fig. 11 a) was attached, and below the middle another one. The inside is also black 

 dotted, and shows fine longitudinal folds, among which one stronger than the others con- 

 tinues to the conical glans that has a length of (HO 11 ™. At least the base of the glans 

 as also the top of the praeputium show close standing, soft cones (fig. 38) of a height of 

 up to 0"2 mm . (No chitinous covering was found). 



A later obtained specimen, taken Dcbr. 30 th 1900 on the coast of Lem Ngob had 

 a length of IS™™, by a height and breadth of up to 7°™; the gill-slit had a length of 

 2'5 nm , the height of the dorsal tufts was up to 4 mm , the breadth of the sole of the foot 

 was almost 4 , 5 mm . The colour was as above. 



The form as above, the only difference being that as well the tentacles as the 

 rhinophores (fig. 33) were highly provided with tufts; the number of the series of the dorsal 

 tufts seemed smaller (3 — 4), and the tufts (fig. 32) were much more complicated. The length 

 of the gill-cavity was 6°™, the gill was o™™ long by a height of 2 - 5 mm ; the anal papilla 

 which was also bent anteriorly, had a length of 2 mm ; the vulvar papilla scarcely projecting, 

 with a simple slit. 



The bulbus pharyngeus of a length of 2 - 5 mm , quite as above, as also the 

 palatal hooks and the yellow^ mandible-plates. The tongue showed 15 series of tooth- 

 plates, in the sheath were found 7 fully developed ones and three not fully developed; 

 thus the total number of the series was 25. In the series, on either side of the median 

 plate, up to 19 lateral plates were seen. The median plates did not quite correspond with 

 those of the other specimen; their legs were less widely spread, and so the breadth was 

 only 0'16 mm ; on either side of the hook only one denticle was found, and outside the hook 

 three denticles were seen (fig. 7). The first lateral plate had on the outside three den- 

 ticles ifig. 7). The form of the outermost tooth-plate was very much varying (fig. 8), its 

 height .was - 02— 0-04™™, the next one was already , 07 mm high, and the following (VIO™ 111 . 

 The two outermost ones had no denticle, the third showed an indication of such a one, 

 and the ninth or tenth (counted from the outside) had two denticles. 



The oesophagus of a length of 3 mm . The stomach as above, the diameter of the 

 masticatory stomach 2 - o mm . 



') The anterior genital mass appears to be very similar to that of Notavchus punctatus, as shown by 

 Guiart (Gasterop. opisthobr. Mëm. de la soc. zoolog, de France. XIV. 1901. p. 155, Fig. 95). 



