39 197 



The central nervous system had a breadth of 2 mm ; it was of the common 

 form, the roundish pedal ganglia were larger than the pleural ones, which were only little 

 separated from the cerebral ones. — The otocysts which were situated before the short 

 cerebro-pedal connective, had one larger otolith and several small pale ones. 



The buccal tube had a length of 4 mm , and was surrounded by a not strong glan- 

 dular layer. The bulb us pharyngé us was of the common form, 7 mm long, by a 

 breadth and height of 4 - 5 mm ; the upper wall of the buccal cavity was to be seen from 

 without with a deep black colour; the palate is medianly quite slightly rough at the small 

 longitudinal folds; also the tectum radulæ, the cheeks, and the rhaphe of the lower side 

 of the tongue are velvet black. The plate on the fore side of the mandible was as usual ; 

 the transversely folded marginal part of the labial disk was dirtily yellow. The man- 

 dibles measured in a straight line 7 mm ; the single ones had a breadth of 2 - 5 mm ; they 

 were yellow, only the marginal part was strong reddish yellow; the form was as usual, 

 only the hinder end rather tapering; the masticatory edge showed the usual (here about 

 5 — 6) series of tubercles, the oblique cones of a height of up to O08 mm . The tongue 

 was as usual strong and broad; its radula was yellow, tapering anteriorly, and containing 

 22 series of tooth plates, in the sheath 10 more were found, of which the three hindmost 

 ones were not fully developed; thus the total number of series was 32. On either side 

 of the median plate up to 45 lateral ones were found. The plates were yellow; the 

 breadth of the median ones was up to - 16 mm ; the height of the outermost lateral one 

 was (M6 mm , that of the outermost but three from the outer end of the series - 20 mm , 

 and the height increased to - 25 mm . The median plates (fig. 25 a) were of the common 

 form, with a clumsy short median tooth and two similar smaller lateral teeth. The first 

 lateral plate (fig. 25 b) was of the common form deviating from that of the other lateral 

 plates, with a short, strong hook; the other plates were all of the common hook-shape 

 (fig. 26), with smooth edges; the outermost ones were weaker. 



The whitish salivary glands were as usual. 



The oesophagus was short, black next to the pharynx, passing into the first 

 stomach, which, by its contents, was globularly extended (to a diameter of 4 mm ). Behind 

 the first stomach the masticatory stomach is found; it is muscular, formed some- 

 what like an hour-glass, of a diameter of 2'5 mm ; its somewhat larger fore half part showed 

 the common girdle of firm leaves, in situ red yellow, placed lengthwise, and .converging 

 towards the axis of the circle , where they almost join each other. These stiff, yellow 

 leaves (fig. 27) were of different sizes, of a height of up to 0'75 mm , by a length of l"""; 

 their number was about 30—40, and they were of the structure otherwise common in 

 the Marioniae. From the hinder end of the stomach issues the intestine (of a length of 

 7 mm ); its fore part is dilated by similar contents as those of the first stomach. These 



