MAT] CAST! ROPODA 



I eight ol Flu dorsal margin projected, about in 



.mil appeared to have been covered with branchial t nit ^ . resembling 



onlj a few i i bigh) remnants of these tufts wi The sides ol 



.'■ •.■iii.i, rather high, and, on account of the projecting dorsal margin, a little 



: inward; in front the genital papilla \\as found in the common place as in Tritonia, 



stretched forth; a little before the beginning of the last third of the length 



•iHwh.tt upward the anal papilla was seen projecting r.v ; about midway between 



:it.il papilla the minute renal aperture was seen. The- foot is powerful; its fore end 



I, with a slight marginal furrow; the foot-brim of a breadth "f up to V""'; the hack 



and ' seed quite to the ]>< >int. 



Tlu ' cavity reached to the beginning of the last fourth of the length of the body. 



The whil d) central nervous system (fig. 12) showed the cerebro-pleural ganglia 



undish, connected with a quite short commissure, with no distinct bordering between the two 

 parts; the pedal ganglia scarcely smaller than the former, of an oval contour; the lower commissures 

 rath 12 d). The buccal ganglia were of an oval contour, connected bj a commissure, al- 



times the length of the ganglion (fig. 12 e). 

 Tin were situated behind the pleuro-pedal connective (figs. 12, 13) between the 



. they had a diameter of o-i.| , and contained a few (ca.10) clear, round, and oval otoconia ol 

 a diamet ; . The skin had no larger spicules. 



The bulbus pharyngeus wa^ large and powerful, somewhat resembling that in Tritonia, 

 long by .1 height and breadth of 5' : . In front it is (fig. 1 p somewhat narrower, and 

 most on the upper side it is higher (on account of the hinge-part of the mandibles); behind this 

 ecting part the wide pharynx is found, and behind this the short and broad radula sheath (fig. 1 \<; 

 the margin of the upper side corresponds to the outer margin of the mandible, and below this (above 

 ride of the bulbus pharyngeus) a hollowing was seen. The labial disk is narrow; behind and 

 found, quite as in Tritonia, the powerful muscular plate resting on the fort side of 

 the mandibles. These latter (fi^ r s. 14—171 an- of a light amber-colour , 5 - 5 mm long by a breadth of 

 the hinder end of 2-25"""; the height of the convexity about z m ; they were rather thin, 

 the hinge-part thick, thinner as well as lighter in the outer hinder half (fig 17). The some- 

 what upwardly directed hinge-part is more narrow, the hinder end broader and emarginate in the 

 midi masticatory continuation was completely wanting, and the masticatory edge was 



diont its whole length (fig. 171. The cheeks join the inside of the mandibles in 

 their wl jth; only foremost in the little mouth-cavity a short stretch (fig. 1 p of the hinge-part 



the mandibles is uncovered. The mouth cavity is almost quite filled out by the (highly contracted) 

 tongue (figs ;|, [8), the middle part of which is through its whole length 

 d by the light yellowish, ratheJ bio. id radula, which farthest back continues in the 

 heath I25 long, 4-5 rao broad) (fig. i.p. The tongue has 21 series of teeth, 

 1 which were not yet fully developed. Thus the total numbei 

 The number of tooth-plates on either side of the median tooth rose to 

 light yellowish colour. The length of the median tooth-plates (on the hind 



