442 



PART II. SYSTEMATIC ACCOUNT 



0.2 мм 



\wp 



—pan 



0.02 мм 



Fig. E169. Lamellisabella minuta: A - the girdles from the dorsal, and B, from the ventral side; 

 С - part of a girdle ; D - toothed platelet from the side ; E - plaques from a postannular papilla. 

 an - girdles ; da - anterior teeth ; dp - posterior teeth ; p - plaque ; pa - papillae ; pan - postannular 

 region ; v - ventral papilla behind the girdles. 



I have measured the different parts of the body in the two almost complete 

 specimens (only the hindmost end of the postannular region is missing), and 

 obtained the following results (mm) : 



Length of tentacles 

 Length of the fore-part of the body 

 Breadth of mesosoma 

 Length of the metameric region 

 Length of the nonmetameric region 

 Overall length of preannular section 

 Length of surviving fraction of 

 postannular section 



22-0 



7-5 



The second individual is considerably smaller than the first and may 

 possibly be a juvenile. This is most strikingly suggested by the under- 

 developed preannular region, which is only a third as long as that of the 





