PL ATK XVII. 



Fin. 



1. PKKIGONIMUS SESSILIS, p. 93, magnified. 



1 a. A single polypi tc, more highly magnified. After Dr. 

 Strethill Wright. 



2. PERIGONIMUS PALLIATUS, p. 93, magnified. After Dr. 



Strethill Wright. 



3. PERIGONIMUS (?) LINEARIS, p. 96, nat. size. 



3 a. The same, magnified. 3 b. The gonozooid. After 

 Alder. 



4. PERIGONIMUS REPENS (young), p. 90, magnified. From 



a drawing by Mr. Alder. 



