49° 



C. A. NILSSON-CANTELL 



Complementary description: This litoral species — one of the largest 

 known balanids — is represented in the material by a single small specimen. 

 This young individual was situated on a floating specimen oi L. anatifera mih 

 the base on both umbones of the scuta. As regards the external characters 

 the species is well known. This little individual has a conical, rather elongated 

 shell. It is pale pink coloured. 



Fig. 3. Balanus psiitacus (Molina). 

 a labrum; b mandible; c maxilla I; d maxilla II. 



The opercular plates are very typical. Without studying them it was 

 not possible to determine this individual only from the shell, as it is not 

 fullgrown. 



The scutum has on the inside the very typical cavity at the basitergal 

 corner. 



The tergum is narrow, with a beak, not so long as in the fullgrown spe- 

 cimens. Inside there are no crests as is stated in the originally description. 



