324 POLLICIPES SPINOSUS. 



nucopia, P. elegahs, and P . polymeries than to P. sertus 

 and P. spinosus. 



In the scuta and terga being articulated together, in 

 the union of all the valves by stiff membrane, in the 

 peculiar manner in which the valves of the lower whorl 

 overlap each other, in the corium entering between some 

 of the valves in filiformed appendages, in the near equality 

 of size of the rostrum and carina, in the shortness of the 

 peduncle in old specimens, in the position of the cement- 

 glands, and lastly in the characters of the third pair of 

 cirri, this species presents a closer affinity to the sessile 

 Cirripedes, more especially to the Chthamalinae, than does 

 any other species of any other genus amongst the Lepa- 

 didse. The movements, however, of the four opercular 

 valves are not at all more independent of the other valves, 

 than in the other Pedunculated Cirripedes ; and the pe- 

 duncle is furnished with all its characteristic muscles. 



5. Pollicipes spinosus. PL VII, fig. 4. 



Anatifa spinosa. Quoy et Gaimarch Voyage de 1' Astrolabe. PI. 

 xciii, fig. 17. 



P. capitulo valvarum uno aut pluribus sub-rostro verti- 

 cittis instructo : laterum pari superiore vice inferioribus 

 longiore : membrand vahas tegente {post desiccationem) 

 subfuscd flavescente : peduncidi squamis inceaualibus, non 

 spnmetricis : verticittis longiuscule distantibus. 



Capitulum with one or more whorls of valves under 

 the rostrum : upper pair of latera only slightly larger than 

 the lower latera : membrane covering the valves (when 

 dried) light yellowish-brown : scales of the peduncle of 

 unequal sizes, unsymmetrical, arranged in rather distant 

 whorls. 



Maxillae, with the edge square and straight: caudal 

 appendages uniarticulate : filamentary appendages, none. 



New Zealand. Mus. Jardhi des Plautes, Paris : Mus. Cuming 



