270 BOPYRID^. 



we have always found that which we consider as the 

 male animal to be free, and roaming distantly from its 

 supposed mate. The cirriped which it infests (Balanus 

 halanoides) is a gregarious species, and lives upon the 

 rocky shore between the tidal marks, and we have fre- 

 quently seen, on breaking off a mass of the Balani, the 

 little red Crustacea run away, and the paucity of the 

 males that we observed in comparison with that of the 

 females, has induced us to consider that the male wanders 

 about from one cirriped to another. The animal is of 

 a red- brown colour, and is an active little creature. 



The female, in its adult state, is a large inert inarticulate 

 mass, destitute of antennae, mandibles, or foot-jaws, legs 

 or branchial appendages, with the body dilated on each 

 side into three large rounded or conical lobes, the tail 

 itself forming a terminal lobe similar to the others. In 

 Dr. Buchholz's specimen the body (probably from having 

 been immersed in spirits) was of a broader and rounder 

 form than in our figure, with the lobes more conical and 

 more regularly radiating, giving the animal more of a 

 star-like appearance. It is furnished with a short mouth 

 or sucker, by which it affixes itself to its prey. 



The young animal, as described by Buchholz, or the 

 male as suggested above, is elongate (luore ovate in 

 Buchholz's figure than in our own), with the head as 

 wide as the following segment, which, as well as the 

 remaining segments of the body (and also of the tail, 

 according to Buchholz), have the lateral margin deflexed, 

 with its posterior margin serrated. The mouth consists 

 of a conical process, protected above by two flattened 

 plates, of which the posterior margin is serrated. The 

 minute pair of upper antennae are affixed at the sides of 

 these appendages, and consist of a strong basal joint, 

 thickly fringed with long setae, and a terminal articulated 



