REPORT ON THE CIRRIPEIMA. 



61 



In the first place, I separate those species which have imperfectly calcified valves from 

 those with perfectly calcified ours. Whereas the first division of the genus only contain* 

 at present five species, the latter numbers forty-seven. These may be subdivided by 

 the aid of the form of the carina, viz.: into species with a carina a portion of which 

 projects freely, into species with an angularly Lent carina, and into species with a simply 

 bowed carina. The species with a carina having a portion projecting freely much resemble 

 spc-ies of the genus Po/llcipcs, Leach, and perhaps must he considered as fonnin- 



jf— ^Valves of the 

 Lower Whorl 



I Valves of the 

 Y Lower^.Vhoil 



In both figures a point indicates the place in each valve where the umbo is situated, s, scutum; I. tergum; c, carina; 



id, upper latus : rl, rostral latus ; il, infra median latus; cl, carina] latus; 1, occludent margin of the scutum; 

 2, teigal do.; 3, lateral do.; 4, basal do.; 5, occludent margin of the tergum ; 6, carinal do.; 2, scutal do.; 6, 8, tergal 

 margin of the carina; 3, scutal margin of the upper latin : 7. tergal do.; S, carinal do.; 9, basal do.; 10, rostral 

 margin of the rostral latus ; 11, basal do.; 12, lateral do.; 4, scutal do.; 12, rostral margin of the infra-median latus ; 

 13. carinal do.; 14, basal do.; 13, lateral margin of the carinal latus; 15, basal do.; 16, carinal do.; 9. upper do.; 

 In fig. 1 — r, rostrum. In fig. 2 17, scutal margin of the infra-median latus : is. upper do. 



a link between the two genera. Only two species belong to this division. Eight species 

 have an angularly bent carina, so that by far the greatest number (thirty-seven) belong 

 to that division which contains the species with a bowed carina. Only in one of the 

 living species is a sub-carina present. Of the remaining thirty-six, twenty-one have a 

 rostrum and fifteen have no rostrum. Four of those with a rostrum have the rostrum 



