174 CIRR1PEDIA. 



FAMILY II. VERRUCAD^E. 



Verruca (Schumacher). Opercular valves not 

 furnished with depressor muscles, united immove- 

 ably on one side with the shell-valves into an 

 unsymmetrical shell. 



V. Stromia. Fig. 325 ; n. s. 



FAMILY III. LEPADID.E. 



Lepas (Linn.). Valves five, approaching ; carina 

 extending up between the terga, terminating down- 

 wards in an imbedded fork, or in an external 

 disk ; scuta sub-triangular, with their beaks at the 

 rostral angle. 



L. anatifera. Fig. 326 ; n. s. (one-half of the carapace 

 Hillii. removed.) 



pectinata. 

 fascicularis/ 



Conchoderma (Olfers). Valves two to five, mi- 

 nute, remote ; scuta with two or three lobes, with 

 the beaks in the middle of the occludent margin ; 

 carina arched, upper and lower ends nearly alike. 



0. aurita. 



virgata. Fig. 327 ; n. s. 



Anelasma (Darwin). Without valves ; aperture 

 large ; peduncle fringed, sub-globular, imbedded. 



A. squalicola (on Sharks). Fig. 328 ; n. s. 



Alcippe (Hancock). Without valves ; aperture 

 spinous; peduncle growing at the base; rostral 

 surface depressed and covered by a horny disk ; 





