38 BULLETIN 93, UNITED STATES NATIONAL MUSEUM. 



VERRUCA ENTOBAPTA, new species. 

 Plate 6, figs. 3, 3a, 36. 



Type.C&t. No. 32924, U.S.N.M. 



Type-locality. Albatross station 2415, east of Fernandina, Florida, 

 north latitude 30 44'; west longitude 79 26', in 440 fathoms, bottom 

 temperature 46.6 F., or station 2416, north latitude 31 26'; west 

 longitude 79 07', in 276 fathoms, bottom temperature 53. 8 F. 



The barnacle is dull red within, tinted with lilac outside, about as 

 wide as long, with the movable plates nearly parallel to the plane 

 of the base. Plates of the wall rather thick, beveled to an obtuse 

 basal edge; their parietal areas with rather weak sculpture of well- 

 spaced grooves roughly parallel to the basal borders. 



The movable scutum has four beaded articular ribs and an upper 

 rib, which is extremely short and narrow, forming the upper margin 

 of the tergal edge of the apex. The rest of the plate has strong flat 

 ribs parted by narrower grooves, parallel to the rostral margin. The 

 acute beak curves upward a little. The inner face is plain, a little 

 excavated near the beak. The movable tergum has a strong diagonal 

 rib and three other articular ribs, the second one from the top a little 

 smaller than the others. The acute beak curves upward. 



The fixed scutum is tripartite, the upper area sunken below the 

 lower and more strongly sculptured. There is a very small radiiform 

 area in the sutural furrow. Inside there is an ample pit for the 

 adductor, its lower border projecting shortly as a thick adductor 

 ridge or low myophore, concave above. The apex of the plate 

 projects strongly. 



The fixed tergum is tripartite externally, the parietal area being 

 strongly raised, beak produced and a trifle recurved. Internally it 

 is calloused. 



The carina and rostrum interlock by teeth which terminate several 

 scaly radial ribs in each valve, the upper rib of the rostrum being the 

 largest. These ribs are flattened, somewhat imbricating upward, 

 and are conspicuously scaly. There are no short curved ribs on the 

 upper edge of the rostrum. 



Carinorostral length of the base, 5 mm.; between the apices, 5.5 

 mm.; diameter of the base, 5 mm.; height of fixed tergum, apex to 

 base, 3.9 mm. 



Cirrus i with rami of 8 and 12 segments, the shorter about two- 

 thirds the length of the longer. Cirrus ii has subequal rami. 



Terminal appendage of 18 long segments, about twice as long as 

 the protopod (pi. 9, fig. 4). 



This species, of which three individuals were taken, stands close 

 to V. calotheca, from which it is readily separable by the deep pit, 

 bounded below by a low adductor ridge or even a narrow myopUore 



