NO. 5 



A NEW BARNACLE FROM ECUADOR 



229 



Labrum : Fig. 1 : B. There is a V-shaped notch in the middle of the 

 labrum, with three teeth on one side, and two on the other. The outline 

 of the labrum is about the same as that found in many species of Balanus, 

 and the teeth are the same shape, and are arranged in the same way as 

 those of B. amphitrite. 



Cirri: Fig. 1 : D. Cirrus I has rami of 22 and 9 segments; the lower 

 segments are protuberant. Cirrus II has 9 and 12 spines. Cirrus III has 

 13 and 11 segments; several of the lower segments on the inner part are 

 thickly set with short, conic, decurved teeth. On the outside of the 

 posterior cirri there is one upward-pointing tooth on each of the lower 

 segments. These teeth are near the tuft of fine spines at the upper angle. 

 Cirrus VI has 28 and 28 segments. The median segments bear five pairs 

 of spines. 



Penis: The penis is longer than the sixth cirrus, and there is a point 

 on its dorsal base. 



Type: U.S.N.M. no. 80026. 



Type locality : Puna Island, Ecuador. 



