108 BULLETIN 60, UNITED STATES NATIONAL MUSEUM. 



radial ribs on the movable scutum, exclusive of the articular ribs, and 

 the second articular rib of the movable ter^um is nearly as large as 

 the others. In other characters, especially in the convex scutum, it 

 agrees with the tj^pe-specimen. 



In a number of examples of V. nexa Darwin which I have examined, 

 the movable scutum is flat, and the articular ribs and interlocking teeth 

 of carina and rostrum are more numerous and subequal. Probably 

 Y. n. alha might better be considered a distinct species; yet with only 

 two examples T prefer to rank it as a subspecies. 'The produced beaks 

 of the fixed scutum and tergum, densely marked with growth-lines, 

 give reason for believing the individuals quite adult. The shell is 

 white, like most other Verrucas, not ruddy like all of the Y. nexa I 

 have seen. 



VERRUCA EUGLYPTA, new species. 

 Plate X, figs. 1, 2, 3. 



Type.—Q2X. No. 32906, U.vS.N.M. 



Type-locality. — Alhatross Station 2415, ofl' South Carolina, latitude 

 390 44' north, longitude 79^-^ 26' west, in ■440 fathoms, bottom temper- 

 ature 45.6^ F. 



The shell is cream-white, seated transversely upon a branch of Ocu- 

 lina-like coral, much narrower than the barnacle, the base of which is 

 consequentl}^ contracted, the end walls overhanging. The scuto-tergal 

 wall is vertical, the rostro-carinal wall slopes steeply. The movable 

 scutum and tergum lie at an angle of about 45° with the plane of the 

 base. All of the plates are very deeply and closely sculptured with 

 riblets in the direction of growth-lines, wider than the intervening 

 furrows. 



The movable scutum is subtriangular, curved, with the surface 

 divided into two areas. The larger occludent area is sculptured with 

 transverse riblets, the smaller area with four arcuate articular ridges. 

 The first ridge is smooth, and about one-third the length of the plate; 

 the other ridges are cut by the transverse riblets, the second articular 

 ridge being narrowest and not reaching quite to the apex; hence a 

 quite young individual would have but three articular ridges. The 

 furrows between the ridges are smooth. 



The movable tergum is much larger than the scutum, (quadrangular, 

 the occludent margin somewhat shorter than the basal and parallel to 

 it, the carinal margin slightl}' arcuate, the articular margin coarsely 

 zigzag. The surface i« divided into two nearly equal areas by the 

 slightly curved diagonal last articular ridge, the area below it being 

 depressed, flat, and marked with transverse riblets onl3^ There are 

 four articular ridges, the third narrowest, the fourth widest and in 

 strong relief. All are sculptured with the transverse riblets, but on 

 the first ridge they are very low, tine and, delicate, and arch down- 



