6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 9I 



These cords are equal in strength and are separated by spaces almost 

 twice as wide as the cords. There is a moderately strong cord a little 

 anterior to the appressed summit on all the whorls. The finer spiral 

 sculpture consists of lirations which occur in the spaces between the 

 stronger cords. Three of these are present in the space between the 

 cord anterior to the summit and the summit. The posterior sinal 

 region is marked by 4 lirations upon the first whorl, 6 upon the sec- 

 ond, 8 upon the third, 14 upon the fourth, 20 upon the fifth, and 22 

 upon the last. Between the cords which pass over the axial ribs, four 

 lirations are present on the second whorl, while on the third whorl 

 two are present between the first and second cords, and four between 

 the second and third. On the fourth whorl four occur between the 

 first and second cords, and nine between the second and third. The 

 fifth whorl has four lirations between the first and second cords, nine 

 between the second and third, and five between the third and the 

 suture. The junction of the spiral lirations and the incremental lines 

 gives to the shell a granulose aspect. Periphery of the last whorl 

 rounded. Base rounded, moderately short, marked by the continua- 

 tion of the axial ribs and three spiral cords which are not quite as 

 strong as those on the spire. The space between the first cord posterior 

 to the suture and the first basal cord is marked by 10 spiral lirations. 

 The space between the first and second cords is marked by seven lira- 

 tions and between the second and third by eight. Columella stout, 

 moderately short, marked by eight spiral cords equal in strength to 

 those on the base. Between the last basal and first columellar cord 

 nine lirations are present. Seven occur between the first and second 

 columellar cords, five between the second and third and third and 

 fourth, and three between the fourth and fifth. Aperture moderately 

 long, deeply channeled anteriorly and posteriorly, the posterior sinus 

 being a little anterior to the summit. The outer lip is protracted into 

 a clawlike element between the anterior limit of the posterior sinus 

 and the stromboid notch. There is a heavy varix a quarter of a turn 

 behind the outer lip. The inner lip is reflected over the columella as 

 a heavy callus which extends over the parietal wall and forms a shelf 

 over the posterior sinus at its junction with the outer lip. 



Type. — U.S.N.M. no. 430993, collected at station 26 in 30 to 40 

 fathoms between latitude i8°3o'2o" N., longitude 66°22'o5" W. and 

 latitude i8°3o'3o" N., longitude 66°23'o5" W, It has 8.3 whorls and 

 measures : Length, 10.4 mm ; greater diameter, 4.3 mm. 



