88 THE NAUTILUS. 



Passing to the outer harbor there is a slight change. More species 

 of Bela, for example. Here I met a surprise in finding a third 

 colony of Turhonilla. As the outer harbor is practically open sea, 

 the occurrence is unusual. In fact the only locality known to me 

 north of Cape Cod where that form occurs save in inner waters. 

 So much ground remains to be examined that this report must be 

 imperfect, yet the area covered showed Astarte very scarce. Thya- 

 sira lacking, and some other forms expected did not appear. I am 

 told that there are small beds of them in places not yet dredged. 



A few years ago the writer was stationed near New Haven. At 

 that time I received much help from Dr. Bush, and together we 

 examined many specimens of Turbom'lla, Odostomia, Bela and other 

 genera. It is my desire to recognize my high appreciation for her 

 kind help by naming the following species for her. I am confronted 

 with the fact that one Odostomia already bears her name. Not to be 

 defeated in my purpose, I will use her first name, and am sure she 

 will pardon me this time. 



Odostomia (^Evaliiui) katherina, new species. 



Shell much smaller than 0. (B.) winkleyi, bluish-white, semi- 

 translucent. Nuclear whorls deeply obliquely immersed in the fifrst 

 of the succeeding turns, above which the tilted edge of the last volu- 

 tion only projects. Post-nuclear whorls well rounded, with a very 

 strong beveled shoulder, marked by many very slender axial threads 

 and a number of fine spiral lirations, of which one is at the angle of 

 the shoulder, one on the shoulder a little nearer the suture than the 

 angle; one forms the weak peripheral angle, and six others divide the 

 space between the peripheral angle and the angle at the shoulder 

 into subequal spaces. Sutures strongly constricted. Base short, 

 well rounded, marked by spiral threads, of which the second one 

 below the periphery is as strong as the peripheral one, the other four 

 being of equal strength; the two basal ones dividing the space be- 



