756 ‘The American Naturalist. [August, 
ally in Fridericia, is perfectly evident from the above account. The 
form of the setz is easily derived from the straight, internally hooked 
type of Friedericia, while their arrangement in the bundles is even 
more characteristically of the Friderician plan. The post-clitellar ori- 
gin of the dorsal vessel, the colorless blood, the two kinds peritoneal 
corpuscles, the large size and branched arrangement (as in some spe- 
cies of Fridericia) of the salivary glands, the simple alimentary canal, 
the character of the male ducts and of the nephridia are all characters 
which these two genera possess in common. On the other hand, Dis- 
tichopus is clearly separated Fridericia by the abortion of the dorsal sete 
bundles, and perhaps by the absence of dorsal pores. 
The absence of dorsal setæ is not to be regarded as allying Disticho- 
pus with Anachaeta.—J. PERCY Moore. 
New Mollusca from the Pacific.—While the Albatross was en- 
gaged in making soundings between the coast of California and the 
Hawaiian Islands in 1891-92, some dredgings were made on the archi- 
benthal plateau about the islands in water from 300 to 400 fathoms 
deep, from which a small collection of molluses and brachiopods was 
made. This material is now reported upon by Mr. W. H. Dall. It 
proves to be most interesting, and wholly new, not a single species 
heretofore described, either from the deep sea or from the Hawaiian 
Archipelago, being found among the dredgings. A new subgenus of 
Pleurotomide, the hitherto unknown and very interesting soft parts of 
a species of Euciroa, regarded as belonging to the Verticordiide, but 
now necessarily raised to family rank, and several new Brachiopods, 
are described. To these are added a few new species from the north- 
west American coast. | 
The Hawaiian collection is distributed as follows: Gasteropoda 11, 
Seaphoda 2, Pelecypoda 4. The northwest American species have been 
described before, but are now figured with a few additional notes, and 
13 new species added to the list. (Proceeds. U. S. Natl. Mus. xvii, 1895.) 
Taylor on Box Tortoises.—lIn a classification of the Box Tor- 
toises of the United States, Mr. W. E. Taylor adopts the species rec- 
ognized by Baur, and adds one new one, Terrapene baurii. The 
author agrees also with Baur as to the important position in the 
taxonomy of Terrapene of the modification of the zygomatic arch, and 
gives seven figures, showing that the quadratojugal is well developed in 
primitive forms of the genus, rudimentary in intermediant forms, and 
absent in T. ornata, the most specialized species. 
