126 BUI^LETIN OF THE BUREAU OF FISHERIES. 



Polycirrus eximeus Cape Cod to Beaufort, N. C 



Ampharete setosa New Haven to east of Falmouth. 



Melinna maculata Woods Hole to Virginia. 



Cistenides gouldii Casco Bay to North Carolina. 



Clymenella torquata Eastport, Me., to Porto Rico. 



Maldane elongata Massachusetts to North Carolina. 



Trophonia affinis Massachusetts Bay to southern New Jersey. 



Parasabella microphthalmia. . . .Massachusetts Bay to Beaufort, N. C. 



Hydroides dianthus Casco Bay (in sheltered places) and Massachusetts Bay to Charleston, 



S. C. 



Spirorbis tubseformis Vineyard Sound to New Haven. 



Sabellaria vulgaris Provincetown to Beaufort, N. C. 



Having a range of approximately equal extent north and south. 



Lumbrineris hebes Casco Bay to New Jersey. 



Pseudopotamilla oculifera Bay of Fundy to Virginia. 



Of doubtful position. 



Pista intermedia Cape Cod to Block Island. 



It will thus be seen that a large majority of the more prevalent benthic species of 

 Annulata found in this vicinity are predominantly southern in their range, while of the 

 few species whose range is predominantly northern all but two have a range which 

 extends far to the southward of Woods Hole. 



SIPUNCULIDA. 



So far as known, this group of worms has a scant representation in our local fauna. 

 Only three determined species are included in our list, of which only one {Phascolion 

 strombi) was encountered with any frequency in the dredge. .This was mainly recorded 

 from the inshore stations of Buzzards Bay, though taken elsewhere on a number 

 of occasions (chart 83). On account of its peculiar mode of life it was probably fre- 

 quently overlooked during the earlier days of our dredging. This worm, according to 

 Gerould, is "found all along the eastern coast of North America from off Virginia 

 northward to Labrador." Since it occurs in such widely different latitudes as the West 

 Indies and the northern coast of Asia, the distribution of this species can have little 

 relation to temperature. 



Another of our local sipunculids {Phascolosoma verrillii Gerould) has been taken 

 on a very few occasions only. It was apparently observed by Verrill, though not 

 described by him. 



8. ARTHROPODA. 



With a few exceptions the phylum Arthropoda is represented in our marine fauna 

 by the class Crustacea alone, the members of which occupy somewhat the same position 

 in the life of the sea as do the insects upon land. The total number of Crustacea thus far 

 listed for this region is about 300, which is a larger number than is recorded for any 

 other class of animals or even for any entire phylum besides the Arthropoda. There 

 are comprised in our catalogue 289 definitely determined species of Crustacea, together 

 with 3 which are undetermined and 18 which have been determined with doubt. Of 

 these, 1 26 ( + 6?) are to be assigned to the subclass Entomostraca and i63(+ 15?) to the 

 subclass Malacostraca. Since the former subclass comprises for the most part small 



