28 S. I. Smith — Crustacemis of the Atlantic Coast. 



on the writings of other observers, or whether the author has merely 

 conjectured that the species — perhaps never seen by him — inhabits 

 certain regions. Heretofore my own practice has not always been 

 free from fault in this respect, but throughout the following pages I 

 have been careful to indicate distinctly what portions of the state- 

 ments are based on my own observations and what are merely copied. 

 To do this in the paragraphs devoted to the geographical distribu- 

 tion of the species, I have used the mark of affirmation (!) after each 

 region from or in which I have examined specimens; but to avoid 

 the too frequent repetition of this mark, in cases where the enumera- 

 tion of several stations or depths immediately follows the name of 

 a special region or locality, it has been placed after the latter only, it 

 being understood that I have examined specimens from all the sta- 

 tions or depths mentioned under that region or locality. The name 

 of the collector, or of the authority for the locality of the specimens 

 examined, — unless I have myself been collector or observer, — is either 

 inserted in parenthesis after the locality or indicated by the date, as 

 explained below. The authorities for all localities from which I have 

 not examined specimens are similarly indicated in pai-entheses. In 

 the synonymy, all the references given have been made by direct 

 examination of the works quoted, unless specially indicated to the 

 contrary by the use of quotation marks. 



To avoid the repetition of the names of collectors, after the numer- 

 ous localities on our coast, mentioned under the geographical distri- 

 bution of the species, the year in which the collections were made is, 

 in most cases, alone inserted ; and a short statement of the principal 

 sources whence the collections have been received, is inserted here, 

 that portion which is subsequently referred to as authority for col- 

 lections being arranged chronologically. 



1864. Collections made at Eastport, Maine, on the Bay of Fundy, 

 during September and October, by Professor Verrill and the writer. 



1868. At the same locality, dm-ing August and the early part of 

 September, also at the Island of Grand Menan and in the deep 

 waters off Eastport ; by Prof. Verrill, Prof. H. E. Webster, Rev. 

 Geo. A. Jackson, and the writer. 



1870. At the same localities and dnring the same season as in 

 1868 ; by Professor Verrill and Mr, Oscar Harger. Also, by myself 

 upon the southern side of Long Island, during August and the early 

 part of September. 



1871. Professors Verrill and J. E. Todd, and the writer made col- 

 lections, for a short time in x\pril, in the neighborhood of Great Egg 



