XV.-REPORT ON THE DECAPOD CRUSTACEA OF THE ALBA- 

 TROSS DREDGINGS OFF THE EAST COAST OF THE UiNlTED 

 STATES m 1883. 



By SiDNKY I. Smith. 



With the exception of tbree or four species represented by s])eciniens 

 too imperfect for i)roper determination or descrij)tion, this rei)ort in- 

 chides all the true ])ecapoda from the dredgings of the Albatross in 

 1883. In the lists of specimens examined I have endeavored to enu- 

 merate every specimen which has been submitted to me in order to in- 

 dicate as far as i)ossible the relative abundance of the species at the 

 different stations. In these lists I have given the temperature and na- 

 ture of the bottom as fully as the data accessible to me permitted. In 

 indicating the nature of the bottom the following abbreviations, after 

 the Coast Survey system, are used : 



lu the column for the number of specimens examined, I is used to in- 

 dicate large specimens; s, small specimens; and y, young. When the 

 sexes were not counted separately the whole number of specimens ex- 

 amined is placed in the middle of the column; when the sexes were 

 counted separately the number of males is put on the right, the number 

 of females on the left, and the number of young in the middle, followed 

 by the letter y. As a basis for ascertaining the breeding season, I have, 

 in a great number of cases, noted the presence or absence of egg-bear- 

 ing females ; when the number of such females was counted it is entered 

 in the appropriate column; when specimens carrying eggs were found, 

 but not counted, a plus sign, -|-, is used; and when none of the speci- 

 mens examined were carrying eggs a zero, 0, is used. The ifational 

 Museum catalogue numbers are given for all the specimens except those 

 which I examined at Wood's HoU before they were catalogued. When 

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