146 On Dredging off the South Coast of New England. 



species of Neph-opsts, very closely allied to iV. Stewartt, 

 Wood-Mason, heretofore the only known species, which was 

 described from a single specimen dredged in the Bay of Bengal 

 and wanting the great claws. These claws, in our speci- 

 mens, are clothed with very long soft hair, and are very 

 different from the great claws of Nephrops, though the genus 

 is very closely allied to Nephrops, as pointed out by Wood- 

 Mason. The number and arrangement of the branchiffi, not 

 noticed in the description of N. Ste^vartt, are the same as in 

 Nephrops. There were also new species of Arctus, Axius, 

 PontopMJus, Bythocaris, Pandalus^ and Penceus^ and with these 

 the following arctic species — Pontophilus norvegicuSj Pan- 

 dalus propinquus^ Hippolyte securifrons^ and Sergestes arcticus^ 

 the last species being common in 300 to 500 fathoms. 



Among the Schizopoda were tiiree arctic species, Thysa- 

 nopoda norvegica^ Pseudomma roseum, and Boreoinysis arctica^ 

 the last heretofore known to America only from Greenland. 



The only Stomatopod was a new species of Lysiosquilla, 

 which appears to be closely allied to L. sjjinosa, from the 

 Indian Ocean and New Zealand, or at least much more closely 

 allied to this than to any other species described in Mr. Miers's 

 recent review of the Squillidfe. 



Few species of Amphipoda were found; but the arctic 

 species, Stegocephalus ampulla^ Haploops setosa, and Epvmeria 

 loricata^ G. O. Sars, occurred, the last in abundance. 



Among the Isopoda there were four species previously 

 known only from further north on our coast, and Mounopsis 

 typica^ a deep-water species known from our northern coast, 

 Greenland, and Northern Europe. There were besides 

 several species not determined. 



Fifty species of Malacostraca are enumerated in the prelimi- 

 nary notice above referred to ; and of these fourteen are de- 

 scribed as new and three others are indicated as probably new, 

 forty-three are first recorded as belonging to the New-England 

 fauna south of Cape Cod, twenty-eight are new to the whole 

 fauna from Cape Hatteras to Northern Labrador, and twenty- 

 one are new to America including Greenland. Of the forty- 

 three species new to the Southern New-England fauna, fifteen 

 are now known also from the New-England fauna north of 

 Cape Cod; and of the remaining twenty-eight, four were 

 already known from the Straits of Florida, three from Green- 

 land and Northern Europe, and two from the Mediterranean. 

 It should be added that two of the species, the Lyreidus and the 

 Nepkropsisy belong to genera heretofore known only from the 

 Pacific region, and each represented there by a single species, 

 while a third species, the Lysiosquilla^ has its nearest known 

 ally in a species from the same region. 



New Haven, Conn., IT, fo, ii., 

 Pec. 29, 1880. 



