350 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



Isles of Shoals ! , by Capt. G. H. Martin, of the schooner ' Northern Eagle,' 

 in 1878, and at Halifax!, Nova Scotia, by the U. S. Fish Commission in 

 1877, whence it extends to at least Q0° north latitude. 



The figui-e and description of Idotea metallica given by Bosc corre- 

 spond well with smaU specimens of this species such as were taken by 

 Professor S. I. Smith and the writer on George's Banks, and the locality 

 he gives, ^' the high seas," corresponds also with the habit of this species, 

 so that I am inclined to think that his name ought to be restored. I 

 have, however, retained Kioyer's name, since he so thoroughly described 

 and so well figiu-ed the species as to leave no doubt of its identity. 



Specimens examined. 



1080 

 1998 

 1999 

 2002 

 2003 

 2004 

 2000 

 2001 



Locality. 



Fire Island Beach, Long Island . . 



Viaeyard Soaud, Masa 



do 



...do 



...do 



...do 



George's Bank 



Halifax, N. S 



Habitat. 



Surface. 

 Surface. 

 Surface. 

 Surface. 

 Surface. 

 Surface . 

 Surface. 

 Surface. 



WTien col- 

 lected. 



— , 1870 

 — , 1875 



July 14, 1871 

 Oct. 24,1875 

 Nov. 16, 1875 

 Sept. — , 1872 

 ,1877 



Receivedfrom- 



S.L Smith 



U.S. Fish Com. 



....do 



.-..do 



V. N. Edwards 



....do 



Smith &Harger 

 U. S. Fish Com 



Speci- 

 mens. 



No. Sex. 



d"? 



cC? 



Dry. 

 Alo. 



Alo. 

 Ale. 

 Alo. 

 Alo. 

 Alo. 

 Alo. 

 Ale. 

 Ale. 



Synidotea Harger. 

 Synidotea Harger, Am. Jour. Sci., Ill, vol. xv, p. 374,1878. 



Antennoe with an articulated flagellum; epimeral sutures not evident 

 above J pleon apparently composed of two segments, united above but 

 separated at the sides by short incisions ; operculum with a smgle api- 

 cal plate; palpus of maxiUipeds three-jointed. 



Of the two species that I had referred to thi^ genus I had been able to 

 examine only the first when this paper was i)laced in the hands of the 

 printer. Two specimens of the second species were collected during the 

 summer of 1879, and an examination of their characters leaves no doubt 

 of their generic affinity. Except in the particulars above specified the 

 description already given of the genus Idotea will in general apply also 

 to the present, but the species are characterized by a firmer and more 

 solid structiu^e, the segments being more closely articulated and the integ- 

 ument having a somewhat shelly appearance. The pleon is further con- 

 solidated than in that genus, the only trace of its composite nature, as 

 seen from above, being a slight incision on each side near the base and 

 running up somewhat obliquely toward the dorsal surface. The well- 

 developed and distinctly articulated flagellum of the antennte serves 

 easily to distinguish the species from those of the following genera of the 

 family. 



