MARINE ISOPODA OF NEW ENGLAND, ETC. 



323 



Specimens examined. 



Locality. 



Bottom. 



When col 

 lected. I 



Eeceivedfrom — 



Speci- 

 mens. 



Fo. Sex. 



Dry. 

 Ale. 



110-115 



54-60 



1934 



1923 



1935 



1924 



1925 



1927 

 1928 



1929 



1930 



1932 



90 



112-115 



Gulf of Maine, ESE. 



from Cape Ann 



29-30 miles. 

 Gnlf of Maine, ESE. 



from Cape Ann 



30-31 miles. 

 GnlfofMaine, SE.J 



S. from Cape Ann 



6-7 miles. 

 Gulf of Maine. SE. 



from Cape Ann 14 



miles. 

 Gulf of Maine, E. 



from Cape Ann 140 



miles. 

 Between Cape Ann 



and Isles of Shoals 

 Gulf of Maine, S. of 



Cashe's Ledge. 



Casco Bay, Me 



Banquereau 



Bay of Fundv, Me . . 

 Bay of Fundy^ Clark's 



Ledse. 

 Bayof Fundy, Buck- 

 man s Head. 

 Bay of Fundr. off 



Todd's Head. I 

 Bay of Fundy, East- I 



port. 

 Thirty miles east of ;i60-300 



Northeast light 



on Sable Island. 

 South of Halifax 120 



miles. 



85 



Mud, sand, stones! — , 1878 j U.S. FishCom. 



I 

 I 



Mud, stones .... —,1878 ...do 



Sand, mud { —,1878 do 



Softmud ,1877 ....do 



S^i nd ?ind gravel . — , 1877 do ... 



L. -w.-SO 



Clay, sand, mud. 

 Eocky 



Eocky 



— , 1874 



— , 1873 



— , 1873 

 — , 1878 



—,187 



...do 



...do 



...do 

 Capt. CoUins 



r.s.F 



..do 

 do 



Ale. 

 Ale. 



d $ Alo. 

 Ale. 



—,1878 L'apt 



,1872 U.S. Fish Com 



,1872 



1 



111. 



190 



On Paragorgia. 



Gravel and peb- 

 bles. 



Aug. 27, 1872 |.... do 



, 1870 I A. E. VerriU . . . 



, 1879 , Mr.C.Euckley. 



I 

 —,18771 U.S.FishCom. 



Ale. 



Ale. 



Ale. 



Ale. 

 Ale. 

 Ale. 

 Ale. 



Ale. 



Ale. 



Ale. 



Dry. 



Alo. 



Janira spinosa Harger. 



Janira spinosa Harger, Proc. U. S. Nat. Mus., 1S79, vol, ii. p. 158, 1879. 



This species is well marked among our known Isopoda, by the double 

 row of spines along the back and the acute laciniations or angulations 

 on the lateral margins of the thoracic segments. 



The body is robust, the length but little exceeding twice the breadth. 

 The head is broad, and produced in the median line into a prominent 

 acute spine, or rostrum, about as long as the head. The antero-lateral 

 angles are also produced and very acute, but do not extend as far as the 

 rostrum. The eyes are rounded semi-oval, with the long axes converg- 

 ing toward a point near the base of the rostrum. The basal segment of 

 the antennulse is less than one-third the length of the rostrum. The 

 second segment is about as long as the first, but of only about half its 

 diameter. The flagellum equals, or slightly surpasses, the third antennal 

 segment, and consists of about twelve segments. The scale, or spine, on 

 the second segment of the antennae is slender and considerably surpasses 

 the third segment. The external lamella of the maxillipeds has the 

 outer angle prominent, though not acute. 



The thoracic segments are produced laterally into one or two acute 

 angulations, giving a sharply serrated or dentated outline to the the- 



