72 ME. E. J. MIEES O'N THE IDOTEID^. 



Edotia MONTOSA. 



Idotea montosa, Stimpson, Marine Invert. Gd. Manan, p, 40 (1853), 

 Epelys montosus, Harger, Rep. U.S. Fish Commission, pt. i, p. 5/1 

 (1874) ; id. Pr. U.S. Nat. Mus. ii. p. 161 (1879) ; id. Rep. U.S. Fish 

 Comm. pt. vi. Isopoda,-p. 359, pi. viii. figs. 44-47 (1880); Verrill, 

 Amer. Journ. of Sci. S)- Arts, (ser. 3) vol. vii. p. 45 (1874); id. Pr. 

 Amer. Assoc, p. 367 (1874) ; id. Rep. U.S. Fish Comm. pt. i. p. 270 

 (1874) ; Smith 8r Harger, Tr. Conn. Acad. iii. p. 3 (1874) ; Whiteaves, 

 Further Deep-sea Dredging G. St. Lawrence, p. 15 " (1874)." 



This species, according to Harger, closely resembles the fore- 

 going, but is distinguished as follows : — The eyes are prominent ; 

 the antero-lateral angles of the head salient, and the tubercles on 

 its upper surface more prominent than in JEJ. triloha. The lateral 

 margins of the thoracic segments, especially of the second, third, 

 and fourth, are angulated and salient (in the middle, as the figure 

 shows). Postabdomen more elongated than in the last species, 

 its breadth being to its length as 5'5 to 10 ; the depression cross- 

 ing it is partially interrupted at each side by a tubercle, which 

 often projects, as seen from above, just behind the basal lobe, 

 forming a shoulder to the large basal lobe. Stylet on the second 

 pair of postabdominal appendages in the male attains the middle 

 of the cilia. Colour as in the preceding, dull. Length nearly 

 ^inch (lOmillim.), breadth about -|-inch (4millim.). 



It has been found as far north as Halifax and in the Bay of 

 !E\indy, and ranges southward to Long Island Sound. 



Judging merely from the descriptions and figure I should 

 much doubt if this species be really distinct from ^. triloha ; but 

 having seen no specimens I cannot venture to unite the two 

 forms. 



Mr. Harger designates, under the name var. Jiirsida, a few 

 specimens collected in "Whiting Eiver, which are much more 

 decidedly hirsute than is usual, both on the upper surface and 

 the legs. In other respects they appear to be referable to JE. 

 montosa, although the posterior segments are rather less angulated 

 at the lateral margin. 



Edotia tubeectjlata. (Plate III. figs. 3-6.) 



Edotia tuberculata, Guerin-Meneville, Icon. Regne Anim,, Cr. p. 34 

 (1829-44) ; Cunningham, Trans. Linn. Sac. xxvii. p. 499 (1871). 



Anisonotus falklandicus, White, List Crust. Brit. Mus. p. 97 (1847), 

 descript. nulla. 



