18 ME. E. J. MIEES ON THE IDOTEIDiE. 



dactylus completely reflesible. The four posterior legs are similar 

 iu form, witli non-dilated penultimate joints, and clothed with. 

 bristly hairs. The stylet on the second pair of postabdominal 

 appendages is elongated and curved at the tip. The terminal 

 plates of the opercular valves are small and not acute at the apices. 

 The colour of this species is variable, but usually dark greyish, 

 with lateral mottliugs of light yellowish grey. Its length does not 

 exceed | inch (12-16 mm.), and breadth 5 inch (6-8 mm.). 



The description is almost entirely taken from Mr. Harger's 

 valuable report. 



Its range extends along the eastern shores of Nortli America 

 as far south, according to Say, as Morida, and northward to Nova 

 Scotia, it having been obtained at Halifax in 1877 by the natu- 

 ralists of the U.S. Fish Commission. There are in the British- 

 Museum collection five small, and now imperfect, examples of this 

 species, presented by Thomas Say. 



GrLTPTONOTiD-S TuETSII. 



Idotea Tuftsii, Stimpson, Marine Invert. Great Manan, p. 39 (1853) ; 

 Verrill, Pr. Amer. Assoc, p. 362 (18/4); id. Rep. U.S. Commiss. of 

 Fish 4" Fisheries, i. p. 340 (1874) ; Harger, Rep, U.S. Commiss. of 

 Fish Sf Fisheries, i. p. 569 (18/4). . 

 Chiridotea Tuftsii, Harger, Am, Journ. of Sei. cy Arts, (ser. 3) xv. 

 p. 374 (1878) ; id. Proc. U.S. Nat. Mas. ii. p. 159 (1879) ; id. Rep. U.S. 

 Commiss. of Fish S)- Fisheries, vi. p. 340, pis. iv. & v. figs. 20-23 

 (1880). 

 This species, of which I have seen no specimens, is, according 

 to Mr. Harger, distinguished from the preceding by its smaller 

 size and longer antennse, the joints of the peduncle of which are 

 slenderer than in G. ccbgus, the fifth as long as the third and fourth 

 together; the flagellum about 12 -jointed, longer than the peduncle, 

 and tapering from the base. The antennules are slender, and do 

 not surpass the peduncle of the antennse. The incision in the 

 produced lateral margin of the head is nearly closed by the over- 

 lapping of the antero-lateral lobe. 



The length scarcely exceeds ^ inch (9 mm.), breadth ^ inch 

 (4<-5 mm.). 



It has been taken at various localities on the eastern coast of 

 Nova Scotia and the United States, e.g. at Halifax, in the Bay 

 of Fundy, on the coast of Maine and Massachusetts (in consider- 

 able abundance), and iu Long Island Sound. Por further parti- 

 culars see Harger's often-cited Eeport on the Marine Isopoda of 



