6o 



188 1. Edotia (part), Micis, Jfiurn. Linn. Soc- Loiidon, vol. 16^ 



,P-65. 

 1885. Synidotca, S'avs, Norwegian North Atlantic Exp., vol. 14^. 



p- ij6. ^ 



1895. Stenosima, Dollfus^ Feuille dcs Jenncs Naturalistes ser. 3. 



Annec 25, No. 292,, p. 9. 

 1897. Synidotca, Benedict, Proc Acc d. Philadelphia, p. 390. 

 1899. Synidotea, H. Richardson, Free. L-S. M us., vol. 2\, p. 847. 

 1900- Sy-iiidotca, H- R chardst. n, American Njtu.alist, vol- 34, 



p. 227. 

 1901. Synidotea, H- Richardson, Proc. L'.S. Mus., vol. 2t,, p. 54T. 

 Of this genus an excellent little monograph was published by 

 Dr. J. E. r)enedict in 1897. He assigns to it fifteen species, and 

 gives figures of the thirteen \vhich had come under his own 

 observation. The genus may be defined a.s follows: — 



Sides of head in a dorsal view entire and not laterally produced. 

 Side-plates of pergeon coalesced \\ith the segments. Pleon con- 

 sisting of a single segment, with ( ne ])air of lateral sutures at the 

 base. Eyes lateral- Second antennas with well developed multi- 

 articulate liagellum. Maxillipeds with thr^ fc-jouit< d palp, 

 or in oth'-r words, maxilliped.s five-jointed. Uropods with a 

 sinei^le b anrh. 



Dr. Benedict distinguishes two sections of the genus, the first 

 having the distal end of the ple( n cmarginate or bicuspid, the 

 second having the end bluntly pointed. 



Miss Richardson, in her at^alytical key to the genera of 

 Idotcidae, assigns to the group including Synidotea the character 

 of having the ".egs all ambulatory." In S. hirtipes, however, the 

 first pair are shorter and stouter than the rest with expanded 

 penultimate joint and rcflexihlc finger constituting a prehensile 

 hand. Also they close so firml\- ui)()n the mouth that their amibu- 

 latory function has probably been relinquished- 



SvxinOTEA iiiRTiPi'S (.Mihu'-Fdwards). 

 1840. Idotea hirtipes, Milne-Edwards, Mist. Nat- Crust., voJ. 3, 



1843. Idotea hirtipes, Krauss. Die Siidafrikau'schen Crustaceen, 



p- 61. 

 i88i- Edotia hirtipes- Miers. Jom-n. Linn. Soc. London, vol- 16, 



p. 68. 

 1897. Synidotea hirtipes. Benclict. I 'roc. .\cad- Philadelphia, p- 



'403- .^ ^. 



On the description given by .\fiors. and quoted by Benedict, 

 little criticism is needed, but Miers says- without reserve, that 

 the legs are long and slender, whereas the fir^t pair are rather 

 short and stout. Also he speaks of the distal emargination in the 

 telsonic segment as small and shallow. It scenYs to be variable. 



