262 Miss H. Richardson on the Isopods of the 



the fifth, sixth, and seventh sefjments 

 large and broad. Palp of maxillipeds 

 two-jointed 21. Cleantis. 



c'. Body smooth, ovate. Epimera of second, 

 third, fourth, and fifth thoracic segments 

 coalesced with segments ; those of sixth 

 and seventh segments distinct and 

 visible. Palp of maxillipeds three- 

 jointed. Joints of flagellum all con- [nov. 

 solidated and forming a single piece . . 22. Eusyimnerus, gen. 



17. Glyptonotus, Eights. 



Analytical Key to the Species o/GIyptonotus *. 



a. Joints of the peduncle of antenure not di- 

 lated ; flagellum eight- to fourteen- 

 jointed. Antero-lateral cervical lobes 

 prominent 35. G. entomon (Linnaeus). 



a'. Joints and peduncle of antennae greatly 

 dilated ; flagellum seven- to eight- 

 jointed. Antero-lateral cervical lobes 

 not prominent .■■ 36. G. Sabini (Kroyer), 



35. Glyptonotus entomon (Linngeits). 



Oniscus entomon, Linnaeus, Syst. Nat. 12th ed. ii. 1766, p. 1060 ; Pallas, 



Spicil. Zool. ix. 1772, p. 04, pi. v. figs. 1-6. 

 (?) Ento7non pyramidale, Klein, Rem. sur les Crustac^s, figs. 1-3. 

 Squilla entomon, De Geer, M6m. pour servir a I'llist. des Insectes, vii. 



1778, p. 514, pi. xxxii. figs. 1-10. 

 Asellus entomon, Olivier, Encycl. ]M6th. 1789, p. 253. 

 (?) Cymothoa enio?non, Fabricius, Ent. Syst. ii. 1793, p. 505. 

 Idotca entomon, Bosc, Hist. Nat. des Crust, ii. 1802, p. 178 ; Latreille, 



Hist. Nat. Crust, et Ins. vi. 1803-4, p. 361, vii. pi. Iviii. figs. 2, 3; 



(?) Lamarck, Hist, des Anim. sans. Vert. 1st ed. v. 1818, p. 159; 



(?) Uesniarest, Consid. Crust. 1825, p. 289 ; Rathke, Neuste Schriften 



der naturf. Gesellsch. in Danzig, i. 1820, p. 109, pi. iv. ; Kroyer, \'id. 



Selsk. Skrift. vii. 1838, p. 323 ; Milue-Edwards, Hist. Nat. Crust, iii. 



1840, p. 128 ; Kroyer, Nat. Tidsskr. ii. 1847, p. 402; White^, ListCr. 



Brit. Mas. 1847, p. 93 ; Brandt, Cr. in Middendorff's Sibirische 



Reise, ii. 1851, p. 145 ; Meinert, Nat. Tids.skr. 3rd ser. xi. 1877, 



p. 84 ; Brandt, Comptes Reudus, 1880, p. 713 ; Ann. & Mag. Nat. 



Hist. vi. 18S0, p. 98. 

 (?) Sadiiria entomon, Adams, in White, Sutherland's Voy. Baffin's Bay 



&c.. Appendix, 1852, p. ccvii. 

 Idotcff/a longicauda, Lockington, Proc. Cal. Acad. Sci. vii. 1877, pt. i. 



p. 45. 

 Glyptonotus entomon, Miers, Trans. Linn. Soc. London, xvi. 1883, 



pp. 12, 13, pi. i. tigs. 1, 2. (See Miers for further synonymy.) 



Hah. Circumpolar; west coast of North America to Pacific 

 Grove, Calit'ornia. 



* This key is taken from Miers, Journ. Linn. Soc. London, Zool. xvi. 

 (1883), p. II. 



