No. 1222. ISOPODS OF THE ATLANTIC COAST— RICHARDSON. 569 



152. METOPONORTHUS PRUINOSUS (Brandt). 



(?) AiirUn.<i minor H. Sloane, Voyage to Jamaica, Lond., H, 1725, j). 199. 

 Porcellio pruinosus Brandt, Bull, de la Soc. Imp. d. Naturaliytes de Mogcou, 



p. 19. 

 (?) Porcellio truncatus M. Edwards, Hist. Ties Crust., Ill, p. 171. 

 Porcellio maculicornis Koch, Deutschl. Crust., j). 34. 



Porcellio frontalis Lereboullet, M4m. Clop., p. 63, pi. i, fig. 17; j)!. in, figs. 81-87. 

 Porcellio zealandicus White, List. Crust. Brit. Mus., 1847, p. 99. 

 {f) Porcellio immaculatus Fitch, Rep. Nox. Ins., p. 120. 

 Porcellionides flavo-iittatus Miers, Proc. Zool. Soc. Lond., 1877, p. 669, pi. lxviii, 



fig. 4. 

 {f) Porcellio jelskii Miers, Proc. Zool. Soc, Lond., 1877, p. 668, pi. lxviii, fig. 3. 

 Metoponorthus pruinosus JivDDE-LiVyiD, Crust. Isop. Terrestria, 1885, pp. 169-171. 



(See Budde-Lund for synonymy.) 



llahltat. — North and South America; Europe; North Africa, etc. 



153. METOPONORTHUS VIRGATUS Budde-Lund. 



Metoponortlms virgatus Budde-Lund, Crust. Isop. Terrestria, 1885, p. 182. 

 Habitat. — Florida; Nova Aurelia. 



66. RHYSCOTUS Budde-Lund. 



154. RHYSCOTUS TURGIFRONS (Budde-Lund). 



Stenomacrus turgifrons Budde-Lund, Prosp., p. 5. 



Rhi/scotus turgifrons Budde-Lund, Crust. Isop. Terrestria, 1885, p. 192. 



Habitat. — St. Jean, West Indies. 



67. ACANTHONISCUS (White) Kinahan. 



155. ACANTHONISCUS SPINIGER White. 



Acanthoniscus spiniger White, List. Crust. Brit. Mus., 1847, p. 99. — GossE, A 

 Naturalist's Sojourn in Jamaica, Lond., 1851, p. 65. — Kinahan, Proc. Dubl. 

 Univ., I, p. 197, pi. XIX, fig. 4. — Budde-Lund, Crust. Iso]>. Terrestria, 1885, 

 pp. 241, 242. 



Ilah'itat. — Jamaica. 



Familj-XX. ARMADILLIDID.F]. 



analytical key to the genera of armadillidid.e. 



a. Outer branch of the uropoda very small or minute. Basal joint large. 

 h. Flagellum of external antenn;e with two or three joints. 

 c. Flagellum with two joints. 



d. Eyes small. First thoracic segment with coxopodites not distinct from 

 segments on upper side. Caudal segment posteriorly truncate. 

 e. Last abdominal segment subtetragonal, ])ase wider than apex, more or 

 less contracted in the middle. External branch of the uropoda inserted 

 in the middle of the internal lateral margin of the basal joint. Coxo- 

 podites of first and second segments not distinct from segments (under- 

 side) 68. Cuharis. 



