566 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiii. 



Cylisticus convexus Budde-Lund, Crust. Isop. Terrestria, 1885, pp. 77-79 (see 

 Budde-Lund for synonymy).— G. O. Sars, Crust, of Norway, II, pis. xi, xii, 

 1897, p. 186. 



Tlahitat. — North America; also Sweden; Denmark; British Isles; 

 Germany; Bohemia; Holland; Belgimn; France; Turkey; and coast of 

 Norway. 



64. PORCELLIO Latreille. 



ANALYTICAL KEY TO THE SPECIES OF PORCELLIO. 



«. Surface of body smooth. Inner face of the right mandible with six to seven 

 penicils, of the left mandilile with seven to nine penicils. Frontal lateral 



lobes of head of moderate size, rounded 148. PorceUio lievh Latreille. 



a'. Surface of body roughly granulate or tuberculate. 

 h. Inner face of the mandibles with four to five penicils. Body with spots. 

 c. Third joint of peduncle of second pair of antennae furnished with a small apical 

 tooth. Frontal lateral lobes of moderate size. Color varying from gray 

 to black, with three longitudinal lines of white spots. Flagellum with joints 



subequal, or first shorter than second 149. PorceUio rathkei Brandt. 



r'. Second joint of peduncle of second pair of antennse furnished with large apical 

 tooth. Frontal lateral lobes large. Color, yellow; body spotted with black; 

 spots arranged in longitudinal lines. Flagellum with first joint a little 



longer than second joint 150. PorceUio S2nnirornis Say. 



b\ Inner face of right mandible with four to five penicils, of left mandible with 

 seven to eight penicils. Frontal lateral lobes of head large, oblique. Body 

 without spots 151. PorceUio scaber Latreille. 



148. PORCELLIO I.JEYIS Latreille. 



PorceUioLTvisIjATRmhLE, Hist. Crust. Ins., VII, p. 46; Gen. Crust., I, p. 71. — Leach, 

 Edinb. EncycL, VII, p. 406; Transact., XI, p. 375. 



Oni^scus Ixvis Lamarck, Hist. Nat. An. s. Vert., V, p. 154; 2d ed., V, p. 261. 



(?) PorceUio Isevis Risso, Crust. Nice, p. 156; Hist. Nat., pp. 119, 163. — Desmarest, 

 Consid., p. 321. 



(?) PorceUio degeerii Audouin and Savigny, Descript. de I'Egypte, p. 289, pi. xiii, 

 fig. 5. 



PorceUio euccrcus Brandt, Bull. Soc. Imp. d. Moscou, VI, 1833, p. 177. — Milne- 

 Edwards, Hist. Nat. des Crust. , III, p. 168. 



PorceUio syriaciis Brandt, Bull. Soc. Imp. d. Moscou, VI, 1833, p. 178. —Milne- 

 Edwards, Hist. Nat. des Crust., Ill, p. 170. 



PorceUio musculus Brandt, Bull. Soc. Imp. d. Moscou, VI, 1833. 



PorceUio cinerascens Brandt, Bull. Soc. Imp. d. Moscou, VI, 1833, p. 178. 



PorceUio dubius Brandt, Bull. Soc. Imp. d. Moscou, VI, 1833, p. 178. — Milne- 

 Edwards, Hist. Nat. des Crust., Ill, p. 170. 



PorceUio poeyi Guerin, Comptes Rendus, 1837, p. 132. 



PorceUio Isevis Milne-Edwards, Hist. Nat. des Crust., Ill, p. 169; Regne an., 

 Planch, p. 71 bis, fig. 2. 



PorceUio urbicus Koch, Deutsch. Crust., p. 36. 



PorceUio degeerii Brandt, Wagner Reise Alg., Ill, 1836, p. 278. 



PorceUio ovatus Zaddach, Synops., p. 13. 



PorceUio flavipes Kocn, Berichtig, etc., p. 206, pi. viii, fig. 97. 



PorceUio degeeriiluvcAS, Expl. d'Alg., I, pp. 69, 139. 



PorceUio Isevis Lereboullet, Mem. de la Soc. de Strasbourg, IV, p. 45, pi. i, fig. 

 7; pi. Ill, figs. 55-60. 



PorceUio poegi Gcerin, Ramon de la Sagra, Crust., -p. 67. — Saussure, Mem. Soc. 

 phys. Geneve, XIV, 1858, p. 477, pi. v, fig. 34. 



