CAPEKLLID.K. tiol 



2. PROTELLA. 



rrotcUii, Dami, U. S. Explor. Expcd. p. 812. 



Body cylindrical. Ccphalon confluent witli the first segment of the 

 pereion. Picon rudimentary. Mandibles having an appendage. 

 Unathopoda subchclate. First two pairs of pereiopoda rudimentary, 

 ha\Tiig branchiae attached ; three posterior pairs subecpially robust 

 and long. Anterior pair of plcopoda xnidimcntary in the male ; 

 rest obsolete. 



1. Pi'otella Phasma. (Plate LV. fig. 4.) B.M. 



Capivlla pliasuia, Lamarck, Sij.sf. dcs Anim. sans Vert. p. lOo. 



Cancel' pha.'^ma, Jloidai/a, Liini. IVons. vii. p. 00. f. 3. 



Capri'lla Phasma, LatrviUc, Ency. 31eth. pi. .330. f. 37 (after Mont.). 



Jhsinarcfyt, Consid. sar Ics Cnisf. p. 278. 



Edirards, Hist, des Crust, iii. p. 108. 



imte, Cat. Crust. B.M. 1847; Cat. Brit. Crust. B.3I. 1850; Hist. 

 Brit. Crust, p. 210. 



JRat/ike, Nor. Act. xx. p. 95. 



Oosse, Marine Zool. p. 223. 

 Caprella acumiiiifera, Johnston, 3Ia(/. Kat. Hist. vi. 

 yj'jjjfina longispina, Kroyer, Nat. Tiilskr. 2ud ser. i. p. 470, 1844-40. 

 Protella longispina, Spence Bate, Synopsis, ^-c, Ann. Nat. Hist. Feb. 



1857. 

 Caprella spinosa, Goochir, Edin. New Phil. Journ. xxxiii. 



Male. — Ccphalon rounded in front, dorsally armed with a prominent 

 tooth. First segment of the pereion furnislicd near the postero- 

 dorsal margin A\ith a strong tooth ; second segment furnished with 

 two strong teeth latero-dorsally placed near the centre, and another 

 dorsally situated near the posterior margin ; third and fourth 

 segments furnished with rudiments of teeth similarly situated. 

 Superior antenme more than half the length of the animal : in- 

 ferior about half the lengtli of the superior. First pair of gnatho- 

 poda short ; propodos triangular, jjalm defined by a sharp jn'ocess : 

 second pair long, having the iirojiodos long-ovate, palm having a 

 deep excavation near the anterior ex.;remity, and defined by a 

 prominent blunt tooth surmounted by one or more spines ; dactylos 

 articulating v/itli the propodos subapically. Three posterior pairs 

 of pereiopoda having the i)ropodos arcuate, anterior margin armed 

 ■svith small tubercles surmounted by a spine, and a strong i)rocess 

 surmounted by several short, distally-directed spines, correspond- 

 ing with the extremity of the closed dactylos. 



Female differs from the male only in possessing the ovigerous plates. 



Length ^^ths of an inch. 



Ifah. Devonshire {Monlacju, C. S. B.) ; Moray Frilh \^Mr. Gree/or); 

 Frith of Forth {Mr. Goodsir, Dr. Johnston) ; Cullercoats, Yorkshii'C 

 {liev. A. M. Norman). Norway {liathhc) ; Christiauia {Kroner). 



