of the Pontoniidse. 389 



4. Pontonia unidens^\w<g^\^j^ 18S). 



Pon/onia unidens, King'sley, Proc. Ac. N. S^i. Pliilal. 1870, p. 422, 



M. xW. fig. 9 (1880). 

 {?)Pontonia mexicana, Gudria, de la S.igra's Hist. Cuba (18oG). 



West Indies. 



5. Pontonia hrevirostris Miers, 1884. 



evi 



Seychelles. 



Pontonia hrevirostris, Miers, ' Alert ' Pteport, Crust, p. •'562, pi. li. fi'i-. B 

 (1884). 



6. Pontonia pinme Ortmann, 1894. 



Potitonia pinnce, Ortmann, Semon's * Forschungsreisen in Austral.' 

 p. 16, pi. i. (1894). 



East Africa. 



7. Pontonia ascidlcola sp. n. 



A Pontonia with antennal scale barely reaching end of 

 peduncle of first antenna and with rostrum short, barely 

 reaching middle of antepenultimate joint of peduncle of first 

 antenna, without keel below. 



Length 18 miilim. 



[New Britain.] 



(?) Pontonia domestica Gibbes, 1851. 



Pontonia domestica, Gibbes, P. Am. Assoc, iii. p. 196 (1851) ; Kingiley, 

 Proc. Ac. N. Sci. Philad. 1878, p. 95. 



Bahamas. 



Genus Conchodytes, Peters, 1851. 



Cowc/joti'y^es, Peters, Ges. naturf. Freunde Berlin, 1851 (fide Heller); 

 id. Ber. k. Ak. Wiss. Berlin, 1852, p. 591 ; Hilgendorf, Monatsber. 

 k. Ak. Wiss. Berlin, 1878, p. 835. 



Pontoniidae with body much depressed ; rostrum short, 

 depressed, bent downwards, without dentations, bearing a 

 keel below at the free end ; both fltigella of the first antenna 

 very short, thicker of the two bifid ; scale of second antenna 

 short, broad ; flagellura of same short ; second maxilliped with 

 penultimate joint broader than last joint, which it bears 

 terminally ; third maxilliped with last two joints fairly 

 broad, together shorter than preceding joint, which is broad ; 

 dactyles of last three legs short, stout, curved, bearing on the 

 underside a hooked spine and a low basal protuberance. 



Ann. & Mag. N. Hist. Ser. 7. Vol. ii. 27 



