NERITINA. A471 
Rico (Blauner®); Guadeloupe (Lamarck’, Bean, &c.); Martinique (March, 
yries); St. Vincent 5. 
3. Neritina turbida. 
Neritina turbida, Morelet, Test. Noviss. i. p. 27 (1849) *; Reeve, Conch. Icon. ix., Neritina, t. 29. 
fig. 183°; v. Mart. in Martini & Chemnitz, Syst. Conch.-Cab. ed. 2, Neritina, pp. 80, 279° ; 
Fisch. & Crosse, Miss. Scient. Mex., Moll. ii. p. 474, t. 58. figg. 4, 4a, b*. 
Semiglobose, spire very short and obtuse ; outside yellowish-green, with three spiral rows of pale or even white 
spots, each of them edged with black on the side towards the aperture, which gives them the appearance 
of scales ; the interstices between the spiral rows marked either with similar smaller spots or with 
undulating vertical black lines, or with a combination of both. Columellar area not covering the whole 
lower face, pale fulvous; columellar edge distinctly denticulated at the middle. Operculum blackish-grey 
on its outer face, with whitish nucleus and blood-red edging; the two apophyses distinct, the apophysis 
triangular, orange. 
Diam. maj. 15, min. 83, alt. 15, alt. apert. 18, marg. col. 9, lat. areze 5 millim. 
bh) 13, 29 8, 99 13, 99 11, 29 8, 9 ) 39 
99 9, 29 5, 29 8, 99 vee 39 53, 99 3 99 
Hab. W. GuateMaLa: mouth of the River Machaquilan (Morelet !~4); Esteros de San | 
José and Champerico, Pacific coast (Stoll). 
S.W. Costa Rica: Swamps of Sierpe, 5 metres above the sea, on aquatic plants, 
copiously (Pittier, April 1892); in a tributary river of the Rio Coto (Pitter, 
1896). 
This species differs from young examples of WV. punctulata in the greater convexity 
of the whole shell, the distinctly prominent spire of at least two whorls, and the 
proportionately narrower columellar plane, which does not occupy the whole under 
face of the shell. A young specimen of WV. punctulata from Cuba has diam. maj. 13, 
min. 7, alt. 114, alt. apert. 11, marg. col. 7, lat. aree 6 millim. 
Among the specimens from Champerico some are normal, while others approach 
N. virginea in their more conical form and even by their markings. 
4, Neritina lineolata. (Tab. XXVIII. figg. 2, 6.) 
Nerita subviridis lineis capillaribus nigris subrecte diductis, Lister, Hist. Conch. t. 605. fig. 33 
1688) *. 
te. ee Lamarck, Hist. Nat. Anim. sans Vert. vi. 2, p. 186 (1822) *; éd. 2, vill. p. 574°; 
Menke, Synops. Moll. ed. 2, p. 48° (nec Sowerby, nec Reeve). 
Neritina clandestina, Menke coll. ’. 
Neritina olivacea, Wiegmann, in Mus. Berol.° (cit. Menke, 1830). 
Neritina gravis, Morelet, Test. Noviss. 1. p. 27 (1849) 7; Shuttleworth, in Bern. Mittheil. 1854 
(Diagn. never Moll. vii.), p. 160 > 
Neritina floridana (Shuttl.), Reeve, Conch. Icon. ix., Neritina, t. 18. fig. 85 (1855) 
Neritina reclivata (Say), var. rotundata, v. Mart. in Malak. Blatt. xii. p. 61 (1865) °°. 
Neritina reclivata (Say), v. Mart. %» Martini & Chemnitz, Syst. Conch.-Cab. ed. 2, Neritina, 
9 
