532 MOLLUSCA. 
’ 
The specific name ‘“lurulentus” is a problematic Latin word, said to have been 
employed by Apulejus in the second century, in the sense of “ muddy,” allied to 
“luridus” and “ luror,” dun-colour. The more important authors use “lutulentus” in 
the same sense, from “ lutum,” mud. 
7. Anodonta henryana. 
Anodonta henryana, Lea, Proc. Acad. Phil. 1857, p. 102"; Journ. Acad. Phil. (2) iv. p. 878, t. 66. 
fig. 198°,=Obs. Gen. Unio, viii. p. 55, t. 66. fig. 198°; Clessin, in Martini & Chemnitz, 
Syst. Conch.-Cab. ed. 2, Anodonta, p. 141, t. 45. figg. 5, 6*; Fisch. & Crosse, Miss. Scient. 
Mex., Moll. ii. p. 525°. 
Anodon henryana, Sowerby, in Reeve’s Conch. Icon. xvii., Anodon, t. 34. fig, 140°. 
Oblong, rather swollen, summits flat; fore part short, rounded, hinder part distinctly beaked. 
Long. 71; alt. vert. 38, ale: 38, diam. 25 millim. Vertices in 2 long. 
Hab. N.K. Mexico: Matamoros and Tamaulipas (Berlandier }—*). 
Dedicated to Prof. Joseph Henry, Secretary of the Smithsonian Institution. 
PATULARIA, Swains. 
8. Anodonta glauca. 
Anodonta glauca, Valenciennes, in Lamarck’s Hist. Nat. d’Anim. sans Vert. vi. 1, p. 87 (1819) °; 
ed. 2, par Deshayes, vi. p. 569°; Valenciennes, in Humboldt et Bonpland’s Obs. Zool. ii. 
p. 236, t. 1. fig. 2 (1833) °; Delessert, Recueil des Coquilles décrites par Lamarck, t. 13. 
fig. 3 (1841) *; Hanley, Cat. Recent Bivalv. p. 221°; Fisch. & Crosse, Miss. Scient. Mex., 
Moll. ii. p. 533, t. 69. figg. 1, 1 a° [nec A. glauca (Val.), Sowerby, Clessin]. 
Mach rounded, angulated before, ventral margin strongly arcuated; colour bluish-green. 
Long. 100; alt. vert. 55, ale 58, diam. ? millim. Vertices in 3 long. (Figure given by Delessert 4) 
a. Long. 112; alt. vert. 68, alz ?, diam. 38 millim. Vertices in ? long. 
db , 100; 4 55,, 58 ,, 2? 4 . a, 
a. Figure given by Delessert; 6. Measurements of another Lamarckian specimen recorded by Fischer and 
Crosse. 
Hab. W. Muxico: freshwaters near Acapulco (Humboldt }-*), 
Fischer and Crosse ® mention also a specimen given to them by M. Sallé, with the 
locality Nicaragua, which seems to be somewhat doubtful. 
The sinulus of the ligament, according to the figure given by Delessert 4, appears to 
be rather large and deep, but not pointed, A. glauca approaching nearer in this respect 
to the North-American A. grandis, Say, and the Chinese A. woodiana, Lea, than to the 
South-American species of the subgenus Glabaris. For A. glauca of Sowerby and 
Clessin, see A. ciconia, p. 536. 
9. Anodonta globosa. 
Anodonta globosa, Lea, Trans. Am. Phil. Soc. (2) viii. p. 24], t. 24. fig. 56 (1841) ',=Obs. Gen. 
Unio, iii. p. 79, t. 24, fig. 56°; Clessin, in Martini & Chemnitz, Syst. Conch.-Cab. ed, 2, 
