LAMELLIBRANCHIA, 
Moll, 69 
Jibrosus, spurius^ microstictus, polystictus, modestus, and biesianus, figured, 
id. 1. c. fasc. ii, pis. ix.-xivr. U. p>olyfr'ticto-scriptas and scripto-poly- 
stictus, believed to be hybrids ; id. 1. c. fasc. ii. pi. xiii. figs. 26. & 27. 
[These and some of the preceding may be varieties of U. plumbeuSy 
Chemnitz (as Chama), = nodulosus, Wood, Reeve, known long ago.] 
Unio coniortus (Triquetra), Lea ; id. 1. c. pi. xv. figs. 31-33. 
Unio semialatus, crossii, comptus, anceps, fabagina, and broti, spp. nn., 
Deshayes & Jullien, N. Arch. Mus. x. pp. 123-130, pis. vi. figs. 1-12, vii. 
figs. 1-6, Cambodia. 
Unio {Arconaia) delaportii^ sp. n., Crosse & Fischer, J. do Conch, xxiv, 
p. 327, pis. X. fig. 1, xi. fig. 6, Cambodia, province Compong-Soai. 
Unio : 8 species figured by Hanley & Theobald, Conch. Ind. pt. viii. 
pis. cliv. & civ. 
Unio lunulatus [script, unulatus]^ sp. n., Pratt,- P. Davenp. Ac. i. 
pp. 167 & 168, pi. xxxi., Mississippi River, near Davenport, Iowa. 
Monocondylcea. The 6 species established by Orbigny, with M. Icnti- 
forniis (Lea), pazi (Lea), and franciscana (Morelet), all from South 
America, are described and figured by Clessin in the continuation of 
Kiister’s new edition of Chemnitz, Anodonta, &c., pp. 244-252, pis. Ixxiv., 
Ixxviii., & Ixxix. 
Monocondylcea nanJcingensis, sp. n., Heude, Conch, fluv. de Nanking, 
pl. iv. fig. 9, China. 
Pseudodon harmandi, sp. n., Crosse & Fischer, J. c]e Conch, xxiv. 
p. 331, pl. X. fig. 2, Cambodia. Monocondykea tumida (Morelet), Des- 
hayes & Jullien, N. Arch. Mus. x. (1874) p. 117, pl. v. figs. 1-3, Mekong 
River, Cambodia ; two specimens preserved in spirits are described, 
they exhibit specific but not organic or generic differences from Unio or 
Anodonta. 
Microcondylcea compressa (Lea, Monocond.), Siam, wlieatlcyi (Lea), 
Malacca, cumingi (Lea), Malacca, saulcii (Bourg., Unio), Syria, mouho- 
tiana (Lea), Siam, described and figured by Clessin in Kuster’s new 
edition of Chemnitz, pp. 258-261, pis. Ixxx., Ixxxii., Ixxxiii. & Ixxvi. ; 
Alasmodonta bonellii (F6i\), rJiomboidea (Lea), planulata (Lea), vandem- 
buschiana (Lea), and fragilis (Mouss.), are also placed in this genus ; 
id. 1. c. p. 257. 
Margaritaiia spilhnanni (Lea), alabamensis (Lea), elliotti (Lea), con- 
nasaugensis (Lea), etowahensis (Lea), elliptica (Lea), arcula (Lea), 
quadrata (Lea), and dehiscens (Say) = oriens (Lea), all from North 
America, tripolitana (Bourguignat), Syria, mardinensis (Lea), Mesopo- 
tamia, described and figured by Clessin, 1. c. pp. 264-274, pis. Ixxx.-lxxxiii. 
& Ixxxvi. 
Aiiodonta id,rina (Spinelli) and debettana (Martinati), Upper Italy ; 
Kobelt, Icoiiogr. iv. pp. 67-69, pl. cxx. Pearl-bearing specimens of 
Anodonta cygnea (L.) and variabilis (Drap.), in the lake of AlicOj Lom- 
bardy, Issel, Bull. mal. Ital. (2) ii. p. 51. 
Anodonta edulis (Heude, 1874) Heude, Conchyl. fluv. de Nanking, 
pl. viii. fig. 18. 
Anodonta gibba (Bens.), Martens, in Pfeiffer's Novitat. Couch, iv. 
p. 159, pl. cxxxvi. figs, 6 & 7, China. 
