13IVALVIA. 
Moll 85 
Unionid^e. 
First development of some Unionidm observed by SciiiERHOLZ & 
Braun [see in the general subject, supra, p. 12]. 
Unio litoralis var. n, acarnanicus, Lake of Vrachori, and var. pianensis 
(Farines), rothi (Bourg.), hosnensis (Mollend.), jacquemini (Dupuy), 
nanus (Lam.), elongatulus (Miihlf.) var. haudoni (Drouet), requieni (Mich.), 
var., all from Southern Europe, and phaseolus (Held.), Inn River ; Kobelt, 
Icon. vi. pp. 40-44, pis. clxi.-clxiii. figs. 1638-1649. 
Unio andersonianus (Nevill, 1877), foUaceus (Gould) j^var. fraqilis 
(Nevill, 1877), (Theobald), and bonneandi (Eyd. & Soul.) ; Ander- 
son, Zool. researches during the Yunnan Exp. pp. 900-902, pi. Ixxx. 
figs. 8-12, Yunnan and Upper Burma. 
Unio subrostraius (Say) distinct from iris (Lea), but identical with male 
soecimens of nashvillianus (Lea), occurs in Indiana, Illinois, Iowa, 
Nebraska, Tennessee, Mississippi, and Alabama ; Lewis, P. Ac. Philad. 
1878, pp. 273-275. 
l^M'argaritana'] Unio margaritifer (L.) living in the aquarium at Dublin 
since April, 1872 ; Friedel, Zool. Gart. xix. p. 276. 
Dipsas parvulus\-a'], sp. n., Heude, Conch, fluv. de Nanking, iv. 
pi. xxxiii. fig. 65, China, province Ngan-houe. 
Anodonta. On its parasites, especially Bucephalus ; Ulicny, Arch. f. 
Nat. xliv. pp. 215-217, pi. vi. fig. 5. 
Anodonta complanata (Ziegl.), moulinsiana (Dupuy), =. piscinalis var., 
normandi (Dupuy), and coarctata (Potiez & Mich.) ; Kobelt, Icon. vi. 
pp. 44-46, pis. clxiv. & clxv. figs. 1650-1659. 
Anodon globosula, piscatorum, doliolum, elliptica, fusca, friniana, tor- 
rentis,joretl striata, and pacijica, spp. nn., Heude, Conch, fluv. de Nan- 
king, iv. pis. xxv.-xxxii., China, in the provinces Ngan-houe, Kiang-su. A . 
fenouilii, sp. n., id. 1. c. pi. xxxi. fig. 64, Yunnan. A. harlandi (Baird, 
1867) 1. c. pi. XXV. fig. 55. 
MytilidvE. 
Modiola fluviatilis^ sp. n. (= securis, Hutton, 1873, nec Lamarck), Hut- 
ton, J. de Conch, xxvi. p. 53, New Zealand, mouth of rivers. 
Modiolaria laevigata (Gray), distinct from discors (L.), and corrugata 
(Stimps.), G. O. Sars, Moll. arct. Norveg. pp. 29 & 30, pi. iii. fig. 3, and 
pi. xix. fig. 2. 
Crenella laevigata (Gray) and Icevis (Beck), Novaya Zemlya, the pos- 
terior strisB distinct in young shells, obsolete in adults ; Leche, Sv. Ak. 
Handl. xvi. (2) p. 33. 
Dacrydium vitreum (Moller), Lofoden, 200-300 fatb., Finmark, 30-40 
fath. ; Sars, 1. c. p. 28, pi. iii. fig. 2. 
Aecidj;. 
Area glacialis (Gray) and pectiinculoides, var. n. grandis, 13 mm. long, 
9-10 high, both living in the Kara Sea ; Leche, 1. c. pp. 29-31, pi. i. figs. 
8 & 9. 
