LAM aLLIBKANCHlATA. 
Moll. 101 
Castalia undosa, sp. n., Brazil, v. Martens, (254) p. 148 ; see also 
Nehring (276). 
Dipsas occidentalism sp. n., Sechuan, Heude, (172) p. lxvi. 
Microcondylus bonellii , incl. M. moreleti , Drouet ; M. truncatus , sp. n., 
Lake Garda : Drouet, (108) pp. 110 & 117. 
Mutela bourguignati , sp. n., Central Africa, Bourguignat, (41) p. 8. 
M. soleniformis , sp. n., Tanganyika, t. c. p. 25. Remarks on the genera 
Mutela and Iridina ; id. op. cit. pp. 9-12. 
Mycetopus ccrmatus, Taipingfu, M. succineus, Nganhoue, M. cceruleus, 
Nganhoue, M. viridis, Nganhoue, M. triangularis , Sechuan, spp. nn., 
Heude, (172) pis. lxx.-lxxii. 
Pseudodon aureus, id. t. c. pi. lxxii. fig. 140. P. chaperi, sp. n., Perak, 
de Morgan, (270) p. 423, pi. ix. figs. 1 & 2. 
Spatha droueti, sp. n., Senegal, near S. clcihomeyensis and S. senegalensis, 
Lea ; Chaper, (72) p. 43, pi. i. figs. 1-3. S. bourguignati , sp. n., Cen¬ 
tral Africa, Bourguignat, (41) p. 12 ; genus divided into 3 subgenera, 
Spatha , Spathella , Aspatharia. 
Unio polii, Rome, U. subcylindricus, Ticino, U. idrinus, Lakes Idro and 
Iseo, U. etruscus , Pisa, U. campanus , Naples, &c., U. meridionalis, Castel- 
lamare, U. langobarclus, Mincio, U. brianteus, Lake Santirana, U. nitidus , 
Turin, Modena, U. siliquatus, Turin, U. benacinus, Lake Garda, JJ. minus- 
culus, Lake Garda, spp. nn., Drouet (108). U. dolcici , U. serbicus, U. 
truncatulus, U. xivalis , spp. nn., Servia, id. (109). U. douglasice, Gray, 
includes U. dactylinus , TJ. hainanensis, U. firmus, TJ. chloreus , U. osbechii , 
and U. nux-persica ; Heude, (172) pis. Ixv. & 1 xv.bis. U. schomburgianus, 
sp. n., Central China, id. t. c. pi. lxxii. U. margaritifera (sub. n. Margari- 
iana margaritifera , L.) : very full synonymy and description ; Borcher- 
ding (37) pp. 147-165. TJ. zeniaticus, Letourn., figured by Issel, (193) 
p. 13 (= TJ. punicus, Issel). TJ. soleilleti, TJ. ilgi, TJ. meneliJci , TJ. hamy- 
anus , TJ. alfierianus , spp, nn., Shoa, Bourguignat, (39) pp. 39-44. TJ. calthus, 
sp. n., Tanganyika, id. (41) p. 23. TJ. raticlotus, p. 166, TJ. dumesnilianus, 
p. 168, M. billottianus, p. 170, TJ. euphynu-s, p. 172, spp. nn., Bagamoyo, 
Zanzibar, Charmes (74). TJ. vaalensis, S. Africa, TJ. essoensis, Assinie, 
spp. nn.,. Chaper, (73) pp. 480-483, pi. xi. figs. 1-3 & 7-9. TJ. perahensis, 
sp. n , Perak, de Morgan, (270) p. 424, pi. ix. figs. 3 & 4. TJ. cequatorius, 
sp. n., Mayumba, Mouth of Congo, Morelet, (268) p. 31, pi. ii. fig. 9- 
U. guppyi, sp. n., Shortland I., Solomon Is., E. A. Smith, (340) p. 608 ? 
pi. xxxvii. figs. 8 & 85. TJ.jolyi , sp. n., Algiers, Kobelt, (210) p. 22, pi. xli. 
fig. 256 ; U. mejerdce , TJ. micelii , spp. nn., Tunis, id. t. c. pp. 23 & 24, 
pis. xlii. & xliii. : also some two dozen species figured for the first time. 
TJ. margaritiferus : notes on capture of ; Japp, Scot. Nat. viii. pp. 62- 64 
& 113-115. The formation of a byssus by TJnio is discussed by Larkin, 
Science, iii. p. 302, 1884, and Lea, t. c. p. 434. 
Iridinid^:. 
Contains the following genera:— Mutela, Scapoli, Burtonia, Bourg., 
Brazzcea, Bourg., Moncetia, Bourg., Gameronia , Bourg., and 11 species ; 
Bourguignat, (41) pp. 37-39. 
