204 
MOLLUSCA. 
^theria \cailUaudi, F4r.]. On some specimens from the country of 
the Shilluk negroes, Central Africa; Gredler, Nachr. mal. Ges. 1875, 
pp. 88 & 89. 
Mycetopus (Orb.) 10 species, all South American, except one doubt- 
ful, described and figured ; S. Clessin, in Kiister’s Conch. Cab. pt. 239, 
pp. 198-208, pis. Ixvi.-lxx. 
Spatha (Lea). The mantle-lobes form two distinct orifices, the respi- 
ratory and the anal, separated from the general ventral opening ; the 
laminae of the gills are united in perpendicular rows ; the anterior pedal 
muscle is united with the anterior adductor ; and the under muscle for 
fixing the abdominal sac is very large. 6 species, all African, are 
described and figured. Id. 1. c. pt. 234, p. 183 et seq. pis. Ixi.-lxiii. 
Mutela (H. & A. Adams). Mantle lobes united as far as the middle 
of the ventral margin, with two stout siphons ; shell gaping in front ; no 
teeth. 6 species, all African, described and figured. Id. 1. c. pts. 234 
& 239, pp. 191-198, pis. XXV., lx. & Ixii. 
MyTILIDJ]. 
Mytilus edulis (L.). Particulars concerning the circulating and respi- 
ratory organs ; M. A. Sabatier, C. R. Ixxix. [1874] pp. 681-584, transr 
lated, Ann. N. H. (4) xv. p. 157-169. Young specimens partially blind- 
ing a shore crab ; Macintosh, Mar. Invertebr. of St. Andrews, pi. ix. 
figs. 10 (S: 11. Variety from Bergen; Metzger, Ber. Unters. Pomme- 
rania, p. 353. • 
Mytilus muelleri and exiguus, Bunker, JB. mal. Ges. ii. pp. 250 & 251. 
Desterro, S. Brazil ; M. tasmanicus, J. E. Tenison-Woods, P. R. Soc. 
Tasm. 1875 (sep. copy), p. 29, Tasmania: spp. nn. 
Modiola lacustris, sp. n., E. von Martens, SB. nat. Fr. 1875, p. 84, 
Mal. Bl. xxii. p. 2, and Novitat. Conchol. pi. cxxxv. figs. 2 & 3, Lake 
Tungting, China. 
Modiola siamerisis (Morelet, 1866, as Dreissena), Lake Tonli-sap, be- 
tween Siam and Cambodia ; Morelet, S<^riQS Conch, iv, p. 365, pi. xvu. 
fig. 3. 
Aviculid.®. 
Malleus alhus (Lam.) and regula (Porsk.) = vulsellatus (Lam.) ; notes 
on their forms from Red Seai specimens by W. Bunker, JB. mal. Ges. 
ii. pp. 4 & 5. 
Crenatula picta (Gmel.) = phasianoptera, mytiloides^ modiolaris, and 
avicularis (Lam.), C. nigrina (Lam.), = avicularis (Sow. gen.), = myti’- 
hides (Reeve, not Lam.), and C. folium (Gray), all from the Red Sea ; 
id. 1. c. pp. 3 & 4. 
Vulsella lingulata (L.), = mytilina (Lam., Reeve), V. minor (Chemn.), 
= rugosa (Lam.), = spongiarum (Lam.), and V. Mans (Lam., = iso- 
cardia, crenulata^ and linguae felis (Reeve), all from the Red Sea ; id. 
1. c. pp. 1-3. 
Pinna tasmanica^ sp. n., J. E. Tenison Woods, P. R. Soc. Tasm. 1875 
(sep. copy), p. 29, Tasmania. 
