— 438 



Pages. 



Margin'Ella lœvigata Braz... 99 



— Louisœ Bav H-i 



— Mariei Cr. 99, 100, 102. 104 



— Metcalfei Ang ^î^ 



— miliaris L 9^ 



— — var. Jullieni Bav. 



n. var 96 



— nympha Braz 100 



— occulta Monts 108 



— oryza Lk 66 



— Osteri Jouss lU 



— Philippii Monts. 6(i 



— pulvis Jouss 114 



— pygmcca Iss 99 



— pygmfca Sow 100 



— recondita Mont-s 66 



— Roberti Monts, n. sp... 104 



— sécréta Monts 6G 



— Serrei Bav 114 



— Simeri Adans 66 



— sueziensis Iss 108 



— Tomlini Bav. n. sp 102 



— turbiniformis Bav. n. 



sp "J^ 



M.-vRGiNELLOPSis Serrei Bav.. 114 



Massotia lactea Micli 67 



Massyl.î;a (S.-G.) 135 



Mathildia (G.) ^3 



Meretrix cliione L 146 



— medilerranea Tib 146 



Merope (S.-G.) 381 



— cT?gypUaca Chemin 389 



— anatinoides Bve 357 



— californica Desli 385 



— capiilacea Desli 392 



— nicobarica Gm 389 



— pellucida Chemn 384 



— plicatilis Desh 393 



— senegalensis Phil 393 



— Solanderi Gr 391 



— Stimpsoni Dali 393 



— thracioides Ad. et Rve. 38i; 

 Mi.sooESMA erycinœuni Lk... 176 



— glabralum Gm 19'^ 



— maclroides Desl i 402 



— iS'ovœ ZelandicÇ Ch 221 



Pages. 



Mesodesma solenoldes Gr 401 



— striatum Ch 210 



Metabola (G.) 395 



— acinaces Q. et G 396 



MICROFUSUS (nov. Sect.)... 413 



MiCROM.\CTRA (Sect.) 179, 252 



— californica Gonr... 179, 252 

 "■MiOR-ANGiA (Sect.) 343 



Mitrella scripta ]. 143 



MoDioLA barbata L 69 



MonioLARtA costulata Risso.. 69 



— marmorata Forb 69 



— Petagnae Se 69 



— sulcata Risso 69 



MoNTACUTA ferruginosa Mtg. 



var. stricta Monts 69 



MouLiNiA (G.i 329 



MuLixiA (G.) 174, 329, 343 



— angalata Gr 336 



— antarctica Dkr 338 



— bicolor Gr 332 



— bistrigata Môrch 336 



— Bradleyi Dali 338 



— Branneri Dali 342 



— byronensis Gr 333 



— carinulata Desh 336 



— coloradoensis Dali 338 



— coquimbana Phil. 334, 342 



— donaciformis Gr 335 



— edulis Kg 329, 330 



— exalbida Gr 335 



- Gabbi Tryon 338 



— guadelupensis Réel. 



337, 340, 341 



— isabelleaua d'Orh 342 



— lacimiala Cpr 267 



— lateralis Say 312, 338 



— levicardo Sm 333 



— modesta Dali 388 



— modesta Sloat 336 



— notata Hutt 258, 259 



— obtusa Mke 338 



— pallida Br. et S 335 



— patagonica d'Orb 342 



— pinguis Cr. et F. 313 



— portoricensis Sh 341 



— Bodatzi Dkr 211, 330 



