302 



BULLETIN 181, UNITED STATES NATIONAL MUSEUM 



maleri, Amphicyclotus, 184, 185, 220, 

 281, 288. 



Cyclophoms, 185. 

 malleatum, Aperostoma, 187, 188, 189. 



190, 191, 282, 288. 

 nianabense, Aperostoma, 222, 239, 280, 



290. 

 manchesterensis, Ptychocochlis, 83, 88, 



285. 

 uiani, Cyclostoma, 30. 



Farcimeu, 30, 284. 



Megalomastoma, 30. 

 marianua, Ptychocochlis, 88, 97, 286. 

 martensi, Neocyclotus, 95. 



Ptychocochlis, 82, 83, 95, 286. 291. 

 niartianum, Farcimen. 13, 14, 283. 

 martinezi, Buckleya, 152. 



Buckleyia, 151, 152, 154, 280. 287. 



Cyelophorus, 152. 

 niartinicense, Cyclostoma, 140. 

 martinicensis, lucerticyclus, 140. 

 masvense, Ai)erostoma. 223, 254, 280, 



290. 

 mayajiguense, Farcimen, 11, 12, 283. 

 mayariense, Farcimen, 7, 8, 10, 283. 

 mayense, Farcimen, 7, 10, 283. 

 mcsweeni, Aperostoma, 132, 134, 135, 



287. 

 Megacyclotus, 151, 181. 



palenquensis, 182. 183, 281. 288. 



ponderosus, 182, 183, 281, 288. 

 Megaloma, 43. 

 Megalomastoma. 3, 41, 43, 48, 50. 51. 



antillarum, 49, 50, 2S4. 



apertum, 26, 27. 



brunnea, 48, 49. 



brunneum, 48. 49, 284, 285. 



complanatum, 38. 



curtum, 44. 



cyclindraceum, 45. 



dlgitale, 23. 



flavula, 44, 45. 



gealei, 143. 



gi-acilius, 147, 148. 



giiatenialense, 144. 



gundlachi, 28. 



hjalmersoni, 45. 



leoninum, 29. 



mani, 30. 



minor, 16. 



minus, 147, 148. 



mirandum, 9. 



petiti, 48, 49, 50, 284. 



procer, 38. 



seminudum, 7, 19. 



simulacrum, 146. 



torrei, 20. 



tortum, 5, 6. 



ungula, 9. 



verruculosum, 51, 284. 

 Megalomastominae, 3, 43. 142. 

 Megalomastomoides, 3, 48. 50. 



verruculosum, 51. 

 merrllli. Aperostoma. 223, 262, 263, 264, 

 279, 290. 



Mexcyclotus, 151, 179. 



cooperi, 180, 181, 281, 288. 



lutescens, 179, 180, 181, 288. 

 mexicanum, Aperostoma, 173. 



Cyclostoma, 124, 173. 



Cyrtotoma, 169, 173, 174, 281, 288. 



Habropoma, 171, 173. 

 mexicanus, Cyclophorus, 173. 



Cyclotus, 173. 

 milleri, Crocidopoma, 62, 66, 285. 

 mineri, Amphicyclotulus, 54, 55, 58, 60, 



285. 

 minor. Cyclotus, 100, 213. 



Farcimen, 15, 16, 283. 



Megalomastoma, 16. 



Neocyclotus, 260. 



Poteria, 213. 



Ptychocochlis, 84. 100, 286. 

 minus, Megalomastoma, 147, 148. 

 mirandum, Farcimen, 7, 9, 283. 



Megalomastoma, 9. 

 montegoensis, Ptychocochlis, 84, 101, 



286. 

 montezumi, Aperostoma, 151, 152. 

 moricandi, Amphicyclotus. 220. 



Aperostoma, 219, 279, 291. 



Cyclostoma, 220. 

 multilineatus, Cyclotus, 212. 

 multlstriatinum, Farcimen, 31, 32, 284. 

 najazaense, Farcimen. 13, 14, 283. 

 nana, Poteria, 116, 120, 286. 

 nanum, Aperostoma, 223, 262, 263, 282, 



290 

 Neocyclotus, 125, 187, 203. 



affinis, 210. 



ambiguus, 211. 



asperulus, 78. 



bakeri, 137. 



bartletti, 157. 



belli, 201, 268. 



berendti, 212. 



beswlcki, 79. 



bisinuatus, 235. 



bogotensis, 226. 



boucardi, 177. 



eaucaensis, 258. 



chrysacme, 219. 



cingulatus, 228, 253. 



colombiensis, 258. 



eonniveus, 275. 



corpulentus, 217. 



corrugatior, 84. 



corrugatissimus, 110. 



crassus, 113. 



cycloatus, 110. 



dentistigmatus, 120. 



depressus, 247. 



distinctus, 275. 



duffianus, 277. 



dnnkeri, 230. 



dysoni, 208, 209. 



fasclata, 227, 256. 



fischerianus, 258. 



fonticulus. 81. 



gemma, 87. 



