On (he (Jcuus Smithi i, Maltzan. I'J'J 



a cloudy ill-dcfincd uliite spot below and bo^oiid di.sco- 

 cellulars. Hind witi:^^ l)io\v'ni.sli grey. 



Length of fore wing Hi nun. 



Huh. Fontc Boii/ Upper Amazon, M ly 190G (5. M. 

 Klatjes). 1 cJ. 



79. ^^eri'fos sieinhiichi, sj). n. 



?. Pectus and legs grey; auteun£B fuscous; head and 

 tegulie orange ; thorax and ahdonen grey. Fore wing 

 grey, ncrvures darker. Hind wing da'k grey. 



Length of fore wing 12 mm. 



Hah. Buenavista, East Bolivia, 7.^0 metres, Aug. 190(5- 

 April 1907 {J. Sltinhach). 1 ? . 



XXVII. — S^ole on the Genus Smithia, Maltzan. 

 By Edgar A. Smith, I.S.O. 



(Published by permission of the Trustees of the British Museum.) 



The genus Smithia was founded by the late Baron IL von 

 ^laltzan * for a remarkable marine shell from the Island of 

 Goree belonging to the family Turriteliidge. Its peculiarity 

 consists in the whorls being uncoiled in corkscrew fashion. 

 Otherwise it agrees in the character both of the shell and 

 operculum with Turritel/a and Mesalia. Maltzan compared 

 it with Eglisia, but that genus is said to have a pancispiral 

 operculum, whereas in Smithia it is concentric and multispiral. 



It has been pointed out by the late Dr. E. von Martens f 

 th;it tilt! generic name Smithia had previously been employed 

 in zoology by Edwards and Ilaime (1851), Saus^ue (1^.55), 

 and Mabille (1879). 



The Museum having recently acquired a specimen of this 

 curious shell, it has become necessnry to invent a new generic 

 name. I would have liked to return the Baron's compliment, 

 and to propose Mnllzania; but that appeUation having 

 already been employed in Reptilia by Dr. O. Boettger, I 

 would suggest C'llbslracwn as suitable tor the designation of 

 this most interesting genus. 



• Nachrichtsblatt deut«ch, malak. Gesell. 1883, p. 97, fig. 

 t Zool. Record, 1883, Mollusca, p. 40. 



Ann. ((' M<u,. .V. Hist. Scr. 8. Vol. iv. 17 



