MADEIRAN GROUr. 229 



ferraria' — from which nevertheless they are totally distinct. 

 I wrote expressly to the Baron at the time, in order to find out 

 the exact spot in which they were collected ; and in a letter now 

 before me, dated Dec. 1st, 1864, he says : ' Je peux vous assurer 

 avec toute certitude que la Pupa que vous demandez a ete 

 prise en ahondance dans un seul endroit du Porto Sancto, 

 que les naturels du pays appellent " Cabeco da Malhada," qui 

 est situe dans i'extremite occidentale de Porto Sancto, vis-a-vis 

 de VRheo de Baixo.'' From which it would appear that its 

 habitat is not very remote from that (namely the Ilheo de 

 Baixo) in which its near ally, the P. relevata, was met with by 

 Mr. Lowe and myself. 



En a subfossil state, the P. comeocostata occurs sparingly in 

 the calcareous deposits of the island, — it having been found, 

 both by Mr. Lowe and myself, I believe at the Zimbral d'Areia. 



Pupa relevata, n. sp. 



P. elongata, parallela, cylindrica, solida, opaca, brunnea 

 (obsolete subcanescens), argute costata ; anfractibus 7-8 con- 

 vexis ; apertura subrotundata, peristomate corneo protenso aut 

 relevato (i.e. completo aut undique continuato, et ultra anfr. 

 ult. exstante,— quasi collo brevi separato), 4-plicata, plicis 

 brevibus et (exteriore ventrali paululum excepta) valde im- 

 mersis inconspicuis, sc. 2 ventralibus, 1 columellari,et 1 (media) 

 palatali ; columellari 2da superiore nulla, palatalibusque 1 ma 

 et 3tia minutis, rudimentalibus, fere obsoletis ; ventrali interna 

 parva, profunde immersa; labro extus vix sinuato, denticulo 

 minutissimo interno et fere obsoleto, sinu indistincto. — Long. 

 Un. 1^-2. 



Habitat ins. de Baixo, juxta Portum Sanctum ; a Eevdo. R. 

 T. Lowe et meipso in rupium fissuris submaritimarum lecta. 



The elongate, linear, cylindric form of this large and solid 

 Pupa, added to its opake reddish-brown surface (which is 

 generally a little whitened, or as it were powdered, with a sort 

 of calcareous deposit), its rather tumid and powerfully costate 

 volutions, and (above all) the peculiar construction of its aper- 

 ture — the peristome of which is much developed and con- 

 tinuous, standing-out from the body-volution by almost an 

 appreciable neck — will sufficiently distinguish it from its allies. 

 Its plaits are short and very deeply immersed, the first ventral 

 one being alone conspicuous : of those on the columella the 

 upper one is entirely absent, and even the lower one abbreviated 

 and remote ; whilst of the palatial three, the upper and lower 

 ones are small and rudimentary. 



The P. relevata was detected by Mr. Lowe and myself, 



