Rev. R. T. Lowe on a new Madeiran Pupa. 81 



XVII. — Description of a new Madeiran Pupa. 

 By R. T. Lowe, M.A. 



Pupa Wollastoni, Lowe. 



(§ Alvearella, Lowe.) 



T. majuscula, solidiuscula, eompacta, curta, late abbreviato-oblonga, 

 utrinque obtusa, latitudiiie per anfractus 2-2| ultimos subsequali 

 |-f longitudinis sequante, delude subito per reliquos anfractus in 

 apicem umbonato-prominulum eontracta, tota obsolete striatula 

 laevigata nitens fusco-umbrina (spira apicem versus alba decorti- 

 cata), angustissime pallide 1-2-fasciata; anfractibus sex plauatis v. 

 convexiusculis, 2-3 ultimis infra suturam subcanaliculatam abrupte 

 gibboso-prominentibus scalatis, ultimo antice medio distinctius con- 

 caviusculo v. leviter pone labrum spiraliter subcanaliculato, striolis 

 subflexuoso-obliquis obsoletis transversis, sutura impressa exarata 

 profunda ; apertura subtrilobato-auriformi s. triangulari, angulis 

 rotundatis, ringente, 5-plicata, plicis 2 ventralibus exteriore ma- 

 jore, 2 columellaribus inferiore majore, 1 palatali, 2 ventralibus 

 columellarique inferiore subsequalibus conspicuis magnis, colu- 

 mellari superiore palatalique minoribus subinconspicuis immersis ; 

 labro subincrassato reflexiusculo superne inflexo-sinuato, denti- 

 culo ad sinum distincto intus prominulo, sinu respirationis sub- 

 completo distincto. 



Longit. 3 millim. ; diam. 2^-, apert. 1 longa, 1 lata; anfr. 6. 



Hah. in ora Maderse septentrionali, inter exempla baud pauca P. 

 concinnce Lowe, in convalle " Rib. do Inferno " (ut fertur) propter 

 illustr. Baronem do Castello de Paiva collecta, a cl. Wollastono 

 detecta. Nomen itaque ferat species pulcherrima in honorem 

 oculatissimi Puparum Maderensium indagatoris, qui tantis specie- 

 bus novis genus jam olim locupletavit. 



At once distinguisbed from P. concinna Lowe by its much 

 greater proportionate breadth and short, thick, squarish figure ; 

 and from P. gihba and P. abbreviata, besides other differences, 

 by its being so much larger. There is also much about it which 

 reminds one of P. cassida and P. cassidula : but it is most di- 

 stinct from all, especially by the abrupt contraction of the spire 

 above the last two or three volutions, and by the scalariform 

 character of these, each rising up into a blunt keel or ridge 

 below the deeply impressed or subcanaliculated suture. The 

 colour also is peculiar, being more of a dark umber than chestnut- 

 brown, with two remote, narrow pale bands, one at the base, 

 the other on the infra-sutural ridge or shoulder at the top of the 

 last volution ; but these will probably prove variable, and even 

 in the present example the upper band is obscure and incon- 

 spicuous. The spire is abruptly contracted above the second or 

 third volution into a short obtuse decorticated umbo ; the lowest 

 two or three volutions are of nearly equal breadth, or broadly 



