SMITH : ANNAM LAND-SHELLS. 1 1 



Rhtssota PEEGEANDIS. 



Testa magna, sinistrorsa, depresse conoidea, obtuse carinata, pro- 

 funde et mcdiocriter late umbilicata, solidiuscula, supra fusca, apicem 

 versus pallidior, rufescens, hie illic colore saturatiore oblique et 

 arcuatim strigata, ad carinam pallida, infra zona latissima nigro-fusca 

 ornata, circa umbilicum olivaceo-lutescens ; anfractus 5^ celeriter 

 accrescentes, convexiusculi, lineis incrementi validis, valde obliquis et 

 arcuatis, striisque spiralibus numerosis granulatis decussatis (in anfr. 

 nit. sensim evanidis) ornati, ultimus ad peripberiam acute angulatus, 

 antice baud descendens, infra medium baud granulatus ; spira brevis, 

 ad apicem obtusissima ; apcrtura perobliqua, intus subopalescens, 

 bipartita, parte superiori albo-cserulea, inferiori saturate nigro-fusca ; 

 peristoma validum, vix incrassatum, ad marginem dilute fuscescens, 

 margine inferiore maxime recedente, columellari late sinuato, ad 

 insertionem expanse. Diam. maj. 78 mm., min. 64; alt. 40. 

 Apertura 39 lata, 30 alta. Hah. — Annam. 



This species is as large as R. Brookei, Adams and Reeve, from 

 Borneo, and like that shell, it is sinistral. It is, however, more 

 depressed, thinner and openly umbilicated. It is a very fine species 

 and cannot be mistaken for any of the known sinistral forms. 



JRIcyssola pergrandis, n.sp. Helix (Eadra) pachycliilus, n.sp. 



Helix (Hadea) pachtchiltjs^ 



Testa dcxtrorsa, late et profunde umbilicata, orbicularis, sub- 

 conoidalis, carinata, valida, crassa, flavescens, versus apicem rubescens, 

 lineis angustis spiralibus pluribus rufis prDecipue infra peripheriam 

 ornata, ad carinam zona angusta saturatiore cincta, in umbilieo 

 interdum rufescens : anfractus 5 convexiusculi, sublente crescentes, 

 undique minute granulati, lineisque incrementi sculpti, ultimus 

 postice forte carinatus, carina antice plus minus evanescente, baud 

 descendens ; spira paulo elata, ad apicem obtusa ; apertura fere 

 horizontalis, alba, linea mediana rufescente dimidiata, late limata ; 

 peristoma maximum, late expansum et reflexum, album, ad marginem 

 pallido-rufo tinctum, in medio ad linea3 finem rufo notatum, margine 



1 The Publication Committee greatly regret the descrijjtion of this species has been 

 forestalled in a manner that calls for special comment and protest. While these 

 sheets were preparing for the press, the holder of the type specimens being on a visit 

 to the United States exhibited examples to a well-known conchologist there, 

 and left one with him. The latter individual at once proceeded to describe 

 and figure the species, although he had been informed that it was Mr. Smith's 

 intention to do so. It is true that he has adopted the author's specific name and even 

 added " Smith MS." ; but the right of priority is nevertheless taken from 

 Mr. Smith. Further comment is imnecessary. 



