! OUBTH, OK CORONU 11: AN BRAKt II. I'.M 



well with • ind lead us !■• hope that tlii* ma) prove t>> be the adult 



< inly it u verj distinct from the ti ind the characl 



• shown, arc such at one might expect in tli>- first Benili 



Coronicoras Bucklandi, Htati 



it .1. in i , . is •», „ ii. mi rig. it. 



txi 



i \ \\ i. 



Amm. ■■■ \' 



. 

 i Qi'KSST., Ibid , pi. \i. fl 



] i \-i . Ibid , pi. viii, Bg. 1 ''. 



:< \ > i. m . \ 



a i ■ i 



\ \k Binemurier.se. 



III. 1 \g. IX 



This has young which closely resembles the \ oung of Cor. latum. The breadth 

 of the abdomen, divergent Bides, immature folds, nnd tubercles are quite similar. 

 The folds also begin with large tubercles on the first part of the second whorl. 

 On 1 1 1 « - third quarter of the third whorl the true pike begin. After this the 

 abdomen no longer increases so fast in breadth, and finally, upon the latter part 

 of tlii> volution, or the beginning of the fourth, ilii- region is hardly wider than 

 the dorsum, and the Bides flattened, tin the first or Becond quarter of the fourth 

 whorl the pita become duplicate or triplicate, and the broad, thin, abdominally 

 characteristic of ilii- Bpecies arise. These peculiar pita and 

 cur, in some specimens, intercalated with Bingle pita and tuberi 

 ike bending forward upon the abdomen. The keel on the third quai 

 the third whorl was well developed, and must have appeared considerabl} i 

 I hannels were but slightly developed on the first quarter of the fourth whorl, 

 ; i they have well defined ridges, and probably began later than the keel, 

 somewhere perhaps upon the last half of the third volution ; but this could a 



1 • ie specimen from Semur had but two divided pike 

 upon the third whorl; after tlii- thej remained single to the liitli volution, the 



DO I taken from a ;• 



individual o ■ •■ and a half whorls, in which the piloe are all divided. Tin-* 



i in the s| ' i H- w ilhoul any divided p 



The r than the in 



i ibdominal out one half longer than the Biiperioi 



\ • specimen of tl from Semur, Plate III I the 



li\ e and n hall voh 

 -.•Hi or i 

 then ided, ili<- pilns nd <>ii the 



eighth volution, or perhaj the whorl 



