1870. ] MR. G. B. SOWERBY ON NEW SHELLS. 251 
AMATHINA TRIGONA. 
A. testa parva, solida, superne complanata, medio carinis duabus di- 
stantibus divergentibus, et infra medium costellis tribus spiraliter 
radiata, infra costas planata ; apice parvo, acuminato ; apertura 
> magna, trigona; margine basali declivi, oblique producto. 
Hab. Tongataboo, Friendly Islands (Mr. Brazier). 
This new dmathina has two widely diverging principal keels or 
ribs, above which is a broadly flattened, depressed area, and below 
which are several small ribs and a plain space. 
ELENCHUS DILATATUS. 
E. testa brevi, subcinerea, spiraliter subdistanter lirata ; spira brevi ; 
anfractibus quatuor, ultimo lato ; apertura dilatata, viridi-ceruleo 
tridescente. 
Hab. New Zealand (Mr. Brazier). 
Remarkable for the expansion of the last whorl. 
SoLARIELLA UNDATA. 
S. testa subdepressa, umbilico rotundo usque ad apicem perforata, 
margaritacea, pallide rubescente, spiraliter tenuiter lirata, supra 
prope suturam angulata ; medio anfractuum carina rotundato-angu- 
lata, angulis distanter rubro maculatis ; interstitiis rubro undato- 
lineatis. 
Hab. Agulhas Bank, S. Africa. 
Mus. Taylor. 
CyLLENE RUBRO-LINEATA. 
C. testa ovato-acuminata, albido-fulvescente, ad dorsum pallide pur- 
purea; spira breviuscula, acuminata ; anfractibus numerosis, longi- 
tudinaliter oblique liratis ; apertura longitudine spiram superante, 
intus castanea, labio columellari late reflexo linea rubra circum- 
scripto ; labio externo intus striato, extus post marginem incras- 
sato; sinu antico parvo. 
Hab. 2 
Mus. Taylor. 

Typuis pupLicatus. (Plate XXI. fig. 1.) 
T. testa ovato-acuminata, inter varices castanea, varicibus arcuatim 
recurvis cum tubis interstitialibus junctis, tubas latas complanatas 
duplicatas efformantibus ; spira acuminata ; apertura subrotunda ; 
canali elongato, clauso. 
Hab. China Seas. 
A second example of the peculiar form first presented by T. ar- 
cuatus, Hind., in which the varix is bent back towards the intersti- 
tial tube so as to form a double varix with a single opening. In the 
present case the union is less complete, and the opening part of the 
tube is broad, flattened, and contracted in the middle, so as to 
appear duplicate. 
