92 
RHAPHAULUS. 
3. ehrysaHis Pfr. (Pfr. in Novit. conch. I. p. 75.— 
Bens, in Ann. and Mag. 2d. ser. XVill. p. 254.— 
Cyclosl. chrysnlits Pfr. Proc. 1852. p. 158. — Ch. 
ed. nov. p. 239. t. 31. f. 23. 24. — Megalomast. 
chrysalis Pfr. Mon. Pneum. n. 11 .— Gray Phan, 
p. 92. — Ad. Gen. p. 284. — Ananias chrysalis 
Bens, in Ann. and Mag. 2d. ser. XVII. p. 342. — 
Specimen perfection , prope Maulmain imperii Bir- 
mani lectum colore castaneo , tuboque elongate su- 
turali praeditum est, teste Cl. Benson 1. c.) . . . Mon. p. 131. 
XIII. Streptaulus Benson. 
Testa umbilicata pupiniformis, nitens ; peristoma circulare, 
non continuum, superne tubulo suturali interno et externo, 
continuo, ad extremitates ambas aperto , siphonem mentiente, 
perforatum. — Operc. ? 
Streptaulus Bens, in Ann. and Mag. N. H. 2d. ser. XIX. 1857. 
Genus inter Rhaphaulum et Alycaeum quasi intermedium, 
textura et colore priori similius et strictura characteristica al- 
terius omnino carens. *) 
i Str. Biaiifordi Bemon. 
T. umbilicata, oblonga, polita, regulariter oblique striata, 
striis prope suturam submarginatam fortiori bus, lineis non- 
nullis spiralibus decussatis, fusco-cornea , translucens ; spira 
convexo-conica, apice obtusiuscula ; anfr. 5 convexiusculi, pen- 
ultimus ventricosior ; umbilicus angustus, impervius; apertura 
rnagna, subcircularis ; perist. simplex, reflexum , subrevolutum, 
marginibus callo parietal! tenui junctis; tubuli suturalis pars 
externa longa, pone junctionem labri breviter arcuatim elevata, 
suturam subtus exhibens. — Long. T 1 /^ diam. 5 mill. Long, 
apert. (peristomate incluso) 4 mill. (Mus. Benson.) 
Streptaulus Blanfordi Bens . in Ann. and Mag. N.H. 2d. ser. XIX. 
— — Pfr. Novit. conch. !. n. 230. t. 37. f. 1 — 3. 
In Streptaulus the tube is first internal, and on arriving at the aper- 
ture is suddenly reflexed , and instead of forming an opening in the lip 
above the aperture as in Rhaphaulus bombycinus , or ending in a short 
upright tube as in R. Lorraini or Chrysalis Pfr., it decribes a short arch 
behind the lip , and then runs to some distance along the external suture, 
as in Alycaeus. (Bens. 1. c.) 
