2. RiMULA CuMiNGii, A. Adams. R. testd parvd, ovatd, opacd, 

 costellis longitudinalihus, radiantibus, lineisque transversis, eras- 

 sis, concentricis, canceUatu ; cancelli transversi, elongati ; costis 

 nodidosis, subcBqiialibus, prominentibus, distantibus, anteriori- 

 bus duabus antice divergentibus, interstitiis costellis duabus in- 

 striietis, perforatione elongatd, subquadratd. 



Hab. Eastern Seas. Mus. Cuming. 



3. BiMTJLA CARiNATA, A. Adams. R. testd parvd, ovali, costel- 

 lis simplicibns, permultis, confertis, longitudinalibus, radianti- 

 bus, ornatd; interstitiis cancellatis ; cancelli punctiformes ; cos- 

 tellis duabus anterioribus, antice convergentibus, et apud aper- 

 turce marginem junctis ; interstitiis, supra perforationem, con- 

 vexis, supra verticeni extendentihus, quasi earind; perforatione 

 ovali, angustd, antice angiistatd. 



Hab. Cagayan, province of Misamis, island of Mindanao, on dead 

 shells, 25 fathoms, sandy mud {H. C). Mus. Cuming. 



4. RiMULA PROPiNQUA, A. Adams. R. testd parvd, elongato- 

 ovali ; costellis prominentibus, asperis, longitudinalibus, ra- 

 diantibus, subdistantibus ; interstitiis valde cancellatis; can- 

 celli ti-ansversi, subquadrati ; costellis duabus anterioribus, 

 antice convergentibus, ad apertures marginem junctis ; perfo- 

 ratione angustato-ovali, antice acuminatd. 



Hab. Catapan, Philippines. Mus. Cuming. 



9. A Monograph of Puncturella, a genus of Gasteropodous 



MOLLUSCA, belonging TO THE FAMILY FlSSURELLID^. 



By Arthur Adams, R.N., F.L.S. etc. 



Genus Puncturella, Lowe. 



Head proboscidiform, tentacles subulate, with the eyes on swell- 

 ings at their outer base ; sides with a range of cirrhi, interrupted be- 

 hind on each side ; mantle-margin simple ; branchial plumes two ; 

 anal siphon prominent, forming a truncated membranous canal pro- 

 jecting from the subapical perforation. 



Shell conical, with an elevated, slightly recurved, obliquely spiral 

 entire vertex, turned towards the posterior end ; aperture expanded, 

 oval ; surface with radiating ribs ; margin entire ; a linear perfora- 

 tion in the upper part of the shell, between the vertex and front 

 margin, in the line of an elevated rib. Interior with a linear groove, 

 vaulted over with a shelly plate corresponding to the perforation ; 

 muscular impression crescentic, interrupted in front. 



Cemoria, Leach, MSS. — Sipho, Brown. — Rimula, Loven ; Gould ; 

 Couthouy. — ? Diadora, Gray. 



1. Puncturella Noachina, Linnaeus. 



Patella noachina, Linn. Mantissa, p. 551 ; Cliemn. Conch. Cab. 

 vol. xi. p. 186. pi. 197. f. 1927, \92S.— Patella fssurella, Miiller.— 



