LITIIOUOMUS 



spec 



(M.H.Cn.ning.) 



LlTHonoMUs BAiiBATUS. Lifh. tcntd ohUqm oMongii, 

 medio ohlme. angidald, lenvi, corned, minute ijrmin- 

 lato-airiatd, epidermirle vermis extremitatcvi hnrbatd 

 indutd. 



The beakded Lithodomis. Sliell oliliquely oblong, 

 obtusely angled clown tlic middle, thin, horny, mi- 

 nutely grannlately striated, covered with an epider- 

 mis which towards the extremity is bearded. 



Ifah. Sydney (in mnd at the depth of six fathoms) ; 

 Cuming. 



The smallest species of the genus, of delicate liorny 

 substance, minutely grain-striated, covered towards the 

 extremity with a bearded epidermis. 



grained sculpture on the hollow anterior area, while the 

 posterior is finely striated. 



Species 28. (Fig. «, b, Mus. Cuming.) 



LiTiioDOMCS SEMiGRANATUs. Lith. testd obUque orctt- 

 n/d, sttbirregulari, medio obtuse angulatd, pelhicido- 

 corned, pontice leevigatd, aniice graniilafo-striafd, epi- 

 derraide pilosd versiM extremitatem indiitd. 



The HALF-GRAINED LiTHODOMUS. Shell obliquely arched, 

 rather irregular, obtusely angled down the middle, 

 transparent-horny, smooth posteriorly, gi'anularly stri- 

 ated anteriorly, covered towards the extremity with a 

 hairy epidermis. 



//ab. ? 



This differs from the preceding species in being of a 



more irregular arched growth, grain-striated only on the 



posterior area. 



Species 39. (Fig. 29 and 32, Mus. Ci 



LiTHODOMUS GossEi. Lit//, tf'sld elouffnto-cuneiformi, 

 umbojtibus abrupte angulato-compressis, area antica 

 concavd ; lutescente, postice crebristriatd, antice valide 

 grmiato-decassatd. 



Gosse's LiTHODOMUS. Shell elongately wedge-shaped, 

 umboes abruptly angularly compressed, anterior area 

 concave ; yellowish, closely striated posteriorly, 

 strongly grauularly decussated anteriorly. 



Hah. Jamaica ; G'osse. 



A very characteristic species, fretted with decnssately- 



Species 30. (Mus. Cuming.) 



LiTHODOMUS LANIGER. Lith. testd elongatd, .loliduld, 

 aulice acuminato-contortd, medio gihbom, obtuse angu- 

 latd, conspicue ■ttriatd, epidermide tonui, corned, aniire 

 dense pilosd. 



The woolly Lithodomus. Shell elongated, rather so- 

 lid, anteriorly acuminately twisted, gibbous in the 

 middle, obtusely angled, conspicuously striated, with 

 a thin horny epidermis, anteriorly densely hairy. 



DuNKER, MS. in Mus. Cuming. 



Hob. Australia. 



A narrow angularly distorted shell, curiously attenuated 



towards the anterior extremity, which is densely hairy. 



Species 31. (Mus. Cuming.) 

 LiTHODOMUS SPLENDIDDS. Lith. testd oblongd, navi- 

 formi, utrinque injlatd, radiatim striatd, margine dor- 

 sali arcuato mibangulato, ventrali postice sinuato ; at- 

 bidd, epidermide nitente castaned indutd, antice sub- 

 pilosd. 

 The SPLENDID LiTHODOMUS. Shell oblong, boat-shaped, 

 inflated on each side, rad lately striated, dorsal margin 

 arched, slightly angled, ventral posteriorly sinuated ; 

 whitish, covered with a shining-chestnut epidermis, 

 rather hairy anteriorly. 

 Folsella splend'ida, Dunker, Pro. Zool. Soc. 1856, p. 365. 

 Hab. Sydney. 



Very broadly inflated, and covered with a beautiful shin- 

 ing-horny epidermis. 



Species 33. (Mus. Cuming.) 



LiTHODOMUS ARGENTEUS. Lith. testd trigono-cuneiformi, 

 lateribns contractd, pellucido-corned, albicante, postice 

 elongato-striatd, antice radiatim striatd. 



The silvery Lithodomus. Shell triangularly wedge- 

 shaped, contracted at the sides, transparent-horny ; 

 whitish, posteriorly elongately striated, anteriorly ra- 

 diatelv striated. 



January, 1858. 



