M D I L A. 



Species 32. (Mus. Cuming.) 



MoDlOLA GUBERNACULDM. Mod. tesfd subquadrato-ob- 

 longd, arciiatd, latere postico brevisshm, mbroatrato, 

 antico late flabelliformi, undique dense concenlrice 

 striata; lutescente, radiis linearibits licido-nendeis 

 pictd, versus marginem fitsco tinctd. 



The rdddkk Modiola. Shell somewhat squarely ob- 

 long, curved, posterior side very short, somewhat 

 beaked, anterior broadly fan-shaped, densely concen- 

 trically striated throughout ; yellowish, painted with 

 livid-blue linear rays, stained wiih brown towards 

 the margin. 



Folsella ffiibeniacii/ urn, Jhmker, Pro. Zool. Sue. 1850, p. 

 361. 



IJab. ? 



Partaking very much of the typical character of Mi/ti- 

 lus, and especially distinguished by its painting of livid- 

 blue linear rays upon a yellowish ground. 



Species 33. (Mus. Cuming.) 



Modiola stei&ata. Mod. testa subeloiigatd, temii, gib- 

 hosd, postice attenuaid, antic? subangnste producld, 

 IrBvigatd, viridi eximie tiuctd et varit'gatd. 



The streaked Modiola. Shell somewhat elongated, 

 thin, gibbous, posteriorly attenuated, anteriorly ra- 

 ther narrowly produced, smooth, prettily stained and 

 variegated with green. 

 Mytilas strigatus, Ilanley, Pro. Zool. See. 1844. 



Hal. Philippine Islands. 



A thin shell, of rather narrow gibbous growth, i)rettily 

 painted with rich green, which, on the anterior side, is 

 in oblique bands. 



Species 34. (Mus. Cuming.) 

 Modiola TiusTis. Mod. testd sicbelovgatd, tenui, postice 



trigojio-attenuatd, antice rectd, compressd, hevigatd ; 



fulvo-castaned, nitente. 

 The sad JIodiola. Shell somewhat elongated, thin, 



posteriorly triangularly attenuated, anteriorly straight, 



compressed, smooth ; fulvous-chestnut, shining. 



yohella tristis, Uunker, Pro. Zool. Soc. 1S56, p. 302. 

 Ifab. Chusan ; Capt. Benson. 



A light shell, of semitransparent substance, remarkablr 

 for its straightly-produced VolseUa-X\]ii& growth anteriorly. 



Species 35. (Mus. Cuming.) 



Modiola speciosa. Mod. testa longissimd, redd, laierf 

 postico brevi, rotundato, parum gibioso, antico clou- 

 gato, gradatim latiore, medio oblique obtuse angulato ; 

 pellucido-albd, epidermide corned decidud, postice ful- 

 vd, antice siiiaragdind indntd, intus margaritaced. 



The beautiful Modiola. Shell veiT long, straight, 

 posterior side short, rounded, but little gibbous, an- 

 terior elongated, gradually broader, obliquely obtuse- 

 ly angled in the middle, covered with a deciduous 

 horny epidermis, which is fulvous on the posterior 

 area and bright green anteriorly, interior pearly. 



I'olseUa speciosa, Dunker MS. in Mus. Cuming. 



IJab. Tumbez, Peru ; Cuming. 



A very rare and beautiful species, remarkable for its 



elongated form and richly-coloured horny epidermis. 



Fig. 30. (Mus. Cuming.) 



This shell proves to be the young of M. nitidn, repre- 

 sented at Plate II. The anterior slope of the shell i.- 

 ciiaracterized by a peculiar rippled structure. 



Species 37. (Mus. Cuming.) 



Modiola splendens. Mod. testd oblongo-ovatd, tenui- 

 culd, ntrinque rotundatd, latere postico gibboso, im- 

 dique lavigatd, nitente, vel miniUissime decussatim 

 striatd ; fulvd et intense hrunned, partim iridescente- 

 viridi. 



The splendid Modiola. Shell oblong-ovate, rather 

 thin, rounded at both ends, posterior side gibbous, 

 smooth throughout, shining, or very minutely decus- 

 sately striated; fulvous and dark-brown, partially 

 iridescent-green. 



Mylilus splendens, Dunker, Pro. Zool. Soc. 1S5G. p. 358. 



llab. Peru. 



October, 1857. 



