444 SHELLS FROM THE 'CHALLENGER* EXPEDITION. [JunC 16, 



26. Lima murrayi, (Plate XXXV. fig. 26.) 



Testa tenuissima, ohlonga, obliqua, haud Jiians, liris tenuissimis 

 numerosis radiantihus, lineisque incrementi minutis (Jiic illic 

 pauds majorihus) insfructa ; latus posticuin obliquum fere recti- 

 lineare, anticum superne leviter incurvatum, deinde prominens, 

 excurvatum, inferne oblique recedens ; margo dorsi brevis, ven- 

 tris regulariter curvatus ; area dorsali parva, plana, fossa liga- 

 mentali magna profunda seulpta ; apices valvarum peculiares, 

 gibbosi, parvi ; pagina interna subnitida, radiatim subsulcata, 

 ad marginem crenulata, lira tenui ab apice usqiie ad partem 

 prominentem lateris antici extendente instructa. 

 Longit. 8 millim., alt. 12, diam. 6. 



This species is remarkable for its thinness of texture, the peculiar 

 bulging form of the anterior side, more marked than in L. loscombii, 

 and the fine radiating lirse. Between these there are still finer hair- 

 like threads, which being crossed by the lines of growth are more or 

 less minutely granular. The hinge-line is short, thin, and concave 

 in the centre at the ligamental depression. On each side at the top 

 of the lateral margins there are two or three short oblique lirae or 

 pseudo-teeth. The margin of the valves is distinctly dentate within, 

 as in most species of Pecten. I have named this after Dr. John 

 Murray, the learned and energetic editor of the ' Challenger ' Reports. 



27. Lima australis. (Plate XXXV. fig. 27.) 



Testa parva, altior quam longa, ovata, superne truncata, cequilate- 

 ralis, mediocriter convexa, alba, costis tenuibus radiantibus 

 {circiter 20), pulcherrime squamo-nodosis, instructa, lineis incre- 

 menti in interstiliis conspicuis subcancellata ; area ligamenti 

 angusta, plana, fossa triangulari in utraque valva inscidpta ; 

 linea cardinis subvalida, transversim confertim, sulcata et lirata ; 

 paghia interna alba, radiatim sulcata, ad marginem latum 

 clentata. 

 Longit, 4 inillim., alt. 5, diam. 3. 



This is a larger species than L. pectinata, H. Adams, from the Gulf 

 of Suez, and has more slender and differently sculptured ribs ; these 

 are considerably narrower than the interstices. Both these species 

 have the hinge-line much thicker than in the European L. sarsii, and 

 the transverse toothing more distinct. 



EXPLANATION OP THE PLATES. 

 Plate XXXIV. 



Fig. 1. Lamjmsia {Priene) murrayi, p. 436. 



2. Corallicrphila wahlbergi, p. 436. 



3. Turritella incolor, p. 437. 



4. 4 a. Capulus coinprcssus, p. 437. 



5. Trochus {Bembix) ahyssorum, p. 438. 



6. Cusjndaria (Myonera) lischkei, p. 438. 



7. Pleurotoma (Brillia) ehallengeri, p. 438. 



8. ( ) crossci, p. 439. 



9. ( ) haylci, p. 439. 



10. ( ) watsoni, p. 439. 



