MRI.VII.L AND STANDEN : CENUS SCALA IN THE PERSIAN GULF. 345 



sutures are closely impressed, the whorls being tumid. The nearest 

 ally to this species would appear to be S. pulcherrima Sowb. The 

 new form, however, being longer, with two more whorls, and possess- 

 ing more gracefulness of contour. With this we are very pleased to be 

 able to connect the name of our friend, Mr. Frank F. Laidlaw, whose 

 zoological researches in Malayana during the "Skeat" Expedition have 

 proved of much scientific importance. 



Scala laxata Sowb. 



P.G. Gais (or Kais Island), 14 fathoms, amongst broken coral, 

 much rarer than ^. glabraia, which occurred in the same sounding 

 with it. Also Sheikh Shuaib Island, 15 fathoms ; Gulf of Oman, 

 lat. 24° 58' N., long. 56° 54' E., 156 fathoms, 



Scala lineolata Sowb. 



M.C. Fairly general. 



I. Near Karachi, 5 fathoms, muddy sand. 



Scala maculosa Ad. & Reeve. 



P.G. Gais (or Kais) Island, 14 fathoms, amongst broken coral. 



Scala melior sp.n. (PI. VII., fig. 9). 

 S. testa gracili, oblongo-fusiformi, albida, imperforata, anfradibus octo, 



gtwrum tres apicales, paruni nitidi, fusco-albescentes, cceteris apud 



siituras impressis, ventricosis, tmdiqiie arete lainellaiis, supertiis iiumero 



lajiiellarum 2dti7num super antiMis, videlicet, pro rata parte viginti ad 



septendecim, lamellis regularibus, pulchre ad viargines reflexis, rotun- 



datis, interstitiis perlcevibus, apertiira rotunda, labro fere contimw, 



paullum ificrassato. 



Long., 6-50. Lat., 2 mm. 



ILab., India, Karachi. 



Most nearly allied to S. amathiisia M. & S., described at the present 

 opportunity, but not quite so delicate a shell, the great peculiarity, 

 which we have observed to the same extent in no other species of 

 the genus, being that the fourth and fifth whorls exceed the last in the 

 number of lamellae. Several examples, all alike in every particular. 



Scala pallasii Sowb. 



P.G. Gulf of Oman, lat. 24° 58' N., long. 56° 54' E., 156 fathoms. 



M.C. Charbar, 7 fathoms. 



I. Karachi ; all in somewhat juvenile condition, though unmistak- 

 able as to species. 



Scala pretiosa Lam. 



P.G. No special locality given, at 26 fathoms, mud, rarely. 



M.C. Fairly general, 3 to 7 fathoms, amongst loose rock and 

 muddy sand^ At Ormara, a fine dead specimen, measuring 43 x 25 mm. 



I. Bombay, rare (A. Abercrombie). 



Scala replicata Sowb. 



P.G. Lat. 26° 50' N., long. 52° 50' E., 29 fathoms, mud. Off Jask 

 Point, 8 fathoms, mud. 



