7 6 



The Siboo^a specimens are slightly less depressed, the whorls are more convex, especially below 

 the suture, the last whorl is less angular, the umbilicus narrower. The chief character, which 

 distino-uishes the variety is that the base of the shell is much smoother, in one specimen from 

 each station, the spiral striae are completely wanting, in one from Stat. 37, which is however of 

 very doubtful identification, as it is very young, and in another from Stat. 66; spiral striae are 

 visible, but less strong than in the typical specimen, especially these last intermediate specimens 

 have induced me, to consider the shells as belonging to a variety. The sculpture consisting of 

 rather irregular spiral striae, crossed by fine but inconspicuous, oblique growth-striae, is quite 

 identical. The colour-pattern though variable, is similar, especially in the specimens from Banda. 



Fam. Haliotidae Fleming. 

 Haliotis Linné. 



1. Haliotis squamata Reeve. 



REEVE. Conch. Ie. Vol. XII, Haliotis, fig. 35. 



WEINKAUFF. Mart.-Chemn. Conch. Cab. Ed. II, Haliotis, p. 59, PI. 23, figs. 1, 2. 



Pilsbrv. Man. of Conch. Vol. XII, p. 91, PI. 18, fig. 2. 



Stat. 34. Labuan Pandan, Lombok. Reef. 1 Spec. 



To this species I must refer the only specimen from Stat. 34, which has a rather juvenile 

 appearance. It is less elongated in proportion to its breadth, than in the cited figures, and two 

 specimens from Port Jackson, in my collection. Reeve gives no measurements, those known 

 by me, are : 



Weinkauff, 1. c. long. 43, lat. 26 Mill. 



Pilsbry, 1. c. long. 69, lat. 42 Mill. 



largest specimen from Port Jackson, long. 78, lat. 48 Mill. 



smaller specimen from Port Jackson, long. 60, lat. 38 Mill. 



specimen from Stat. 34, long. 38, lat. 28 Mill. 

 moreover only 5 perforations are open. According to Weinkauff, this should be from 6 — 8, 

 Pilsbry says 7 or 8. In the specimens from Port Jackson, one has 6 the other 7 open perforations 

 and of this last specimen the 8 th is again closed. As however the other characters, especially 

 those of sculpture agree and the number of open perforations and of relative length and breadth 

 vary, I don't venture to describe a new species on such slight differences. 



2. Haliotis varia Linné. 



Linné. Syst. Nat. Ed. X, p. 780, sp. 650. 

 RUMPH. Amb. Rariteitkamer, p. 121, PI. 41, fig. G. 

 Reeve. Conch. Ie. Vol. XII, Haliotis. fig. 4. 



Weinkauff. Mart.-Chemn. Conch. Cab. Ed. II, Haliotis, p. 10, PI. 3, fig. 4. 

 PILSBRY. Man. of Conch. Vol. XII, p. 95, PI. 17, figs. 91, 93, 99, 100; PI. 23, figs. 52—55. 



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