112 Dr. W. T. Cal man on 



near the upper margin, its valves separated by wide inter- 

 spaces, and its carina with a rounded roof it is brought into 

 proximity with such forms as S. giganteum, Gruvel. From 

 that species it is separated by the narrower and more oblong 

 form of the capitulumwithstraighter carina, by the differently 

 shaped carinal latus with the upper angle not above the 

 level of the umbo, and by the long and many-jointed caudal 

 appendages. 



The specimen described as the holotype formed part of a 

 small collection which was kindly determined for the 

 British Museum some years ago by Dr. Annandale. By 

 some mischance, which cannot now be explained, the speci- 

 men was returned bearing the label " S.velutinum/' although 

 its distinctness from that species seems obvious to a much 

 less practised eye than Dr. Annandale's. Unfortunately the 

 record has been published by Dr. Annandale (Rec. Ind. 

 Mils. ix. 1913, p. 230). The paratype, although from a 

 widely distant locality, agrees very closely with the holotype 

 in external characters. It differs, however, in having the 

 caudal appendages longer and composed of a larger number 

 of segments. 



It is possible that the specimen figured by Hoek in his 

 1 Siboga' Report (p. 85, pi. vii. fig. 13) as S. moluccanum 

 belongs to the species here described. The figure, however, 

 shows the capitulum to be a good deal wider, and some 

 details of the valves can hardly be reconciled with the 

 specimens examined by me. The true S. moluccanum, as 

 represented by the holotype in the 'Challenger' collection, 

 is widely different from the present species ; it has the roof 

 of the carina angled in the middle and separated by well- 

 marked angles from the parietes, the valves all in contart 

 or nearly so, the rostral latera much deeper, and the caudal 

 appendages of seven segments. 



Scalpellum (Scalpellum) regina, Pilsbry. 



Scalpettum regina, Pilsbry, Bull. U.S. Nat. Mus. Lx. 1907, p. 31, pi. ii. 

 %s 4-6. 



Locality.— Lat. 7° 37' S., long. 3-1° 26|' W. (off Pernam- 

 buco), 50-150 fath. C./S. ' Norseman.' 2 $ . 



Remarks. — In general these specimens agree so closely 

 with Pilsbry's description and figures that there can be little 

 doubt that they belong to the species described by him. 

 The most conspicuous difference is the greater width of the 

 scutum, which is not twice as long as wide (16x29 mm.). 



