318 PROCEEDINGS OF THE ACADEMY OF NoV., 



Length 6.5, diameter 2.7, aperture 3 mm.; 53^ post-embryonic 

 whorls. 



Off Waikiki, Oahu, in 25-50 fms. D. B. Langford. 



One specimen is a httle stouter and lacks the lower brown band. 



Vexillum turben kanaka n. sxibsp. PI. XII, tie;. 26. 



The shell is similar to M. turben Reeve (Philippine Islands) in 

 sculpture and the ochraceous-buff or buff-yellow color, but the spire 

 is more shortly and a little concavely conic above, the penult whorl 

 slightly swollen. There are six plaits, the upper one strong and 

 horizontal. Within the outer lip there is a small fold, more promi- 

 nent than the others about the upper third. 



Length 22.7, diameter 12 mm. 



Length, 21, diameter 10 mm. 



Honolulu, on the dredge dump, J. M. Ostergaard. 



Three specimens of this exquisite shell have been taken. On 

 comparison with a specimen of Reeve's species they show certain 

 differences of shape which seem to be of racial significance. 



The related M. haldwini Melvill is very different in color and 

 sculpture. It should be compared with T. flamimiJata Pease, which 

 may be the same. 



XII. Various other Gastropods 



Murex pele Pilsby. PL XII, figs. 29, 30. 



Murex -pele Pils., Nautilus XXXI, pi. 3, figs. 9, 12. 



Off Waikiki, Oahu, in 35-50 fathoms. D. B. Kuhns, 191G. Type 

 no. 47191 A. N, S. P. Also in the Thaanum collection. 



Closely related to M. rota, which it resembles in general form. 

 Pure white. The nuclear whorls are lost. The first 23^ remaining 

 whorls form a slender, slowly tapering style, the whorls being nearly 

 flat, the suture oblique, well impressed, bridged by a few laminae. 

 After that the shell enlarges abruptly; the next 13^ whorls being 

 carinate, flattened above the keel, very deeply excavated below it, 

 crossed by six lamellar flounced varices on a whorl. The last whorl 

 is rounded with several quite low spiral welts. The six varices, 

 which increase progressively and rapidly in prominence, are connected 

 by broad lamellae with the preceding whorl, dividing the sutural 

 region into a series of deep cavities. The varices bear long spines, 

 blunt or expanded at the ends, crenulated on the back and sides, 

 slit in front. There are two of these processes on each varix much 

 larger than the others, more expanded at the ends. A series of little 



