52 GARRETT: ON POLYNESIAN MITRID^. 



very accurate figure. 



123. Turricula multicostata Swainson, Reeve, 1. c, pi. 

 xxxviii., fig. 322. 



A rare and beautiful species, inhabiting all the groups 

 South of the Equator, except the Marquesas and Tonga 

 Islands. On the outer reefs, and found only in the condi- 

 tion of dead shells. 



The narrow white zone iTientioned by Reeve is some- 

 times nearly obsolete or reduced to a thread-like line. The 

 base is distinctly granulated, and the whole surface exhibits 

 distant incised lines between the ribs. 



124. Turricula Michauii (Mitra) Crosse et Fischer. Jour. 

 Conch., 1864, p. 337. — Mitra rigida, Reeve, not of Swain- 

 son, Conch. Icon., pi. xxii.,fig. 169. — Turricula ( Costellaria) 

 Dunkeri, Schmeltz, Cat. Mus. Godeff., iv., p. 84 ; T. (C.) 

 Deshayesii, Schmeltz, (Reeve?) 1. c, v, page 119. 



We obtained hundreds of living examples of this elegant 

 species by digging in sand near low water mark in sheltered 

 places at the Tonga and Viti Islands. 



Our specimens, which are the same size as Reeve's figure 

 have three rows of brownish-orange spots on the body whorl, 

 the upper one continued up the spire. The ground color is 

 white or bluish-white, and the aperture is marked with two 

 transverse brownish patches in the throat. All have the in- 

 terspaces between the ribs more or less distinctly striated 

 with transverse incised lines. 



Not having access to Swainson's Zoological Illustrations, 

 I am unable to form an opinion with respect to Reeve's de- 

 termination of this species, of which he gives a good figure, 

 which only differs from our examples in having one more 

 row of spots on the whorls of the spire. He gives no locality. 



Messrs. Crosse and Fischer who had an oportunity of 

 examining Cochin China specimens, state that Reeve's rigida 



