66 



A REVIEW OP THE VOLUTIDAE 



rather Ill-defined; nucleus few-whorled, 

 shining, colored two shades of buff; ground 

 color light ivory, overlaid with numerous 

 chocolate-brown blotches; interior peach 

 color, fading into a flesh-colored zone ad- 

 jacent to the outer lip; columella with 

 four plaits. 



Aurinia neptunia Clench and.Aguayo 19^+0 

 (Plate 6, Figure 54) 



Aurinia neptunia Clench and Aguayo, Mem- 

 orias de la Sociedad Cubaina de Hiatoria 

 Natural, vol. Ik, number 1, p. 90, pi. 

 16, fig. 5, 19^0. 



Alt. 50.5, diam. I8.I mm. 



Hab. Off Banner Reef, Pedro Bank, 70 miles 

 south of Jamaica, I88O, in 322 fathoms. 



Holotype in the Museum of Comparative Zool- 

 ogy, number II9025. 



The large nuclear whorls and broad 

 spiral color-bands distinguish this form 

 from other Aurinias . Ground color, yel- 

 lowish straw to ivory, overlaid with broad, 

 chocolate-brown bands. 



Aurinia robusta Dall I889 

 (Plate 25, Figure I68) 



Aurinia robusta Dall, Bull. Mus. Comp. ZooL, 

 18, p. 153, pi. 35, fig. 2, 1889; Trans. 

 Wagner Inst., 3, p. 8I, pi. 7, fig. 5, 

 1890. 



Alt. 119, of last whorl 100, diam. 52 mm. 



Hab. Straits of Florida, Gulf of Mexico, 

 119 to 200 fathoms. Also off Cozumel 

 Island in 23I fathoms. Off Punta Al- 

 legre, Caibarien, off San Taren Channel; 

 off Saguala Grande, Cuba, 210 to 530 

 fathoms . 



This is a rather stout species with 

 strong nodules on the periphery of the 

 early whorls. Nucleus consisting of one 

 and one-half concave whorls; shell distin- 

 guished by its chalky outer layer under a 

 pale epidermis which is eroded like a fresh- 

 water shell; color pattern resembling A. 



junonia and young Conns florldariua , 



Aurinia schmltti Bartsch 

 (Plate 7, Figure 58) 



1931 



Aurinia schmitti Bartsch, Journ. Washington 

 Acad. Sci., vol. 21, no. 21, p. 539, 

 fig. 1, 1931. Memorias de la Sociedad 

 Cubana de Historia Natural, vol. Ik, 

 no. 1, 1940. 



Alt. 115, diam. 35 mm. 



Hab-. South of Tortugas, Florida, in 80 

 fathoms (type locality). 



The original description is as 

 follows : 



Shell large, spindle-shaped, exte- 

 rior covered by an olivaceous periostracum 

 which dehisced upon drying. When the peri- 

 ostracum is removed the general color of 

 the shell is pinkish chalky with the excep- 

 tion of the nucleus, which is pale buff. 

 There are also rows of chestnut -brown spots, 

 which are arranged in spiral series. Two 

 of these occur between the summit and the 

 suture of the turns. The last whorl shows ■ 

 five of these interrupted bands; the first 

 much less developed than the rest, being 

 at some little distance anterior to the 

 summit of the whorl; the next and fifth 

 band is of about the same width, while the 

 third and fourth are fully twice as wide as 

 the second and fifth. The base of the col- 

 umella is also brown. The front of the 

 shell from the inner columellar edge to the 

 left side of the shell and the same area of 

 the proceeding whorl, are covered with a 

 soiled, smoky gray, somewhat nacreous cal- 

 lus. Inside of outer lip salmon colored, 

 showing the two heavy interrupted bands, 

 and the rest by transmitted light. The nu- 

 cleus consists of about one turn, which 

 forms a smooth mamillated apex. Post- 

 nuclear whorls appressed at the summit, 

 marked by obsolete, rather broad, irregu- 

 lar, axial ribs, which are absent on the 

 first and last turns. They show best on 

 the second and third. The entire post- 

 nuclear part of the shell Is marked by 

 rather strong incremental lines, particu- 

 larly so behind the edge of the outer lip. 

 The spiral sculpture consists of numerous 

 fine raised threads, which are of almost 



