Emilio Rolân, R. Fernândez-Garcés, C. Redfern 
New records and new species of Agathotoma 
Agathotoma asthenika spec. nov. 
Figs 6A-E, 10G, 10K-L, 1 IG, Table 1 
Type material. Holotype (Fig. 6A) in the MNCN 
(15.05/60008). Paratypes in the following: MNHN 
(24830, 1 s); frora the type locality; MHNS (100567, 
1 s), IES (1 s); CFG (1 s) and CCR (1 s), both from 
Faro de los Colorados, Cienfuegos, 40-65 m; USNM 
(1 s), La Habana, 12 m. 
Other material examined. Cuba: I s, Rancho Luna, 
22 m, broken during the study; 3 s, Los Laberintos, 
Faro Luna, Cienfuegos 22 m (CFG); 5 s, Los 
Laberintos, Faro Luna, Cienfuegos, 22°02 , 039”N, 
80°25 , 792”W, 10 m (CFG); 4 s, Ij, Bajo de Sancho 
Pardo, 15 m (MHNS). 
Type locality. Los Laberintos, Faro Luna, 
Cienfuegos, 30 m, Cuba. 
Description. Shell ovoid-elongate, rather solid, 
pointed, white with some tan areas between the ribs 
and also in the suturai area. Protoconch of a little more 
than 2 whorls, the first one and a quarter whorls 
smooth and the last half axially ribbed. Diameter of 
about 410 jim. Teleoconch of about 4 whorls, with a 
slightly prominent shoulder a short distance below the 
suture. Each whorl has 8-9 prominent orthocline or 
slightly opisthocline ribs, a little prominent on the 
shoulder and narrower than their interspaces. Spiral 
sculpture of very numerous and irregular cordlets 
(about 10 on the first whorl, about 11-12 on the 
second and 40 to 55 on the body whorl). High 
magnification reveals very fine Unes in the interspaces 
which form axially elongate nodules when Crossing 
the cordlets. In the interspaces there are also numerous 
irregular micro-tubercles. Aperture oval elongate 
extended by a wide and short siphonal canal and with 
a deep sinus on its upper part. Peristome wide, with 
the same microsculpture as the shell. 
Dimensions: The holotype is 3.9 mm in length . Other 
material studied is between 3-4 mm in length. 
Distribution. Only known from Cuba. 
Remarks. A. candidissima is larger, a little wider, 
more solid, the shoulder is less pronounced and 
rounded, the colour is white sometimes with faded 
spiral bands and lacks subsutural colour. A. 
candidissima is a slightly variable species, but it is not 
possible that these shells could represent a population 
of narrow shells because typical shells of both species 
hâve been collected in the same area without 
intergradations. 
Agathotoma ecthymata is wider and more robust, and 
has a paucispiral protoconch. 
Agathotoma apoctypha is wider, mainly on the base, 
the spiral sculpture has larger cordlets and the 
piotoconch is short and strongly sculptured by zigzag 
cords. J o o 
Agathotoma castellata is wider, with axial ribs which 
are more elevated in the subsutural area. 
Etymology. The spécifie name is derived from the 
Greek word “asthenikôs ” which means “thin, sickly” 
alluding to its narrow profile. 
Agathotoma eduardoi spec. nov. 
Figs 7A-G, 10H, 10M-N, 11H, Table 1 
Type material. Holotype (Fig. 7A) in the MNCN 
(15.05/60009). Paratypes in the following: MNHN 
(24831, 1 s, Fig. 7B, 11D); MHNS (100568, 5 s, Fig. 
7C, 11C), IES (1 s); CFG (1 s) ail paratypes from 
Rancho Luna, Cuba. 
Other material examined. Cuba: 2 s, Itabo, Gavilân, 
Cienfuegos, 22°00'890”N, 80°24'832”W, 10 m 
(MHNS); 1 s, Rancho Luna, Cienfuegos 20 m (CFG). 
Type locality. Cayo Witties, 12 m, Nicaragua. 
Description. Shell ovoid-elongate, rather solid, 
pointed, whitish in colour. Protoconch with a little 
more than one whorl, appearing smooth, but 
magnification reveals numerous spirally aligned 
tubercles; diameter of about 380-400 pm. Teleoconch 
of about 4 whorls in most mature specimens, with a 
slightly prominent shoulder a short distance below the 
suture. Each whorl has prominent orthocline or 
slightly opisthocline ribs, nine on the first whorl and 
about ten on the subséquent whorls, the ribs being 
narrower than their interspaces. Spiral sculpture of 
very numerous and irregular cordlets (about 10 on the 
first whorl, about 14 on the second and between 45-50 
on the body whorl). High magnification reveals very 
fine Unes in the interspaces which form axially 
elongate nodules when Crossing the cordlets, with an 
irregular microsculpture. In the interspaces there are 
also numerous irregular micro-tubercles. Aperture 
oval elongate extended by a wide and short siphonal 
canal and with a deep sinus on its upper part. 
Peristome wide, with the same microsculpture as the 
shell. 
Dimensions: The holotype is 4.2 mm in length. Other 
material studied is between 2-4 mm in length. 
Distribution. Known from Cuba and Nicaragua. 
Remarks. The différences with the species previously 
mentioned are very similar to those discussed for A. 
asthenika spec. nov., as both shells are very similar 
except for the different shorter protoconch. 
Agathotoma candidissima is larger, a little wider, 
more solid, the shoulder is less pronounced and 
rounded, the colour is white sometimes with faded 
spiral bands, lacks subsutural color, and has a 
protoconch with more whorls. 
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