418 
CYCLOSTOMUS §. 7. CISTULA §. 1. 6. 
(sub angulo 60°); summo subinflato, flavulo, obtusulo; sutura 
profunda; anfr. 5, celeriter accrescentes, rotundati; nucleolaris 
inflatus; ultimus subventrosus, rotundatus; apertura subverti- 
calis (15° cum axi), angulato-circularis, 4 / 2 longitudinis vix 
aequans. Perist. rectum, continuum, bene adnatum, non libe- 
rum. Operculum terminale testaceum, arete 6-spiratum; nu- 
cleolo subcentrali, griseo-violaceo. — Long. 14, diam. 11, 
apert. 7 mill. — Rat. anfr. 2:5. — Rat. apert. 4 : 5.“ (M.) 
Cyclostomus caspicus Mouss. in Journ. Conch. XXIV. 1876. p. 46. t. 4. f. 2. 
Habitat Lenkoran ad mare Caspium (Sievers). 
XLV. (Mila Gray. 
(p. 186.) 
§• I- 
5. Mackinlayi Guncll. — Cyclostomus Makenlayi Schauf. in Cat.Pat. p. 95. 
§. 6 . 
30 a. C. Aguadillensis Pfr. 
T. perforata, oblongo-turrita, truncata, solidula, liris spi- 
ralibus superne vix prominentibus, in anfractibus ultimis di- 
stinctioribus, subapproximatis, lineisque filaribus confertissimis, 
illas transcurrentibus decussata, vix subnitidula, rubello-fulva ; 
spira regulariter attenuata, anguste truncata; sutura mediocris, 
nodulis fasciculato-striatis suberebre denticulata; anfr. superst. 
5 1 / 2 — 6, convexiusculi, ultimus basi rotundatus, circa perfora- 
tionem liris spiralibus fortioribus munitus, antice brevissime 
solutus, dorso carinatus; apertura verticalis, ovalis, superne 
subangulata, intus nitida; perist. duplex: internum continuum, 
vix prominulum, expansiusculum, externum ad anfr. contiguum 
excisum, superne angulato-lingulatum, caeterum peranguste 
patens. — Operc. normale. — Long. 18, diam. 6 mill. Apert, 
intus 4 mill, longa, 3 1 / 2 lata. 
Cistula Aguadillensis Pfr. in Malak. Bl. XXII. 1875. p. 207. 
Habitat prope Aguadilla insulae Portorico (Dr. J.Gundlach). 
Obs. Affinis C. rostratae Pfr., sed forma multo graciliore et peristo- 
mate externo minus evoluto, brevissime patente, statim distinguenda. 
