— 161 — 
Pleurotomella (2) bullioides Sykes, in: Pr. mal. Soc. London 1906 vol. VII. p. 178 t. 16 
fig. 1, la. 
„Shell ovate-fusiform, spire rather depressed. Colour white, with a chestnut-brown pro- 
toconch. Whorls 6 somewhat convex; suture well marked. Protoconch composed of four whorls, 
the first minutely punctate, the second and third beipg decussated by arcuate riblets, while the 
fourth whorl has this deeussation on its lower half, but one series of riblets has become obsolete on 
the upper half. The residue of the shell is, in some specimens, marked by three or four ineised 
lines, the only other sculpture being the lines of growth, which are sinuous and more noticeable 
just below the suture. The last whorl is large and inflated; the mouth ovate, columella slightly 
eurved; lip thin and arcuate, with a deep sinus at its upper margin. 
Aufenthalt im lusitanischen Meer, von der Porcupine bei Station 17 gedrakt. Abbildung 
und Beschreibung nach Sykes. 
„Belonging to the group of 7. Dalmasi, Dautz. & Fisch, but a smaller and more ovate 
shell, the spire being not so elevated. It is the obesa Jeffr. mss,, which name has been used three 
times in the Pleurotomidae.* 
Pleurotomella gregaria Sykes. 
Taf. 122, Fig. 16. 
Testa tenuiuscula, alba, spiva elevata, fusco maculata. Anfractus 6, apicales 4 reticulati, 
inferi costellis longitudinalibus infra peripheriam anfraetus ultimi evanescentibus, lirisque rotundatis 
spiralibus sculpti, ultimus infra suturam excavatus, in excavatione striis spiralibus et arcuatim radiantibus 
numerosis decussati. Apertura ovata; columella strietiuscula. 
Alt. 4,5, diam. 2 mm. 
Pleurotomella gregaria, Sykes, in: Pr. mal. Soc. London 1906 vol. VII. p. 180 t. 16 fig. 2. 
„Shell somewbat thin, with a well elevated spire, white, the protoconch stained with brown. 
Whorls 6, four being apical. The apieal whorls (worn) are retieulate, and the residue of the shell 
is seulptured with longitudinal costae, which fade out on the lower half of the whorls; there are 
also numerous rounded spirals cutting the costae. Below the suture there is an excavated area, 
showing spirals and also arcuate striae, more numerous than the costae. Columella fairly straight; 
mouth ovate. 
Aufenthalt im lusitanischen Meer, von der Porceupine bei Station 17 gedrakt. Abbildung 
und Beschreibung nach Sykes. 
„A puzzling form of the group of P. subaraneosa Dautz. & Fischer. From this species 
it differs in sculpture, the spirals being much more numerous and rounded; from P. Watsoni, 
Dautz. & Fischer, it differs in the excavated area below the suture; it may be the form referred 
by these authors to Jeffreysi, Verrill, form which it appears to me to differ in the shape of the 
whorls, length of canal and, from Verill’s figure, in the longitudinal sculpture. It is the spinulosa 
Jeffreys mss.“ 
Kobelt, Iconographie IV. 21 
