56 W.F. Ponder, D.J. Colgan, Т. Terzis, S.A. Clark, A.C. Miller 
Cal are given in Appendix 2. Note that the mean size is co 
population (Fig. 16C). 
Operculum (Fig. 7A,B). Ovate, thin, pale 
weak pegs on white smear on inner side. 
nsiderably smaller than those of the pool 
yellow, with eccentric nucleus, usually with 4—5 small, 
Statistics of 20 opercula from the type series. 
Female, N=13 
OL OW os PL PH 
Minimum Lg Ip (М0 wm e 
Maximum 1.79 1.36 0.86 0.48 0.15 
Mean ГӨ 108 (065 (044 009 
S.D. 007 007 013 009 003 
Male N=7 
OL OW os PL PH 
Minimum 1.56 1.17 0.42 0.23 0.06 
Maximum ПОТЕ gea men oe 
Mean gs "25 ven — 035 бук 
919) 01 008 010 009 003 
Radula (Fig. 10B-D,F). Central teeth broad, each with 3-4 (usually 4 i 
E қ 2 ге) small, n 
either side of a sharp median cusp about twice the length of the Bd DIR M SP DAMM 
basal denticles present, innermost larger. Lateral teeth with largest cusps in tooth Sé SR i net 
side of large triangular median cusp and 3-4 (usually 3) on outer side. Inner marginal t h Sm p, " 
narrow, sharp cusps on antero-distal and outer-distal edge. ӘЛЕН USt АДАН 
Outer marginal teeth wi h 
sharp cusps (approx. half length of thos i : | with small, narrow; 
ES SES : ose on inner marginal teeth) on antero-distal and inner-distal 
Head-foot. Cephalic tentacles pigmented dorsally, with narrow unpi : : 
and dorsal neck also pigmented. Ciliation (Figs 8C, 9A) as heen re stripe; snou 
especially opercular lobes, weakly pigmented; pallial roof and visceral coil variabl ІҢ ion. Foot, ал 
or mottled with grey ог black. Table but usually blac 
Anatomy. Osphradium unpigmented, located at posterior quart 
0.42 mm in length. Ctenidium with 30-37 broadly emer GE 
right; maximum width 0.46-0.76 mm, posterior 2 
idium, narrowly oval, 0.27- 
8 1/5 (rarely 1/4) length of renal gland 
h : еп th, 0.32- Т 1 3 Й . 
extending 1/4 to 1/3 of length into pallial roof. Чаткы? (Fig. d un їз MD. EE 
:76-0.92 mm 
length, stomach proper 0.77-0.89 mm in length, caecum absent i 
2 7 g , о 
Testis of 1.8-2.0 whorls; seminal vesicle visible externally afd JE E digestive gland and 
testis for only 0.2-0.3 whorls behind stomach, convolut 
GALA En kanali (eost E ma i € over stomach. Prostate gland (Fig. 12A) 
lial Д қ 
oval, narrowly oval іп section. РаШа! vas deferens coil dd 035-048 mm in height, broadly 
ed, i : 
— darker than surrounding epithelium of neck) low, oi E V ADIT ped CY 0 DES 
se o penis; wl 
few undulations nearer prostate, straight immediately anteri 
z 1 à rior to, and b с ы 
12C, 13A) unpigmented or with proximal part of distal section of ea ee Penis (Figs 
basal section unpigmented or with some grey pigment; distal section long and GENEE 
section relatively small, expanded. Penis base 0.37—0 : 4 
ofiiead! 49 mm from right eye, just to right of midline 
Ovary of 1.1—1.2 whorls. Coiled oviduct (Fig. 14A,C, co) with 
anteriorly; distal part straight, posteriorly Wrapped around s 
Duct to sperm sac ventral, very short (virtually direct com 
е ridge ac 
1 distal U-shaped loop, orientated 
perm вас (Fig. 14A, sps) іп S-shape сой. 
munication). Common duct (Fig. 14A,C: 
