Tritia incrassata odd numbers; Tritia varicosa even numbers.
1. Transverse oblong bosses.
2. raised round bosses.

3. Strong labial varix.
4. Strong labial varix and four additional varices.

5. Glossy, opaque, white parietal lip extends onto body-whorl.
6. Brown of body-whorl shows through translucent parietal lip.

7. White columella and siphonal canal. Dark spot within canal.
8. Brown columella and siphonal canal. No dark spot within canal.

T. incrassata H. 10.5 mm, Portland, Dorset, England, April 2012.
T. varicosa H.10.5 mm, Sussex, England, April 2011. Leg. K. Fraussen. coll. S. Taylor.
: flic.kr/p/2oiGpnC
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