Veronicella sloanii (Cuvier, 1817)
External: Slug wider than high with a slight arch; oblong body with pointed ends; sharp, keeled perinotum; thin skin; female opening 1/3 from pedal groove and behind mid-point; yellowish sole without a median line; circular anus from the pedal groove to hyponotum and on the right, covered by a thin operculate blade and loose posterior foot end (Thomé 1979).
Internal: Small, flat, loose, yellow pedal gland (5.2 mm long, 1.4 mm wide in a 64 mm long slug); rectum intersects body wall near and above vagina; smooth, long, thin cylindrical penis with a slight extroversion at the apex; penial gland small with a tiny rhomboid papilla and 15 diverticula outside, 11 diverticula inside; small, rounded spermatheca with a very long, thick duct fused slightly to the end of the oviduct; canalis junctor short, straight attached to spermatheca duct near the spermatheca (Thomé 1979). .
Preserved: 64 mm long, 26 mm wide, 10.5 mm tall, right hyponotum 6.4 mm wide, sole 6.9 mm wide (Thomé 1979); to 89 mm long alive (Baker 1925).
Native to Cayman Islands, Jamaica. Invasive in Barbados, Bahamas, Bermuda, Colombia (Old Providence Island), Honduras, Nicaragua (Thome et al. 1997).