PLECOCHEILUS undulatus. 



Waved Pupa-snail. 



Family Pupadre. Guilding. Genus Carychium. Muller. 

 Sub-Gen. Plecocheilus. Guild. 



Sub-Generic Character. 



Animal hermaphrotide, snail-like ; the head bilobed, and bearing 

 four tentaculae, two of which are long and terminated by the 

 eyes ; mandibles greatly lunated, with a small transverse mouth 

 and a triangular cutaneous plate ; mantle perforated. Eggs 

 large, externally calcarious. Shell oval, ventricose, the two 

 last spiral whorls very short, but elevated ; aperture entire, 

 elongated ; outer lip thickened and reflected ; inner lip thin, 

 nearly obsolete; pillar with a strong compressed inflexed 

 plate. Guilding. 



Specific Character. 



Shell irregularly and minutely corrugated, and longitudinal I ij 

 striated; marked beneath the olive epidermis with oblique 

 undulated, dark stripes. 



Carychium undulatum (1814). Leach. Zool. Mis. 1. pi. 35. 

 Auricula caprella (1822). Lam. Sys. b\ 2. p. 140. Chemnitz 



pi. 176, /. 1701.-2. 

 Plecocheilus undulatus. Guilding in Zool. Jaurn. 3. p. 532. 



The pleasure which our scientific brethren will receive from 

 possessing this copy of Mr. Guilding's beautiful drawing, 

 will be changed into regret on knowing that the gifted 

 hand which originally traced it is now cold. A liver com- 

 plaint, doubtless brought on by too much exposure to a 

 tropical sun, terminated the mortal career, a few months ago, 

 of this accomplished Zoologist and excellent man. The 

 name of Guilding now belongs to posterity. His loss, 

 and that too in the prime of life, leaves a blank in the ranks 

 of science, which there is no one so qualified to fill; where 

 can we look for profound and indefatigable research, matu- 

 red knowledge, a ready pen and an exquisite pencil, all 

 employed unceasingly to illustrate from life the animals of 

 tropical regions. The search, unfortunately, will be fruitless. 

 May his spirit now be with that God whose minister he was, 

 and whose works upon earth it was his purest delight to 

 study. 



This noble species was discovered by Mr. Guilding, in 

 great numbers, upon the trunks and branches of trees in the 

 forests of St Vincent : its eggs are hard like those of a bird, 

 and the young shell resembles that of a Succinea. In 

 Carychium the eyes arc at the base, but here they are at 

 the tips of the tentaculae. 



103. 



