536 TE!STACEA ATLANTIC A. 



Like the last species, the European //. alliaria lias become 

 established at St. Helena, — where it ascends to the highest parts 

 of the great central ridge, occurring beneath stones and pieces 

 of moist rotten wood. It is indeed far more abundant in the ' 

 loftier portions of the island than it is lower down ; though I 

 have met with it occasionally in the grounds at Plantation, 

 which are only some 1800 feet above the sea. It was described 

 as a new species, under the name of H. remota, by Mr. Benson, 

 who stated that he found it, in 1832, between Plantation and 

 Stitch's ridge, as well as in the valley near Napoleon's tomb (in 

 the direction of Longwood). Mr. E. L. Layard, too, appears to 

 have taken it ' on the upper side of the road leading from 

 Jamestown to Longwood.' Jt is, however, universal above the 

 altitude of about 2000 feet, particularly in the dampest districts 

 and amongst the cabbage-trees. 



The H. alliaria approaches very closely to the (no less 

 highly polished and subpellucid) H. cellaria ; but it is uni- 

 formly smaller, and (as regards its spire) even still more flat- 

 tened ; its umbilicus is just appreciably narrower, or more 

 perpendicularly {i.e. less gradually) scooped-out ; its whorls are 

 only 5^ in number instead of 6 ; its colour is a little darker or 

 more fulvous, and the animal has the very peculiar property of 

 emitting a strong scent somewhat resembling that of garlic, — 

 a fact which must doubtless have suggested its specific name. 



(§ Conulus, Fitz.) 



Hyalina Mellissii, n. sp. 



H. minuta, orbiculato-depressa, discoidea, minutissime per- 

 forata, ecarinata, tenuis, diaphana, nitida, glabra, pallide fulvo- 

 cornea ; anfractibus 4^-5 convexiusculis, lente crescentibus, 

 prsesertim versus suturam (impressam) transversim striolatis ; 

 umbilico brevi, infra minutissimo ; apertura magna, transversa, 

 lunari ; peristomate simplici, acuto, versus columellam obsole- 

 ti^sime subrecurvo. — Diaon. maj. 1 ; alt. ^ lin. 



Habitat sub ligno truncisque arborum prolapsis in insulge 

 intermediis, praesertim graminosis ; ad Plantation, circa 1800' 

 s.m., a meipso sat copiose lecta. 



I obtained several examples of this very minute Hyalina in 

 the grounds of Plantation House, at an altitude of about 1800 

 feet above the sea. They were generally adhering to the under- 

 sides of logs of wood and fallen trunks of trees, particularly in 

 damp grassy spots after showers. Specimens of it have been 

 examined carefully by the Rev. R. B. Watson, who also forwarded 

 some to Dr. Grwyn Jeffreys; and it is the opinion of both of 

 those naturalists that the species is hitherto undescribed. 



