240 THE PROCEEDINGS OP THE LINNEAN SOCIETY 

 69. SlGARETUS EXIM1US. 



Sigaretus eximius, Sowerby, Reeve, Conch. Icon., pi. 5, sp. 

 22, a, b. 



Hab. Darnley Island, Torres Straits, 20 fathoms, fine white 

 sand ; Evans Bay, Cape York, 7 fathoms, sandy mud. 



Family LamellariidjE. 



70. — Lamellaria, sp. 1 

 Hab. Darnley Island, Torres Straits, 30 fathoms, sand bottom. 

 The upper half of a specimen of this genus was obtained dead 

 and sea-worn. 



On a new genus of Arachnidse, by H. H. B. Bradley, Esq. 

 Rhyncharachne. Nov. Genus. — Plate II. 



Cephalothorax to a considerable extent hidden by the projection 

 of the abdomen ; cephalic part, marked by a deep furrow, pointed, 

 not elevated, and terminating in a tubercle which carries six eyes ; 

 this tubercle projects, and is lower than the hinder part of the 

 cephalothorax. 



Eyes eight, up equal, round ; six placed in two rows on the 

 tubercle, two in the upper and four in the lower row ; four inter- 

 mediate ej^es, directed forwards, forming a trapezium, narrowest at 

 the upper part ; eyes of the upper row larger than the other eyes 

 o these rows ; laterals of the lower row smallest of a 1, as far from 

 the intermediates of that row as are the eyes of the upper row, and 

 placed on the side of the tubercle directed laterally ; the other two 

 eyes, placed in the angles of the cephalothorax, are largest of all, 

 and are also directed laterally. 



Maxillae hatchet-shaped, short, inclined on the labium, straight 

 on the outer edge, and rounded at the extremities. 



Labium a little broader than long, convex, and rounded at the 

 anterior margin. 



Legs of two first pairs long and directed forwards ; of two hinder 

 pairs short and directed backwards — 1, 2, 4, 3. 



Palpi moderately long. 



