DALL: MOLLUSCA AND BRACHIOPODA. A407 
Lima fragilis (pars), Sowerby, Thes. Conch., 1847, 1, p. 86, No. 14; pl. 22, fig. 34 
(only). 
U.S. S. “Albatross,” at the Galapagos Islands. Panama, Cuming; Acapulco, 
Dall. U.S. N. Mus. 106,884. 
The nomenclature of the Limas is much mixed up, and the range of the species 
is very great. JZ. dehiscens Conrad, 1838, is a good species, quite distinct, as 
Limas go, from ZL. fragilis. 
L. angulata Sowerby was collected by me at Acapulco, Mexico, though 
described from Australia. I cannot distinguish the Galapagos shell from North 
European specimens. 
Acesta H. anp A. Apams. 
Lima (Acesta) patagonica Dat. 
Lima (Acesta) patagonica Dall, Nautilus, June, 1902, 16, p. 16. 
U. S. S. ‘“ Albatross,” station 2781, southern Chile, on the west coast of 
Patagonia, in 348 fathoms, mud, bottom temperature 50° F. U.S. N. Mus. 
95,462, 96,458, 96,931, 96,927, and 122,734. Also at station 2785, in 449 
fathoms, mud, temperature 47°. 
This has been called Z. excavata variety, and also referred to as a variety, of the 
Japanese LZ. goliath Sowerby. The young shells are beautiful little polished 
translucent objects, with well-developed teeth on the hinge line, the formula 
being F101 £101 
£010 Z 010 
shells. 
These teeth become obsolete or nearly so in the mature 
Lima (Acesta) agassizil Datt. 
Plate 16, figure 1. 
Lima (Acesta) agassizii Dall, Nautilus, June, 1902, 16, p. 16. 
U. S. S. “ Albatross,” station 3354, in the Gulf of Panama, in 322 fathoms, 
mud, bottom temperature 46° F. U.S. N. Mus. 106,890. 
Only one valve of this species was obtained. 
Lima (Acesta) diomedae Datt, n. sp. 
Plate %, figure 2. 
Shell short-ovate, of moderate size, white, with a pale yellowish periostracum, 
equivalve, inequilateral, radiately sculptured, polished; hinge line very short, 
straight, with a very oblique ligamental pit in the narrow, triangular, flattened 
area; beaks very low, hardly rising above the area, situated opposite the posterior 
