160 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL. 37. 
rounded at the end; in front subtruncate; ventral edge rounded — 
behind, in front somewhat flexuous; umbones blackish; the internal 
margins not crenate. 
There is no record as to the edibility of this species. 
TELLINA (ANGULUS) EBURNEA Hanley. 
Plate 28, fig. 3. 
Tellina eburnea HANLEY, Proc. Zool. Soc. of London for 1844, p. 61; Mon. Tellina 
in Thes. Conch., 1846, p. 241, pl. 58, fig. 91. 
From the flats at Capon. 
Distribution.—Gulf of California and southward to Paita, Peru. 
Shell small, oblong, compressed, opaque white, glossy, inequilateral, 
with strong concentric sulci which usually are more feeble in one of 
the valves; and which become closer and the interspaces sublamellose 
on passing the flattened area at the upper edge of the more convex 
valve; posterior end shorter, subcuneiform, anterior edge straight, 
then rounded down to the base; ligament short and prominent; fold 
almost obsolete; inside pure white. 
An inconspicuous species, not known to have any economic value. 
TAGELUS (MESOPLEURA) DOMBEYI Lamarck. 
Plate 27, fig. 3. 
Solen dombeti LAMARcK, Anim. s. Vert., vol. 5, 1818, p. 454; Encycl. Méth., 
pl. 224, fig. 1. 
Navaja. Taken in sand, under 3 or 4 feet of water, at Chilca Bay, Peru. Used as 
food, but apparently does not occur abundantly. 
IMstribution—F rom the island of Chiloé northward to Tumbes, 
Peru. 
Shell elongate, parallel-sided, the ends rounded; covered with a 
dull olivaceous periostracum, white or purplish with an obsolete 
white ray; beaks subcentral, the ends of the shell gaping slightly; the 
base with its margin in the middle somewhat concave. Hinge with 
two inconspicuous cardinal teeth. 
SEMELE SOLIDA Gray. 
Plate 28, fig. 10. 
Amphidesma solidum Gray, Spicilegia Zoologica, 1828, pl. 6, fig. 6—Hup®, in 
Gay, Hist. de Chile, vol. 8, 1854, p. 359, pl. 7, fig. 1. 
Concha blanca. Bay of Chilea, 30 miles south of Callao. 
Distribution.—Chonos Archipelago and northward to Callao, Peru. 
Shell thick, solid, suborbicular, compressed, with concentric 
grooves and delicate radiating strive; somewhat wrinkled distally; a 
touch of purple on the hinge margin; ligament internal; lunule 
minute, lanceolate; cardinal teeth very slender. Not of economic 
