3. Virgus misoolensis Schepman, 
Taf. 13, Fig. 3 
Unio misooiengis Schepman, Notes from the Leyden Mus., vol. 18, 1896, p. 259. ig, — 
Dronöt, Jeurn. de Conch., vol. 45, 1897, p. 125. 
Virgns misoolensis Simpson, Syn., 1900, p. 852. 
Shell elongated, rather compressed, very inaequilaterai, the umbones Iying at about !/, 
ofthe whole lensth of the shell, rather smooth, with numerous fine concentrie striae: um- 
bones little prominent, decorticated in the adult, in half grown shells conspieucus radiating 
folds, extending more ore less over the disk of the shell; moreover a few radiating grooves 
occeupy ihe anterior part of the shell, and miceroscopie radiating wrickles of the epidermis 
cover the posterior slope; epidermis reddish-brown in the adult, yellowish elive-green in the 
young ones. Upper margin slightly curved, anterior margin rounded, slightly protuded below; 
ventral margin ineurved, posterior margin ferming with the upper one a more or less obtuse 
angle, regulariy curved above, rounded below and running with a very obtuse angle at the 
umbonal ridge, which is rather obtuse, into the ventral margin. Ligament long, narrow, 
yellowish-brown. 
Nacre bluish white, more iridescent near tbke posterior part, brownish near the um- 
bones; scarcely more than one short, thick, crenated tooth in each valve; a small knob in 
the left valve may perhaps be considered as a second tooth; laterai lamellae: 2 in the left 
valve, one in the right one; they are elongated, slishtiy curved, rather tbick. 
Anterior scars: a large rounded one, which is rather deep, and a much smaller, very 
deep one, just beiow the tooth; posterior scars very shallow; pallial line distineti. Nacre 
much thickened near the anterior part of ventral margin, forming a callus, which is connect- 
ed with another callus, running from the umbones to this ventral one. 
Long. 65, alt. near the umbones 24, diam. 16 mill. 
Locality. Misool (Hoedt). — In the collection of the Doyle Mi Museum. 
Schepman. 
Schale lang gestreckt, niedrig, zungenförmig, zusammengedrückt, solid. Vordere Ober- 
rand gerade, nach vorn abfallend, niit dem senkrecht abfallend und dann kurz gerundet in 
den Unterrand übergehenden Vorderrand einen deutlichen Winkel bildend. Unterrand hori- 
zontal, fast gerade und nur wenig eingedrückt, Hinterrand von der gerundeten unteren Ecke 
aus senkrecht, von der ebenfalls gerundeten cberen Ecke aus sanfter, gerade ansteigend, mit 
dem geraden, leicht zu den Wirbeln abfallenden hinteren Oberrande einen deutlichen Winkel 
bildend. Winkel niedrig, flach, nicht vorragend, sehr weit vorn, bei !*/,, der gesamten 
Länge liegend, korrodiert, in der Jugend mit einer aus radialen Falten bestehenden Skulp- 
tur. Aeussere Arealkante niedrig, flach und undeutlich, obere deutlich. Area hoch, drei- 
eckig, zusammengedrückt, Areoia hoch, zusammengedrückt. Ligament kurz, fest, vorsprin- 
