TEREBRATULA.—P are IV. 
Terebratula costata, Lowe. 
Terebratula aurita, Fleming. 
Terebratula striata, Leach. 
Terebratula septentrionalis, Courthouy. 
Terebratulina caput-serpentis, D’Orbigny. 
Terebratulina cornea, D’Orbigny. 
Delthyris spatula, Menke. 
Hab. Norway, North America, North Britain, Mediter- | 
ranean (at a depth of from ten to fifty fathoms). 
This species ranges throughout the European Seas from 
the Arctic to the Mediterranean, mostly at considerable 
depths, and it appears abundantly in a more finely striated 
state in the northern seas of the United States. The 
North American form is given as a distinct species in the 
Museum Catalogue with Courthouy’s name, 7. septentrio- 
nolis, but it is untenable, as Dr. Gould himself admits in 
his Report of the Invertebrata of Massachusetts. The shell 
has sometimes a slight downy epidermis upon it. ‘The 
Pecten valve in our Plate, with several small specimens 
attaching to it, has been brought up in the dredge from 
the sea-bottom, and serves to illustrate the habit of the 
The dorsal valve, erroneously numbered 15 c, 
belongs to Z. Japonica, Fig. 16, but the loop is the same. 
species. 
Species 16. (Fig. 16 and 15 c, Mus. Cuming.) 
TEREBRATULA (TEREBRATULINA) Japonica. Ter. testa 
oblongo-ovati, subangustd, gibbosa, pellucido-alba, cor- 
ned, dense yadiatim lineari-sulcatd, sulcis hie whe bi- 
furcatis, rostro tumido-producto, deinde oblique trun- 
cato, foramine subamplo, imperfecto, deltidio obsolcto, 
valvis globoso-convexis, ventrali versus rostrum ad la- 
tera compressa ; apophyse parva, anelliformi. 
THE Japan TEREBRATULINA, Shell oblong ovate, rather 
narrow, gibbous, transparent white, horny, densely 
radiately linearly grooved, grooves here and there 
bifurcated, beak tumidly produced, then obliquely 
truncated, foramen rather large, incomplete, deltidium 
obsolete, valves globosely convex, ventral valve com- 
pressed at the sides towards the beak; loop small, 
anelliform. 
Terebratula Japonica, Sowerby, Thes. Conch. vol.i. p. 344. 
pl. 68. f. 7, 8. 
Terebratula angusta, Adams and Reeve. 
| Hub. Corea, Japan. 
T. Japonica is very closely allied to 7. caput-serpentis, 
and is without doubt its representative in the Corean and 
Japanese waters. 
