. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. TACHEA. 377 Lingual membrane (PI. X. Fig. B) long and narrow, quite as in Arionta. Teeth 42—1—42. Another membrane had 190 rows of 43—1—43 teeth. The eleventh lateral has a decided side cusp and cutting point. The fourteenth has its inner cutting point bifid. The characters of the individual teeth are shown in the figure, which gives the central, the first, eleventh, fourteenth, thirty- seventh, and forty-second teeth. Genitalia (PI. XIV. Fig. C) as usual in Arionta, especially in A. Stearnsi- ana, but with this impor
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. TACHEA. 377 Lingual membrane (PI. X. Fig. B) long and narrow, quite as in Arionta. Teeth 42—1—42. Another membrane had 190 rows of 43—1—43 teeth. The eleventh lateral has a decided side cusp and cutting point. The fourteenth has its inner cutting point bifid. The characters of the individual teeth are shown in the figure, which gives the central, the first, eleventh, fourteenth, thirty- seventh, and forty-second teeth. Genitalia (PI. XIV. Fig. C) as usual in Arionta, especially in A. Stearnsi- ana, but with this important difference, that from the base of the dart sac (2) one thread-like organ (3) alone proceeds, the other being replaced by a sponge- like process (1), evidently a form of vaginal prostate. EXTRALIMITAL SPECIES OF EUPARYPHA. E. levis, Pfeiffer (see L. & Sh., I. 180), a species of the Lower Cali- fornia fauna, has erroneously been quoted from Columbia River and Southern California. TACHEA, Leach. Animal heliciform, mantle subcentral; other characters as in Patula. (See Bost. Journ. Nat. Hist., I. PI. VIII.) Shell imperforate, globose or subdepressed, white or yellow, ornamented with distinct bands; whorls 5, the last convex, tumid, descending at the aper- ture ; aperture broadly lunate, obsoletely angular; peristome thickened, re- flexed, its columellar margin constricted, callous. A genus of Middle and Southern Europe, one species also common to Amer- ica, perhaps imported by commerce. Our single species, T. hortensis, found only along the northeastern coast, and there usually restricted to the islands, agrees in its jaw with the other known species of the subgenus. It is stout, arched, with blunt, unattenuated ends; anterior surface with stout, few, separated ribs, denticulating either margin. The lingual membrane has 116 rows of 32—1—32 J<™ ot Tachea hortensis teeth each. The centrals have a subtriangular base of attachment, so greatly are the lo
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