Taste-cups occur without any known exception in the longicorn beetles. In _Leptura canadensis_ they are numerous; in _Euryptera lateralis_ they are abundant along and near the middle of the anterior half of the labral region, and in _Cyllene robiniæ_ Forst. (or _pictus_ Drury) they are more numerous than usual, extending in an unbroken sensory field from near the front margin of the clypeal region to near the front edge of the epipharynx. The cups vary much in size, some being one-half as large as others; and those on the sides of the sensory field bear short, and a few others rather long, bristles, showing that the taste-cups are modified tactile bristles. The Tenebrionidæ are fairly well endowed with taste-cups, their number in _Eleodes obsoleta_ Say amounting to 30 or 40. Those of the Meloidæ especially are unusual in size and number. [Illustration: FIG. 289.—Epipharynx (_ep_) of Nemognatha: _cl_, clypeus; _gh_, gathering hairs; _tc_, triangular sensory field dotted with taste cups; _A_, the field enlarged. ] In _Nemognatha lurida_ Lec. (Fig. 289) the front edge of the epipharynx contains about 80 remarkably small taste-cups, arranged irregularly in a triangular sensory space, and not more than ¼ to ⅙, as large as those on the maxillæ of the same beetle. Unless the former structures are gustatory it is difficult to account for their presence here, and it will be observed that the taste-cups in Epicauta are unusually abundant. Thus in the middle and near the front of the epipharynx of the blister-beetle over 100 gustatory cups were counted. They are conical, papilliform, and truncated at the end as if open, the edge of the opening being ragged, though bearing no bristle, except in a few cases. Around the edge of the sinus, on the under side of the labrum, is a regular marginal row of large, longer, more distinctly chitinized taste-cups, whose walls are streaked up and down by chitinous thickenings. In _E. callosa_ Lec. there are about 55 taste-cups under the labrum, besides about 10 cells, which may be gustatory structures, situated on either side of a median setose ridge which passes back under the clypeal region. The taste-cups of the leaf-beetles are fairly numerous, judging from an examination of _Diabrotica vittata_. The surface of the epipharynx is pilose, but the median region is naked, and on the anterior half bears from 11 to 12 taste-cups, arranged each side of the median line in a rude Y. On each side, at the base of the labial region, are two sensitive fields, each bearing about 25 to 26 taste-cups. More were seen under the clypeus.