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Show 326 MR. W. L. DISTANT ON THE RHYNCHOTA [Apr. 16, constitute the material described in tbe second part of that Catalogue ; the revision of the Pentatomida? treated in the first part, the Society has already done m e the honour to publish in their' Proceedings' (1900, p. 807). The introductory remarks there given are also applicable to this concluding instalment and need not be repeated. Owing to the very attenuated descriptions given in these catalogues, considerable synonymy has been created by other workers, which under the circumstances may cause regret but no surprise. Subfam. MICTINJE. M E L A N I A , gen. nov. $ . Body oblong, compressed. Head subquadrate, distinctly excavated between the apices of the lateral lobes ; antennae simple, third joint not dilated, first and fourth joints subequal in length ; rostrum passing the anterior coxa?, third joint shortest; pronotum about as loug as broad at base, lateral margins not denticulated, lateral angles not produced. Abdomen distinctly broader than corium, its lateral margins dentate, apical angles of second, third, fourth, fifth, and sixth abdominal segments distinctly spinous ; abdomen beneath at junction of second and third abdominal segments armed with two long diverging spines. Posterior femora wide apart, regularly incrassated, about equally thick throughout, armed above and on sides with four series of spinous tubercles, and with a short but robust spine near apex beneath ; posterior tibia? dilated on each side, convexly outwardly, and angulately and truncately narrowed on inner margin at about one fourth from apex. This genus is allied to Pternistria, Cipia, and Odontoloba, from all of which, apart from other characters, it may be separated by the dentate lateral margins of the abdomen and the spinous apical angles of the abdominal segments. The tuberculated posterior femora reflect a character in Prionolomia. In the female the posterior tibia? are simple, the posterior femora less tiiberculate than in the male, the abdomen unarmed, and the abdominal margins much less denticulate and spinous than in the other sex. MELANIA CIRACILIS. (Plate XXIX. fig. 4, $ .) 2 . Myclis gracilis Westw. in Hope Cat. ii. p. 11 (1842). o*. Dark castaneous, finely ochraceously pilose: connexivum piceous; eyes, abdominal spines, apex of scutellum, and subquadrate spots to connexivum pale ochraceous ; antenna^, anterior and intermediate legs, and the posterior tarsi ochraceous. Abdomen above black, with two discal longitudinal series of ochraceous spots. The antenna? have the first and fourth joints subequal in length, the second a little longer than the third, the first and fourth longest; the pronotum is granulate and coarsely punctate; the scutellum is irregularly transversely rugose, its apex levigate ; the |