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Show "08 MR. w. L. DISTANT O N THE BHYNCHOTA [NOV. 20, fragmentary knowledge of the Order in those days is considered, with the obscurity that then enshrouded the Fabriciau species, which Westwood seems to have almost ignored. Much of this synonymy has been elucidated, especially by the late Dr. C. Stal, who in 1862 visited this country, examined then collection and made notes thereon, which were published in the Ofv. Vet.-Akad. Forh. 1862, p. 501. These were again given, sometimes in a revised form, in his subsequent ' Enumeratio Hemipterorum.' Like all Stal's work, this casual examination produced reliable correction, but much was still left in an obscure condition, and our catalogues contain many doubtful references to a number of Westwood's species described from this collection. I have to thank Prof. Poulton, who has succeeded Prof. West-wood at Oxford, for placing the whole collection in my hands for comparison and revision. I have carefully compared all the types with those contained in the British Museum and my own collection, with the result of finding that though many of Westwood's species must rank as synonyms, he has on the other hand priority in many cases over the descriptions of more recent workers, who have failed to recognize his species by their short descriptions and unrevised generic position. It is probable that Continental describers may also be compelled to withdraw some of their own descriptions for a similar reason, and the figures with which the Society has allowed me to illustrate this communication may facilitate that result. Some few species are in such indifferent condition as to render generic identification impossible-at least with certitude; but in most cases these are figured, and thus eventually, when better specimens reach the hands of workers, they can be recognized and then generically disposed. Subfam. DISCOCEPHALIN^:. DINOCORIS UNICOLOR. Dinidor unicolor Westw. in Hope Cat. i. p. 25 (1837). Antileuchus piceus Dall. (part.) List Hem. i. p. 165. n. 6 (1851). Dinocoris unicolor Stal, En. Hem. ii. p. 9. n. 16 (1872). Dinocoris piceus Dist. (part.) Biol. Centr.-Am., Rhynch. i. p. 46. n. 2 (1880). Iu the Biol. Centr.-Amer. I had followed Dallas in placing the D. unicolor Westw. as a synonym of D. piceus Pal. Beauv. On examination I find the two species are quite distinct, that of Westwood having a greater width of abdomen and the upper surface distinctly rugose. DINOCORIS TESSELLATUS. Dinidor tesselatus Westw. in Hope Cat. i. p. 24 (1837). Dinocoris tessellatus Stal, En. Hem. ii. p. 9. n. 14 (1872). A species closely allied to the D. amplus Walk., but having the second and third joints of the antenuae wholly black. |