EXPLANATION OF PLATE 9.—Syndesmon thalictroides; the leaves, etc., were used as negatives and the photographs were reduced by the engraver to less than one-half the natural size. Figs. 1, 2 and 3 show leaves from the same plant; figs. 4, 5 and 6 are from one and the same plant; figs. 7, 8, 9 and 10 are parts of the same plant; figs. 11, 12 and 13, also 14, 15 and 16 are each of one plant respectively; figs. 17 to 23 inclusive illustrate leaf variation, specimens taken from different plants, except figs. 22 and 23 which are from one and the same plant. DESCRIPTION OF NEW SPECIES OF STRATIOMYIDAE WITH NOTES ON OTHERS. JAS. S. HINE. In a collection of several species of Stratiomyidae from Ohio, and a number of western species, I find something which may be of interest to students of the family. Specimens of _Allognosta fuscitarsis_, Say, show some degree of variation in the extent of the pale color on the disc of the abdomen. Some of the females have the abdomen nearly or wholly black. Specimens of _A. obscuriventris_, Loew, have the body entirely black; the legs are darker and the form is considerably smaller than _fuscitarsis_. Both species are common at Columbus during May. PTECTICUS (SARGUS) TRIVITTATUS, Say. A species of _Ptecticus_ taken abundantly at Cincinnati by Chas. Dury agrees so well with Say’s _Sargus trivittatus_ that I cannot convince myself that it is anything else. Specimens when first taken agree more closely with Say’s description than the same specimens do after they have been in the cabinet awhile and have become dry. The green color that Say mentions is present in some while others are yellowish or brownish. The broad, dusky band that Say described as appearing on the basal part of each abdominal segment beyond the second is conspicuous, being of greatest extent on the fifth and sixth. EUPARYPHUS MAJOR n. sp.