Dactylopius hymenocleœ, n. sp.—♀. Black when dry, entirely covered and concealed by the firm snow-white ovisac, forming a rounded mass about 4 mm. diam. These masses are adherent to one another, forming very conspicuous white cottony balls on the plant, having a diameter of from ten to twelve mm. The surface of the ovisac is rough, but not at all ribbed. The female, boiled and flattened under a cover-glass, is oval, about 4 mm. long. After being boiled in caustic soda, soaked in alcohol, and mounted in balsam, the insect is found to exhibit two different pigments: one a pale magenta, the other a dark bluish green. Skin with very numerous small circular glands, and a good many rather large dagger-shaped spines, in the caudal region. Legs and antennæ pale brown; legs fairly stout; coxa 99. Femur with trochanter 144, tibia 72, tarsus with claw 60 μ; claw digitules slender, with a very small knob; claw with a minute denticle on the inner side just before the tip; antennæ 7-segmented, the segments measuring as follows in μ:—(1) 28. (2) 25-30. (3) 23-25. (4) 23-31. (5) 15-19. (6) 24-28. (7) 59-64. Embryonic larva large.