. Bulletin - United States National Museum. Science. 9S. GENUS BOPYRISCUS, new genus. Very close to J\'ohopyrux. First four segments of abdomen distinct in female; last two seg- ments fused. Pleopods consist of live pairs of doul)le-branched lamelhw Uropoda absent. Dis- tal segment of first lamelhe of marsupium pro- duced in a small lobe. Male with tirst three segments of abdomen distinct; last three fused in the terminal piece, which is trilobate. Uropoda absent. BOPYRISCUS CALMANI, new species. Body somewhat asymmetrical, turned more or less to one side, which is shorter than the other side;
. Bulletin - United States National Museum. Science. 9S. GENUS BOPYRISCUS, new genus. Very close to J\'ohopyrux. First four segments of abdomen distinct in female; last two seg- ments fused. Pleopods consist of live pairs of doul)le-branched lamelhw Uropoda absent. Dis- tal segment of first lamelhe of marsupium pro- duced in a small lobe. Male with tirst three segments of abdomen distinct; last three fused in the terminal piece, which is trilobate. Uropoda absent. BOPYRISCUS CALMANI, new species. Body somewhat asymmetrical, turned more or less to one side, which is shorter than the other side; longer than wide, 5 mm.: 3 mm. Head deeply set in thorax, wider than long, with the front nearly straight or but slightly rounded, and the antero-lateral angles acute. Eye;-i are present in the form of black pigment. The tirst pair of antenna' are small and are composed of three articles. The second pair are also small, and composed of only a few iirticles. The seven segments of the thorax are distinct of the tirst four are bilobate; the lateral margins of the last three are straight. Ovarian bosses are faintly indicated on the iirst four'seg- ments where they occupy the anterior part of the lat- eral margin. Lateral to them are the narrow epimeral plates, which are but faintly indicated. The tirst four segments of the abdomen are distinct, being separated by faint lines; the last two segments are fused, the line separating them being obliterated. There are no uropoda. The pleopoda consist of live pairs of double-branched, small rounded lamella'. There are live pairs of incul)atory lamell;i> that do not completely inclose the incubatory pouch. The tii'st pair have the distal segment produced at the extremity in a small lobe. The male has the frontal margin of the head rounded. E3'es distinct, situated near the posterior margin. All seven segments of the thorax distinct. The first three seofments of the abdomen are. Flii. (317.—BOPYRISCUS CAL- MANI. a, Female, x 11§. 6, F
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
