Marine isopods collected in the Philippines by the fisheries steamer Albatross in 1907-08 . ms, in greenmud. Type specimen, catalogue number 40926, United States National Museum. Genus ORBIONE Bonnier. The uropoda are biramous in the female of this genus and not single-branched asdescribed by Bonnier. This genus differs from Gigantione Kossmann, as it also doesfrom Parapenseon, in having all six segments of the abdomen of the female lamellate,while in those genera only five segments of the abdomen of thefemale are lamellate. It also differs from Gigantione in the appear-ance of the male, w
Marine isopods collected in the Philippines by the fisheries steamer Albatross in 1907-08 . ms, in greenmud. Type specimen, catalogue number 40926, United States National Museum. Genus ORBIONE Bonnier. The uropoda are biramous in the female of this genus and not single-branched asdescribed by Bonnier. This genus differs from Gigantione Kossmann, as it also doesfrom Parapenseon, in having all six segments of the abdomen of the female lamellate,while in those genera only five segments of the abdomen of thefemale are lamellate. It also differs from Gigantione in the appear-ance of the male, which is figured herein for the first time. Orbione penei Bonnier. Orbione penei Bonnier, Travaux de la Station Zool. de Wimereux, vm, 1900,p. 280-282, pi. xii. Locality: Station 5181, Antonia Island (S.), S. 63° W., mi.(11° 36 40 N., 123° 26 35 E.), at a depth of 26 fathoms, inmud and fine sand. Bonniers specimen was from Hongkong. A male and a female were collected by the Albatross and the151- male is here figured. Heretofore the male has been unknown. Genus PARAPENiEON The uropoda are biramous in the female of this genus and not single-branched asheretofore stated, agreeing in this respect with Orbione Bonnier as amended (see above).It differs, however, from Orbione in having the abdomen of the female with five seg-ments lamellate, while in Orbione the abdomen of the female has six segments lamel-late. The female of Parapenxon differs from the female of Pleurocrypta in havingthe uropoda biramous (they are single-branched in Pleurocrypta) and in having pleuradeveloped on the segments of the thorax. The female of this genus is similar to the female of Gigantione Kossmann, but the malediffers from the male of that genus in having all the segments of the pleon unitedand not distinct as in Gigantione, and in the absence of pleopoda and uropoda, whichare well developed in the male of Gigantione. MARINE ISOPODS FROM THE PHILIPPINE ISLANDS. 41 Parapenaeon bonnier
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