Marine isopods collected in the Philippines by the fisheries steamer Albatross in 1907-08 . re are no eyes. The basal article of the first antennas is longand narrow and extends forward; it is unarmed; the second andthird articles are short and subequal and together are about halfas long as the basal article; the flagellum is composed of 14 arti-cles, the secondary filament of 6 articles. The second antennas areslender and frail; the first article is short, about as broad as long;the second, fourth and fifth articles are subequal and each is aboutthree times as long as the first article; t
Marine isopods collected in the Philippines by the fisheries steamer Albatross in 1907-08 . re are no eyes. The basal article of the first antennas is longand narrow and extends forward; it is unarmed; the second andthird articles are short and subequal and together are about halfas long as the basal article; the flagellum is composed of 14 arti-cles, the secondary filament of 6 articles. The second antennas areslender and frail; the first article is short, about as broad as long;the second, fourth and fifth articles are subequal and each is aboutthree times as long as the first article; the third is minute; the flag-ellum is composed of 7 articles. A scale is articulated to the secondarticle. (See fig. 1.) The first segment of the thorax is united with the head to form acarapace, as is usual in this genus. The second segment (first freesegment) is produced on either side of the epimeron in a small spineythe post-lateral angle being rounded. The epimeron is produced in Proceedings U. S. National Museum, Vol. 43—No. 1926. 159 160 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. a long, acute process, extending forward on either side of the third segment (second free segment) has three small spines onthe lateral margin anterior to the epimeron, which is small, and one spine posterior to the epimeron. Thefourth segment (third free segment) hasthree spines on the lateral margin ante-rior to the epimeron, the first beingsmall, the two following ones long andacute, and two small spines posteriorto the epimeron. The fifth segment(fourth free segment) as well as thesixth segment (fifth free segment) haveeach three spines on the lateral marginon either side anterior to the epimeron,the first one being small and the twofollowing ones long and acute. Theseventh or last thoracic segment (sixthfree segment) has two long, acute spinesanterior to the epimeron. The fifth andsixth segments (fourth and fifth freesegments) are the longest and are sub-equal. The first five
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashi, bookyear1910
