A review of the families and genera of the hyperiidean amphipod superfamily Phronimoidea Bowman & Gruner, 1973 (Crustacea: Amphipoda: Hyperiidea) Author Zeidler, Wolfgang text Zootaxa 2004 2004-07-14 567 1 66 journal article 4802 10.11646/zootaxa.567.1.1 173cf168-6357-4b76-955f-7b523590ff1d 1175­5334 5259734 41C7D868-7BD9-46F4-94F1-EBEA427E2836 Primno abyssalis Bowman Primno abyssalis Bowman , in Fulton, 1968 :104,109. Type material The holotype female is in the USNM (Cat. no. 213613), and two female paratypes are in the collections of Scripps Institution of Oceanography : in spirit . Remarks This is the largest species of Primno , with adults reaching 21 mm in length. Bowman (1985) suggests that this species is derived from P. macropa , or its progenitor, which was originally limited to the southern hemisphere, but during the ice age ranged into the North Pacific. When the oceans warmed again the continuity was broken, leaving the North Pacific population isolated. Its distribution is now restricted to the subarctic province of the North Pacific Ocean.