Claus, 1872
Pereonites I and II fused (Phronimella elongata 1, Phronimella elongata 2). Body and P extremely slender, with weak musculature. P V long but delicate, with elongate subchela, ART 5 elongate, only slightly widened distally, with anterior margin dentate. UR II absent in female, rudimentary in male.
Monotypic.
Phronimella elongata (Claus, 1862)