A revision of the bathyal and abyssal necrophage genus Cyclocaris Stebbing, 1888 (Crustacea: Amphipoda: Cyclocaridae) with the addition of two new species from the Atlantic Ocean Author Horton, Tammy tammy.horton@noc.ac.uk Author Thurston, Michael H. text Zootaxa 2014 2014-05-20 3796 3 507 527 journal article 5600 10.11646/zootaxa.3796.3.6 4fd22274-dd46-49bd-b592-47f2a867e8b1 1175-5326 4915303 1C2F0BA0-14A9-4E9F-B8B1-70CD6D1C8F0F Key to the species of Cyclocaris 1. Head without prominent eye lobe; single pair of eyes or eyes covering whole of head (may fade in alcohol)............... 2 - Head with distinct subtriangular eye lobe; two pairs of eyes present (may fade in alcohol)............................3 2. Eyes covering whole of head; Arctic Ocean, north-west Pacific Ocean, cold water species............ .. Cyclocaris guilelmi - Large eye not covering whole of head; Pacific Ocean species................................... Cyclocaris tahitensis 3. Pereopods 5–7 merus expansion broad, (L/W ratios 1.6, 1.7, 2.2 for P5–7 respectively) (see Figure 10 : P5–7); Pereopod 6 basis with bevel; basis broadly expanded, subquadrate (see Figure 10 :P6)................................. Cyclocaris franki - Pereopods 5–7 merus expansion narrower, (L/W ratios 2.2, 2.8, 2.9 for P5–7) (see figure 6: P5–7); Pereopod 6 basis without bevel; basis expanded, oval (see Figure 6 :P6)..................................................C yclocaris lowryi