. Fig. 48. Phoxocephalus coxalis, a. Side-plate 4 (anterior edge on right), b. Gnathopod 1, with palmar margin further enlarged, c. Peraeopod 3. d. Peraeopod 4. e. Peraeopod 5. /. Pleon segment 3. Gnathopods 1 and 2 as in tenaipes Steph. 1925, the very narrow junction between 5th and 6th joints reminiscent of Eusirus, 6th joint broadly subquadrangular, longer than wide, palm transverse, convex, setulose, defined by a strong tooth with a spine. Peraeopods 1 and 2 as in tenuipes, dactyls nearly four-fifths as long as 6th joint. Peraeopod 3 elongate, 2nd joint slender, cylindrical, dactyl t
. Fig. 48. Phoxocephalus coxalis, a. Side-plate 4 (anterior edge on right), b. Gnathopod 1, with palmar margin further enlarged, c. Peraeopod 3. d. Peraeopod 4. e. Peraeopod 5. /. Pleon segment 3. Gnathopods 1 and 2 as in tenaipes Steph. 1925, the very narrow junction between 5th and 6th joints reminiscent of Eusirus, 6th joint broadly subquadrangular, longer than wide, palm transverse, convex, setulose, defined by a strong tooth with a spine. Peraeopods 1 and 2 as in tenuipes, dactyls nearly four-fifths as long as 6th joint. Peraeopod 3 elongate, 2nd joint slender, cylindrical, dactyl three-quarters length of 6th joint. Peraeopod 4 more elongate than peraeopod 3, 2nd joint fusiform, more strongly convex at the distal anterior margin which bears several groups of long setae, dactyl very slender, spiniform, nearly as long as 6th joint. Peraeopod 5, 2nd joint broadly expanded, no plumose setae on any of the joints. In other respects—telson, uropods, mouth-parts—as in holbolli. Remarks. As regards the gnathopods and peraeopods this species is the counterpart of the northern tenaipes, Steph., though there are several differences in these appendages, notably the 2nd joints of peraeopods 3 and 4. The enormous development of the 4th
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