. Fig. 21. E. lotigirostris. a, carapace and antennular peduncle from the side, x 13. 6, left antennular peduncle from above, x 13. c, third to fifth abdominal segments from the side, x 8. The lobe of the first segment of the antennular peduncle is large and strong but narrower than the second segment, above which it rises in an arch-like way (Fig. 21 a,b). Its distal end is divided into two nearly equal spines; a third and smaller spine may or may not arise lower down on the outer margin of the lobe—in one individual one antennule may have this spine and the other not; it is sometimes nearly
. Fig. 21. E. lotigirostris. a, carapace and antennular peduncle from the side, x 13. 6, left antennular peduncle from above, x 13. c, third to fifth abdominal segments from the side, x 8. The lobe of the first segment of the antennular peduncle is large and strong but narrower than the second segment, above which it rises in an arch-like way (Fig. 21 a,b). Its distal end is divided into two nearly equal spines; a third and smaller spine may or may not arise lower down on the outer margin of the lobe—in one individual one antennule may have this spine and the other not; it is sometimes nearly as strong as the other two spines. A strong spine runs over the third segment from the middle of the distal margin of the second; there is a low keel along the distal part of the inner margin. The dorsal keel of the third segment is high and strong. The terga of the first and second abdominal segments are produced into small, wide, rounded projections mid-dorsally; there is a very strong compressed spine-like process from the third abdominal segment and much smaller spine-like processes, not com- pressed, from the fourth and fifth segments. The posterior margins of the terga of the fourth and fifth segments are deeply incised (Fig. 21 c). The terminal process of the male copulatory organ has a heavy foot-like base, bigger
Size: 2953px × 1693px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
