Discovery reports (1938) Discovery reports discoveryreports17inst Year: 1938 LARVAE OF DECAPOD CRUSTACEA 327 posterior margin slightly concave, with long median spine and four spines either side; spine formula 8, 1,8. Eye rather pointed, black. Antenna: basis with inner spine; scale with long outer basal seta. Palp of maxillule and maxilla of three segments. Maxillipede i with outer seta on segment i. Chela of leg i large, dactyl longer than palm. Leg 5 without exopod. Epipods absent. Three pairs of pleopods. Callianassa? VIII (Fig. 28) Barrier Reef St. 44. Rostrum 1-35 mm.; body 4-85 m
Discovery reports (1938) Discovery reports discoveryreports17inst Year: 1938 LARVAE OF DECAPOD CRUSTACEA 327 posterior margin slightly concave, with long median spine and four spines either side; spine formula 8, 1,8. Eye rather pointed, black. Antenna: basis with inner spine; scale with long outer basal seta. Palp of maxillule and maxilla of three segments. Maxillipede i with outer seta on segment i. Chela of leg i large, dactyl longer than palm. Leg 5 without exopod. Epipods absent. Three pairs of pleopods. Callianassa? VIII (Fig. 28) Barrier Reef St. 44. Rostrum 1-35 mm.; body 4-85 mm. Rostrum rather broad, nearly parallel-sided. Carapace with small close-set spines in front. Abdomen: somite 2 with enormous dorsal spine curving over somite 3 and reaching middle of somite 4; somites 3-5 with high smooth ridge. Pleura rounded. Fig. 28. Thalassinid VIII. a. Side view. b. Telson. Telson: length about i\ times width; lateral spines widely spaced; posterior margin slightly concave. Eye rather pointed, black. Antennal scale with long basal seta on outer edge. Palp of maxillule and maxilla of three segments. Maxillipede i with outer seta on segment i; epipod a small papilla. Chelae of legs i and 2 not fully formed. Leg 5 without exopod. Epipods absent. Three pairs of pleopods. Group II D Telson of C II type Callianassa? D. XVII (Fig. 29) Discovery St, 406. Rostrum 1-25 mm.; body 5-85 mm. Rostrum rather narrow, little longer than antennule. Carapace with nine marginal spines. Abdomen: somite 2 with long dorsal spine as long as somite 3;
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