LARVAE OF DECAPOD CRUSTACEA 



3" 



Eye oval. Antenna : basis with long outer and inner spines ; scale without outer basal 

 seta. Maxillule with palp slender, of two segments. Maxilla with palp of three segments. 

 Maxillipede i with outer seta on segment i . 



Chelae not very large. Leg 5 with long exopod. Epipods with rudiment of podo- 

 branch on legs 1-3, without podobranch on leg 4. Four pairs of pleopods. 



Fig. 10. Thalassinid D. IV. St. 1581. 

 a. Side view. b. Telson. c. Head and rostrum. 



Thalassinid B.R. II (Fig. 11) 

 Barrier Reef St. 46. 



Rostrum i-i5 mm.; body 4-0 mm. 



Rostrum very broad, scarcely longer than antennule. Carapace with close-set 

 marginal spines in front. Abdomen: somites 1-3 without spines; somites 4 and 5 with 

 dorsal spine. 



Telson twice as long as wide, spines i and 2 wide apart, but near angle; posterior 

 margin convex, with long median spine and four spines either side. Spine formula 

 8, I, 8. . 



