DR WILLEY FROM THE SOUTH SEAS. 409 



Genus. Pontania Latr. 1829. 

 20. Fontonia ascidicola Borradaile, 1898, Figs. 6ct — 66. 



Pontonia ascidicola, Borradaile, Ann. Mag. N. H. (7) ii. p. 389 (1898). 



Carapace. Rostrum short, reaching only half way up the first joint of the 

 antennular stalk. The free end is strongly curved downwards and lacks an inferior 

 keel. The antennal spine alone is present and the pterygostomial angle is rounded. 



Antennae. The stalks of the two pairs of antennae and the scale of the second 

 are subequal. The scale is broad and of but moderate length. 



Mouth-limbs. These have not been dissected out. The third maxillijjud ends opposite 

 the second joint of the antennular stalk (Fig. 66). 



Legs. The first pair of legs are rather unusually strong. Then- meropodite reaches 

 the end of the first joint of the antennular stalk. The wrist is a little shorter than 

 the meropodite and the hand a little shorter than the wrist. The fingers are as long 

 as the palm. The second pair are unequal. In the larger, the hand is of great size, the 

 fingers half the length of the palm, the wrist short and stout, the meropodite longer than 

 the wrist, the movable finger bearing one tooth and the immovable finger two. In 

 the smaller leg of the second pair, the hand is still the longest joint, the movable 

 finger is narrow and crosses its fellow at the tip, and both are provided with teeth 

 as in the longer hand. In the female both legs of the second pair are relatively 

 shorter than in the male. The dactyles of the remaining legs are short, fairly stout, 

 and provided with several spines underneath. 



The abdominal pleurae are greatly developed in the female. 



Tail-fin. The two rami of the uropod are subequal in the male. In the female 

 the endopodite is the longer. In each case the telson is as long as the exopodite, 

 and bears the usual six spines at the free end. 



The length is 13 mm. 



1 (/• and 1 ? from Blanche Bay, New Britain. 



Genus. Conchodytes Peters, 18.51. 



21. Conchodytes meleagrinae Peters, 18.51. 



For references see P. Z. S. 1898, p. 1007. 



3 ?, from Sandal Bay, Lifu, Loyalty Islands, and from Engineer Group and Conflict 

 Group, British New Guinea, respectively. 



Family. Palaemonidae. 

 Genus. Palaemon Fabr., 1798. 



22. Palaemon lar Fabr., 1798. 



For references see P. Z. S. 1898, p. 1008. 



4 t/" of various ages, taken near Cape Gazelle, New Britain. 



