684 ON CRUSTACEA BROUGHT BY DR WILLEY FROM THE SOUTH SEAS. 



PLATE LXVIII B. 



BenoeiJa periophthabni, n. sp. 



n.s. Natural size of specimen, of which much enlarged dorsal view is given at the 

 top of the plate. 



C.D. Head and first peraeon segment, in dorsal view, after separation from the rest of 

 the trunk. 



C.V. The same in ventral view, one of the first gnathopods removed from the peraeon 

 segment to show the mouth-organs. 



a.s., a.i. First and second antennae. 



I.s. Upper lip. 



in.m. MandiViles. 



mx. 1, 2. First and second maxillae. 



■mxj). MaxUlipeds. 



gnp. 1, 2. First and second gnathopods. 



prp. 5. Fifth peraeopod. 



pip. 2. Second pleopod. 



The mouth-organs are magnified to a higher scale than the other details. 



PLATE LXIXa. 



Cubaris cinctutus (Kinahan). 



n.s. Lines indicating natural size of specimen of which a magnified dorsal view is given above. 



C. V. Ventral view of anterior part of head, with first antennae and upper lip in position. 



Per. s. \. Ventral view of first peraeon segment, with first gnathopod in position. 



T.D. Dorsal view of pleon from the fourth segment to the telson and uropods. 



T. Y. Ventral \-iew of uropods and telson. 



a.s., a.i. First and second antennae to the same scale, and higher-magnification of first. 



I.S., l.i. Upper lip. and lower. 



m. Mandible, with distal part more magnified. 



mx. 1, mx. 2. First and second maxillae partially shown, with distal extremity more magnified. 



mxp. Maxilliped, with distal part more magnified. 



gnp. 1, prp. b. First gnathopod and fifth peraeopod, distal part of former more magnified. 



C.D. Dorsal view of head with part of first peraeon segment, from a second specimen. 

 In this and in the fig. T.D. the colour pattern is shown. 



The two scales of magnification used for the mouth-organs are respectively higher than 

 those used for the other details. 



PLATE LXIX B. 



Philoscia lifueiisis, n. sp. 



n.s. Lines showing natural size of specimen figured above. 



m. Mandible. 



mx. 1. First maxilla, without inner plate. 



7ii.xp. Maxillipeds. 



ynp. 1. First gnathopod. 



prp. 4. Terminal portion of fourth peraeopod or sixth trunk-leg. 



T., urp. Caudal segment with one of the uropods. 



