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PROCEEDINGS OF THE NATIONAL MUSEUM 



palms of giiathopods in both sexes nearly smooth, female smoother 

 than male, sparsely serrate, the serrations larger near finger hinge; 

 gnathopod 1 moderately slender, article 6 evenly expanded through- 

 out, article 7 less than one fourth as long as article 6; eyes round. 

 Mouthparts like L. spinicarpa figured by Sars (1895, pi. 100). 



Figure 5.- — Leucothoe hyhelia, new species, holotype, male, 3.4 mm., Reish sta. E-158 

 a, lateral view; b, c, gnathopods 1, 2, with inset of palmar edge of a female second 

 gnathopod in fig. c; d, pereopod 2; e, uropod 3;/, telson. 



Holotype: USNM 107574, male, 3.4 mm. 



Tjrpe locality: Reish station E-158, Parry Island, Eniwetok Atol], 

 June 30, 1957. 



Material: Reish stations E-147 (4), E-158 (5). 



Relationship: This species differs from Leucothoe tridens Stebbing 

 (1888, pi. 47) by the broader second article of pereopod 5, the small 

 point at the apex of the telson, the much shorter third article of the 

 first antenna. It differs from Leucothoe sjnnicarjm (in Sars 1895, pis. 

 100, 101, fig. 1) by the broader and more quadrate second article of 

 pereopod 5, the unevenly and sparsely denticulate palm of the second 

 gnathopods in both sexes, and the shorter finger of gnathopod 1. 

 The new species and the two mentioned above are perhaps the most 

 closely related trio in the genus but the differences seem to be vmiform. 



Distribution: Eniwetok Atoll. 



Leucothoe micronesiae, new species 



Figure 6 



Diagnosis: Article 3 of antenna 1 about 40% as long as article 2; 

 article 6 of gnathopod 1 widest at its base, tapering to a blunt point, 



