616 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.41. 



family ought to be united with the Bodotriidae, and the new species 

 now described brings a little additional evidence for this by having 

 male pleopods that, in the form of the endopod, resemble those of 

 Cumopsis more than those of Vauntompsonia and by the number and 

 form of its branchial lobules. The most surprising feature of the 

 new species, however, is the fact that only three pairs of pleopods 

 are present in the male instead of the five pairs that are universal 

 throughout the extended family Bodotriidae. This character helps 

 to diminish the distance separating this family from the Leuconidse, in 

 which only two pairs of male pleopods are present. Possibly the 

 three-segmented antenna of the female may point in the same direc- 

 tion, for this character is found in some species, at least, of the 

 genus Leucon} 



LEPTOCUMA KINBERGII G. O. Sars. 



Leptocuma Hnbergii G. O. Sars, Ki^l. Svenska Yet. Akad. Handl., vol. 11, No. 

 5, 1873, p. 24, pi. 6.— Calman, Trans. Zool. Soc, vol. 18, 1907, p. 30. 



The specimen is a female with embryos in the marsupium. It 

 measures 17 mm. in length of body and is thus intermediate in size 

 between the two previously recorded. In most points it agrees with 

 the large specimen which I have described from the Copenhagen 

 Museum rather than with that of Sars. The second legs, however, 

 fall considerably short of the anterior margin of the carapace. The 

 peduncle of the uropods is slightly shorter than the last somite; the 

 exopod is equal to, and the endopod a little longer than, the peduncle. 

 Of the two segments of the endopodite the second is about two-thirds 

 the length of the first, as in Sars' figure. The basis of the third 

 maxilliped is not produced distally and the distal segments are not 

 expanded. 



The Albatross specimen was taken in the type-locality of the spe- 

 cies, off the mouth of the Rio de la Plata. I have already recorded 

 the occurrence of the species in the Straits of Magellan. 



Locality.— Albatross station 2765; lat. 36° 43' 00" S.; long. 56° 23' 

 00" W.; lOi fathoms; U.S.N.M. 44134; 1 female. 



LEPTOCUMA MINOR, new species. 



Ovigerous female. — Total length, 7.5 mm. 



Carapace slightly more than one-fifth of total length, its vertical 

 height less than three-fourths of its length, moderately compressed. 

 The pseudorostrum is short and truncated, but the lateral plates meet 

 in front of the ocular lobe for a distance about equal to one-half 

 the length of the lobe. The eye is pigmented. The antennal notch 

 is more open than in L. Mnbergii. The first leg-bearing somite is 

 only exposed on the dorsal surface; the second and third have the 



I Sars, Arch. Math. Naturvid., vol. 4, pp. 24, 27, pi. 28, fig. 3. 



