CUMACEA FROM THE COPENHAGEN MUSEUM. 5 



BoDOTRiA siAiiEXSis, sp. n. (Plate I. figs. 10-15.) 



Description of adult Female. — Total length 2*1 ram. 



Carapace about one-fourth of total length. Median dorsal keel not very prominent 

 on carapace or on thoracic somites. Lateral keel rather faintly marked on anterior 

 part of carapace, becoming obsolete posteriorly ; not continued on to the thoracic 

 somites. Antennal tooth narrow and acute, almost spiniform. Basis of first legs 

 about four-fifths as long as the remaining segments together. Uropods about one- 

 fifth longer than the last two somites together, the rami sub-equal and five-sixths 

 as long as the peduncle, Endopod unsegmented, with nine spines on distal part 

 of its inner edge, increasing in size distally ; terminal spine slender. Exopod with 

 three unequal terminal spines and a series of setse on the inner edge. 



A transverse band of dark pigment occupies the region of the first leg-bearing 

 somite. 



Adult Male. — Total length 2-75 mm. 



Carapace less than one-fourth of total length. Rami of uropods about three-fourths 

 as long as the peduncle. Endopod with ten spines along the whole length of its 

 inner edge, increasing in size distally. 



Remarks. — This species resembles in many ways B. similis, in company with which 

 it was found ; but it is distinguished from that species by the lateral keel being 

 inconspicuous on the carapace, and absent altogether from the thoracic somites. 



Occurrence. — Gulf of Siam, " Between Koh Mesan and Cape Liant, 5-8 fathoms " ; 

 '' Koh Kam, 5-10 fathoms." Th. Mortensen Coll., Copenhagen Museum. Co-types 

 in British Museum. 



BoDOTRiA PARVA, sp. n. (Plate I. figs. 16-lS.) 



Description of adult Female. — Total length 1-5 mm. 



Carapace more than two-sevenths of total length. Dorsal edge with a depression 

 bounded behind by a sliglit crescentic transverse ridge near its hinder end. Two 

 faintly marked longitudinal ridges on sides of carapace, not reaching to posterior 

 margin nor joining the above-mentioned transverse ridge. Antennal tooth bluntly 

 rounded. No ridges on the free thoracic somites. Basis of first legs a little shorter 

 than the remaining segments together, Uropods slightly longer than the last two 

 segments together, the rami subequal and rather less than two-thirds the length of 

 the peduncle. Endopod with one spine on its inner edge about the middle of its 

 length, and another close to the apical spine, which is long and stout ; the inner 

 edge between the two spines is coarsely serrated, 'L'lie exopod has two unequal 

 terminal spines and no setae on its inner edge. 



Bemarks. — In having the antennal tooth of the carapace bluntly rounded and in the 

 armature of the uropods this minute species differs from all the other species of the 



