Planche 1 issued from : G.D. Grice & K. Huisemann in Proc. U.S. natn. Mus., 1967, 122 (3583). [p.57, Figs.162-173].
Male (from Indian Ocean): 162, habitus (dorsal); 163, idem (lateral left side); 164, urosome (dorsal); 165, segments 15-18 of left A1; 166, Md (mandibular palp); 167, Md (biting edge); 168, A2 (distal setae of endopod broken off); 169, Mx1; 170, Mx2; 171, Mxp; 172, P1; 173, P5.

Nota: Head and 1st thoracic segment incompletely separate. Anal segment longer than preceding segment and furca. Rostrum absent. Left A1 geniculate. Endopod of A2 2/3 the length of exopod. Edge of mandible blade with spine-like hairs and 3 spiniform teeth. Mx1 internal lobe with 1 seta, exopod with 4 setae, 2nd basal segment with 1 seta. Mx2 and Mxp with reduced number of setae. P5 biramous, exopods 3 segmented; endopod of right leg 3-segmented, left leg 2-segmented.
The present male differs from D.longus and D. minutus in the absence of a rostrum and in the segmentation of the endopods of P1 and P2.