CETJSTACEA PEOM KUTCH AND SIND. 5 



granular edge, extending from the costal spine two-thirds the length, where the 

 lateral, flexuously bent, border of the equalljr finely serrated rim of the posterior 

 margin comes in. The side of the carapace below the serrated line of the postero- 

 lateral margin is densely covered with fine, slightly unequal, granules. The sub- 

 hepatic region which extends on the ventral side of the carapace from the inner 

 angle of the eye to the costal spine is throughout very distinctly granular, (includ- 

 ing the lower side of the antero-lateral spines), and is separated from the antero- 

 pleural region by a raised granular line ; the pleural region itself is only near 

 this line granular; on the inner area it is nearly smooth, and so is also its 

 internal slightly thickened margin, the upper edge of which is curved, rather 

 elevated, and extending to the base of the antennge. 



The basal joint of the external antennae occupies the inner angle of the orbit ; 

 it is very short, oblique, somewhat rugose on the surface and thicker at the end, 

 with a short prolongation on the lower external side, coalescing with the inner 

 lower spine of the orbit and reaching to within a short distance from its tip. 

 The so-called auditory tubercle at the outer base of the antennse is very small, oval. 

 The pit for the inner antennae, or antennulae, is oval, with the lower margin 

 insinuated, entire ; its length equals about half that of the orbit ; a shallow groove 

 runs from it above the base of the external antennae. The greater part of the 

 internal cavity of the pit is occupied by the subtrihedral auditory sack, (see fig. 2a, 

 pi. i,) which is attached to the external side of the small basal joint of the 

 antennulse. The inter-antennulary ridge which separates the pits is short, its 

 lower portion is concave below and anteriorly it is produced into a short point. 

 It is not very well preserved in any of the specimens which I have examined, 

 but it certainly does not appear to have projected beyond the frontal margin, a 

 character which Milne-Edwards considers essentially distinctive for all species 

 of Neptmms. The epistome is sulcated for the whole of its width ; it is longest 

 in the middle, the posterior raised edge being angularly bent and entirely minutely 

 serrated. The endostome is placed a little higher than the epistome ; it is nar- 

 rowest in the middle, divided by a sharp crest ; the lateral endostomic ridges are 

 oblique, at the posterior edge considerably thickened and raised. 



Of the maxillary feet only the outer pair is partially preserved. The basilary 

 joint, or epipodite, is very thin; the first joint of the endopodite is triangular, with 

 an obtuse angle below and a short cross groove near it, extending from the inner 

 margin to half the width. The second joint of the endopodite is the largest ; its 

 proportions of length to breadth are as 5 : 2 ; the base is narrowest, nearly straight 

 with the usual tooth on the outer side ; the inner margin is convex, the outer 

 concave, and the upper still more so ; at a distance of two-fifths of the breadth 

 from the inner margin runs a longitudinal groove, but it does not reach the 

 base. The third joint is sub-quadrangular, about two-thirds the length of the 

 second joint ; its lower and outer margins are flexuous, the inner slightly oblique, 

 and the upper much so, the upper posterior angle being considerably produced 

 and rounded, a character upon which Haan based his sub-genus Amphitrife, 



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