62 CRUSTACEANS OF THE 



between the orbits; these lobes are declivous forward and 

 towards the orbits and are separated from one another by 

 the meso<^astric furrow that, after bifurcating, extends only 

 over the anterior fourth part of the cephalothorax. In 

 Menippe Panope, however, the interregional groo- 

 ves are well-defined, though Hilgendorf informs me 

 that they are less conspicuous than in Herbst's figure. 

 The whole upper surface of the cephalothorax shows, under 

 the lens, an extremely fine and close microscopic granu- 

 lation, but it appears smooth to the naked eye; 

 only just near the penultimate autero-lateral teeth these 

 minute granules are a little larger, though still only visible 

 by means of a magnify ing-gl ass. The anterior moiety of 

 the cephalothorax of Menippe Panope, however, is covered 

 anteriorly and on the a n ter o-later al regions 

 with numerous red pearly granules at least 

 twice as large as the microscopic granules described 

 above and observed also on the species from Tranquebar. 

 Such large granules are observed, in Menippe Orimanni, 

 only on the front, just behind the free border, so that 

 they are already fully wanting on the epigastric lobes. 

 On each side of the upper surface of the cephalothorax 

 one observes six or seven impressed points, situated in a 

 semicircular line, that runs from the impressed point des- 

 cribed above, just before the ends of the H-shaped figure, 

 to the extremity of the ridge of the last antero-lateral 

 tooth. The upper surface is also somewhat pitted on the 

 front, just behind the supra-orbital margins and near the 

 autero-lateral border of the carapace. 



The front is obliquely deflexed and as prominent as in 

 Menippe Panope ; it is cut by a rather deep trian- 

 gular notch into two obtuse lobes. The granulated fore 

 edge of these lobes shows at its outer angle a small ob- 

 tuse tooth before passing into the supra-orbital margin, 

 so that the front may be described as four-lobed; these 

 small external teeth reach about as far forward as the 

 inner lower angle of the orbits and form an obtuse angle 



Notes from tlip Leyden JVIuseum , Vol. XXI. 



