170 Bulletin Vanderhilt Marine Museum, Vol. V 



propodus and interfitting with a node on the posterior side of the 

 dactyl; the dactyl is stocky, quite setigerous, especially on the under 

 side ; the distal end of the dactyl is curved and is fluted or bevelled, on 

 the outer side into four to six rounded ridges in pairs of unequal 

 length, these being blunted distally, thus giving the tip a series of den- 

 ticle-like rasps. These rasps are much stronger on the fourth pair of 

 legs. 



The eyes are large, set on a short calcareous stalk that projects only 

 a very small rounded process on the dorsal surface of the cornea ; the 

 cornea is large, hemispherical, set obliquely dorso-terminal, with good 

 visual range in all directions. 



The antennulae are slender and fold transversely within the f ossett 

 which is divided into two well separated chambers by a strong median 

 process. 



The antennae have the peduncular articles small, fitted in between 

 the outer side of the antennular f ossett and the inner side of the in- 

 ferior orbital angle ; but not extending in the orbital sinus, which is 

 closed by the meeting of the upper and inferior orbital angles; the 

 flagellum is very fine, about equal in length to the long diameter of the 

 orbit. 



The external maxilliped is about one and one-half times as wide as 

 long, subrectangular. The exognath extends to the distal angle of the 

 endognath and is not quite half as wide as long ; the ischium of the en- 

 dognath is two-thirds as wide as long, with the inner margin rounded ; 

 the merus is squarish, but has the inner distal angle truncate 'and the 

 remainder of the distal margin a little oblique ; the three-jointed palp 

 is very thick and has numerous brushes of long setae. 

 References : Cancerc cymodoce Herbst, Naturg. Krabben und Krebse, 



Bd. Ill, pt. II, p. 22, pi. 51, fig. 5, 1798. 

 Trapezia cymodoce Savigny and Audouin, Descript. de I'Egypte, 

 Crust., t. 23, p. 265, pi. 5, fig. 2, 1827.— Miers, Ann. and Mag. Nat. 

 Hist. ser. 5, vol. II, pp. 408-409, 1878.— de Man, Notes Leyden 

 Mus. vol. II, p. 177, 178, 1880 ; Journ. Linn. Soc. London, Zool., 

 vol. 22, p. 69, 1887-88. — Ortmann, Zool. Jahrb. Syst. t. X, pp. 

 203, 204, 1897.— Alcock, Journ. Asiatic Soc Bengal, vol. 67, pt. 

 2, p. 219, 1898.— NoBiLi, Ann. Mus. Genova, ser. 2, vol. 20, p. 260, 

 1899-1901. — Calman, Trans. Linn. Soc. London Zool., ser. 2, vol. 

 8, p. 20, 1900-1903. — Borradaile, Proc. Zool. Soc. London, 1900, 

 pt. 2, p. 591 ; Fauna and Geogr. Laccadive and Maldive Arch., vol. 

 I, pt. Ill, p. 264, 1902.— Lenz, Ahb. Senckenb. Naturf. Ges. Bd. 



