( 4o ) 



111. The dactylus of the 3rd pair of thoracic legs is decidedly shorter 

 than the propodite, which on the left side has its outer 

 surface remarkably flattened and the upper border of 

 that surface very sharply defined : — 



A. Carapace not abnormally elongate : chelipeds and legs 



not remarkably setose: — 



i. Eyestalks as long as the anterior border of the 



carapace or as the antennular peduncles ... C. cequahilis. 



ii. Eyestalks shorter than the anterior border of the 



carapace or than the antennular peduncles ... C. liuDiilis. 



B. Carapace remarkably elongate ; chelipeds and legs thickly 



and coarsely hirsute, especially the flattened outer sur- 

 face of the propodite of the 3rd left thoracic leg ... C. coralhnus. 



According to Heller and Nobili (see Table in the Appendix), C. lougilarsu^ De Haan, 

 is found at the Nicobars and at Pondicherry. This species is very closely related to 

 C. pndnvensis. 



I. CLiBANAFtius cLiBANAKius, Herbst, Plate IV., fig, I. 



Cancer cUbanarius, Herbst, Krabben, II. i , 1791, p. 20, pi. xxiii., fig. 1. 



Pagurus cUbanarius, Bosc, Hist. Nat. Crust.. 1!.. 1802, p. 75: Latreille, Hist. Nat. Crust. 

 \l., 1803, p. 167: Olivier, Encycl. Method. VIII., 1811, p. 647: Milne Edwards, Ann. Sci. Nat. 

 Zool.(2) VI., 1836, p 276, and (3) X., 1848, p. 62: and Hist. Nat. Crust. II., 1837, p. 227: 

 Krauss, Sudafr. Crust., 1843, p. 56. 



CUbanarius clibanaWui, Hilgendorf, MB. k. Akad Berlin, 1878, p. 820 : Henderson, Tr. 

 Linn. Soc, Zool., (2) V., 1893, p. 423 :"Mary Rathbun, P. U. S. Nat. Mus., 1900, p. 306. 



CUbanarius vulgaris, Dana, U. S. Expl, Exp., Crust., pt. I , p. 462: Stimpson, Proc. Acad. 

 Nat. Sci. Philad., 1858, p. 247: Miers, Ann. Mag. Nat. Hist. (5) V., 1880, p. 375 : Ozorio, Jorn. •^''* -y 



Acad. Lisb. XI., 1887, p. 228: "Walker, Journ. Linn. Soc, Zool., XX., 1887, p. 112; de Man, 

 Notes Leyden Mus, XII., 1890, p. 112 {nee syn.) :' Thallwitz, Abh. Zool. Mus. Dresden, '.ct«, i.'''..,'i, 



1890-91, No. 3. p. 33 



Carapace with scattered tufts of long yellow bristles, which are most 

 numerous near the lateral borders ; its greatest breadth about three-fourths 

 its length in the middle line. Rostrum small, hardly reaching to the base 

 of the ophthalmic scaie^, and hardly projecting beyond the antennal angles 

 of the carapace. 



Eyestalks long and slender, as long as the anterior border of the cara- 

 pace or as the antennal peduncle, but reaching little more than half-way along 

 the terminal joint of the antennular peduncle : they as well as the antennular 

 and antennal peduncles are beset with tufts of long yellow bristles : ophthalmic 

 scales with the free edge spinose and setose, approximated. 



Antennal acicle setose and spinose, overlapping the base of the terminal 

 joint of the peduncle : flagellum longer than the carapace. 



