142 A. Alcock — Carcinological Fauna of India. [No. 2, 



1. Calappa fornicata, Fabr. 



Cancer calappoides, Rumph, Amboinsche Rariteitkamer I. 21, pi. xi. figs. 2, 3. 



Cancer heracleoticus, Seba, Thesaurus III. 51, pi. xx. figs. 7, 8. 



Cancer calappa, Linn., Mus. Lud. Ulr. p. 449, and Syst. Nat., 12th ed. I. ii. 1048 : 

 Herbst, Krabben I. ii. 196, pi. xii. figs. 73, 74 : Fabricius, Ent. Syst. II. 454. 



Calappa fornicata, Fabricius, Ent. Syst. Suppl. p. 345 : Bosc, Hist. Nat. Crust. 

 I. 183 (nee pi. iii. fig. 3) : Latreille, Hist. Nat. Crust, et. Ins. V. 394 : Desmarest, 

 Consid. Gen. Crust, p. 109 : Milne-Edwards, Hist. Nat. Crust., II. 106 : 

 Dana, U. S. Expl. Exped., Crust, pt. I. p. 394, pi. xxv. fig. 1 : A. Milne-Edwards, 

 Nouv. Archiv. du Mus. IV. 1868, p. 72, and X. 1874, p. 56: Hilgendorf in Von 

 Der Decken's Reisen in Ost.-Afr. III. i. p. 92 : Brito Capello, Jorn. Sci. Lisboa, 

 III. 1870-71, p. 133, pi. ii. fig. 5 : E. Nauck, Zeits. Wiss. Zool. xxxiv. 1880, p. 46 

 (gastric teeth) : A. Ortmann, Zool. Jahrbucher, Syst. etc. VI. 1892, p. 569. 



Carapace in length less than half the extreme breadth ; its surface 

 nearly smooth anteriorly, marked with transverse wavy beaded lines 

 posteriorly ; its antero-lateral borders crenulated. 



Clypeiform expansions very large, their breadth (transverse 

 measurement) equal to their length (oblique antero-posterior measure- 

 ment); their edge smoothly moulded, and in unbroken continuity with 

 the smoothly moulded posterior border of the carapace. Outer part of 

 the pterygostomian regions densely hairy. 



Front slightly projecting beyond the level of the orbits, bilobed, 

 its breadth at the tip rather less than the breadth of the orbit. 



Endostomial septum extending vertically from the level of the front 

 to the level of the mouth ; its anterior border strongly convex and pro- 

 jecting. 



Transverse wing-like expansion near the distal end of the arm 

 with its edge smooth and entire. 



Outer surface of palm with squamiform tubercles and transverse 

 wavy beaded ridges : upper margin, or crest, of palm bluntly dentate. . 



Three specimens, including a male and ovigerous female of remark- 

 able size, are in the Museum collection, from the Andamans. 

 The eggs are singularly minute. 



2. Calappa hepatica (Linn.) 



Cancer hepaticus, Linn., Mus. Lud. Ulr., p. 448, and Syst. Nat. ed. xii. I. ii. 1048. 



Calappa hepatica, De Haan, Faun. Japon. Crust., p. 70 : Miers, Cat. Crust. New 

 Zealand, p. 55, and Phil. Trans. Roy Soc. Vol. 168, 1879, p. 491, and Zoology 

 H. M. S. 'Alert' pp. 185, 257, 518, 550, and 'Challenger' Brachyura, p. 285: 

 Haswell, Cat. Austral. Crust., p. 136 : Filhol, Crust. Nouvelle Zelande, p. 406 : 

 [Cano, Boll. Soc. Nat. Napoli, III. 1889, p. 249] : A. Ortmann, Zool. Jahrbuch., Syst. 

 etc., VI. 1892, p. 568 : J. R. Henderson, Trans. Linn. Soc, Zool. (2) V. 1893, p. 395. 



Cancer tuberculatus, Herbst. Krabben, I. ii. 204, pi. xiii. fig. 78: Fabricius, Ent. 

 Syst. II. 454. 



