58 ■ • I 



antero-external angle, broader than ischium; exognath not j 



concealed. . Tylodiplax de Man ] 



Lateral margins of carapace convex, sometimes toothed. Che- ■ 



lipeds, at least of J, stronger. Merus of external maxilliped ^ 



not auriculate, but regularly arched at outer margin, and ! 

 strongly notched anteriorly for the reception of the carpus; 



exognath concealed in outer view 5 | 



5. Carapace more or less strongly vaulted. Lateral angles of front | 



rounded Cleistostoma de Haan ^/ j 



Carapace flattened. Lateral angles of front produced .... 6 ; 



6. Two obtuse teeth behind external orbital angle; carapace sub- - 



hexagonal, with a prominent transverse ridge across the cardiac . ■; 



rec^ion and running from side to side Camptandrium Stimpson iST - 



Lateral margins of carapace mostly entire or with one tooth, \ 



convex; carapace subcircular or roughly transversely-oval. . Paracleistostoma de Man &^ \ 



Macrophthalmus LatieiUe. 



1829. ]\lacrophthahmts Latreille. Regne an., ed. 2, t. 4, p. 44. 



In a recent paper ^) I have given a synopsis of all the known species of this genus, so 

 that a profound treatment would be useless. 



1. Macrophthalimis telescopicus (Owen). 



Stat. 25S. Kei Islands, i cT juv. 



The following records in the literature had previously been overlooked by me :' 



Macrophthalmus telescopicus Ortmann. Denkschr. med.-naturwiss. Gesellsch. Jena, Bd 8, 1894, 



p. 58 (Thursday Island). 

 Macrophthalmus podophthalnms Lanchester. Proc. Zool. Soc, London, 1900, p. 760 (Singapore). 

 Macrophthalmus telescopicus Rathbun. Bull. U.S. Fish Comm. for 1903, v. 23, prt 3, 1906, 



p. 834 (Honolulu). 



2. Macrophthalmus graeffei A. Milne-Edwards. 



Stat. 47. Bay of Bima, Sumbavva. i 9- 

 Stat. 64. Tanah Djampeah, Flores Sea. i 9- 



This small species which now must be considered distinct from M. convexus Stimpson 

 is represented by two specimens, and one of these has nearly all the legs detached. 



l) Zool. Medcdeel. Mus. Leiden, v. i, 1915, p. 149. I regret to say that, besides some omissions in the full litteratmc upon 

 the subject, 1 had overlooked a subspecies of M. diialalus viz. carciis Lanchester (Proc. Zool. Soc. London, 1900, p. 759, pi. 47, f. 11) 

 from Singapore and Malacca. Shortly after the publication of my paper I became acquainted with M. sandakani Rathbun (Proc. l". S. 

 Nat. Mus., V. 47, 1914, p. 82) from Sandakan (Borneo), allied to M. giaiidi.iieri A. Milne-Edwards. 



