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I. Helice leachi Hess. \ 



1865. Helice leacliii Hess. Arch. Naturgesch., Jahrg. 31, i., p. 153. 



1873. Helice pilimaim A. Milne-Edwards. Nouv. Arch. Mus. Paris, t. 9,' p. 313, pi. iS, f. i. 

 1882. Helice leachi Haswell. Cat. Austral. Crust., p. 107. 



1887. Helice leachi de Man. Zool. Jahrb., Syst., Bd 2, p. 702. : 



1894. Helice leachi Ortmann. Denkschr. med.-naturw. Gesellsch. Jena, Bd 8, p. 57. 

 1907. Helice leacliii Rathbun. Mem. Mus. comp. Zool. Harvard Coll., v. 35, n" 2, p. 36. ^ 



I 

 Stat. 33. Bay of Pidjot, Lombok. i cf juv., in river. 

 Stat. 200. Bay of Bara, north coast of Buru. i cf juv. 



De Man, who examined the type specimen of Hess, proclaimed the identity of H. leachi 

 and //. pilimana. The tuft of hairs in the gap of the fingers renders this species very con- 

 spicuous, and also the hirsute anterior part of the .sternum. On the arm of the cheliped there j 

 rf, is (in the cT at least) a musical crest, situated quite near the distal fourth part of the inner | 



(anterior) margin, as has been ob.served by de Man. Corresponding to the presence of this j 

 crest, the infra-orbital ridge is transformed into an irregular series of tubercles: beginning from 

 the epistome there is firstly a series of small tubercles, gradually increasing in size laterally; \ 

 beneath the outer orbital angle a much larger, elongate tubercle is placed, that laterally is ^ 

 strongly declivous, and is immediately followed by a shomewhat smaller tubercle, the sides of ^ 

 which are strongly and regularly sloping; finally there is a third tubercle, smaller than the , 

 preceding and placed vertically beneath the anterior incision of the carapace. j 



This species has been first recorded from Australia (Sydney) and afterwards from New 1 

 Caledonia, the Carolines and Japan; the finds of the "Siboga" now prove, that H. leachi is | 

 also an inhabitant of the Moluccas and Lombok. Already Ortmann collected the species at j 

 Dar-es-Salaam. ; 



Dimensions in mm. of the larger c? : ' 



Distance between e.xternal orbital angles 9.75 j 



Distance between tips of anterior epibranchial teeth . . 10.5 



Length of carapace 8.75 



Horizontal length of chela 9.5 



Height of palm 6. — 



Breadth of third segment of abdomen 4.75 \ 



Breadth of base 



Length 



of penultimate segment of abdomen 



2. Helice siibguadrata (Dana). PI. 6, Fig. 1. 



185 1. Chasmagnathits subquadratus Dana. Proc. Ac. Nat. Sc. Philadelphia, 185 1, p. 251. 



1852. Chasmagnathiis subquadratus Dana. U.S. E.xpl., Exp., Crust., p. 363, pi. 23, f. 5. 

 1865. Chasmagnathiis subquadratus Hess. Arch. Naturgesch., Jahrg. 31, i., p. 152. 

 1882. Chasviagnathus subquadratus Haswell. Cat. Austral. Crust., p. 106. 



1894. Chasmagnathiis subquadratus Ortmann. Zool. Jahrb., Syst., Bd 7, p. 728. 



Stat. 19. Bay of Labuan Tring, west coast of Lombok. i cT. 

 Dana made known three species of " Chasinagimthus'\ but strictly adhering to the limits 



