170 ZOOLOGISCHE MEDEDEELINGEN — DEEL IV. 



the margins of the propodites are beset with some very short hairs near 

 the distal end of the joint; the dactyli are somewhat curved, short, with 

 horny, acute tips, and quite hairless. 

 Dimensions : 



Length of carapace 18.5 mm. 



Maximum breadth of carapace . 22.25 „ 



Breadth of anterior margin of front 8. — „ 



Breadth of posterior margin of carapace . . . 9. — „ 

 Horizontal length of palm and immobile finger . 9.5 „ 



Height of palm 5.5 „ 



Length of penultimate pair of legs 26. — „ 



Besides at the "localities already mentioned (Ovalau Island and Manado), 

 this species has been observed in fresh water at Flores (de Man, M. Weber's 

 Erg. Reise niederlând. Ost-Indien, Bd 2, 1892, p. 317). 



2. Pyxidognaihus subglobosus n. sp. (PL XI, Fig. 1). 



In many respects this species resembles the type species of the genus: 

 the carapace is much vaulted in both directions (f. lc), the maximum 

 breadth (between the tips of the posterior lateral teeth) is only slightly 

 more than the length of the carapace, so that the latter is subquadrate, 

 and the walking legs are short, slightly longer than the breadth of the 

 carapace, and nearly hairless. There are, however, notable differences in 

 the granulation of the carapace and in that of the chelipeds, as well as 

 in the relative thickness of the ischium and the exognath of the external 

 maxillipeds. 



On careful comparison of the two species in front view the new species 

 proves to be less strongly vaulted transversely, and the longitudinal con- 

 vexity is likewise less. The postfrontal lobes are very little prominent; 

 the median ones are narrow, separated by a broad, shallow groove, the 

 lateral lobes are situated much farther back, directed obliquely, and defined 

 only at the anterior margin. The various grooves on the carapace are 

 found here in the same way as in P. granulosus, but they are less 

 deeply cut; the cervical groove, and the grooves parting from its ends 

 are the most distinct, hepatic and branchial regions are separated by a 

 groove, that shows three shallow pits; the protogastric region is scarcely 

 separated from the hepatic area. , 



The external orbital angle is less prominent than in P. granulosus, its 

 lateral margin is straight, and longer than that of the first epi- 

 branchial tooth, whereas in the foregoing species these margins are 

 equally long; both the epibranchial teeth are obtuse, not acute; behind 

 the posterior teeth the margins are considerably converging towards the 



