PODOPHTHALMOUS CRUSTACEA. 03 



We have received the Parat. tridentata M. Edw. from 

 Java, Timor, the Bavian-Islands , the Solor-Islands and, 

 when the label speaks truth, also from the Cape of 

 Good Hope. All these specimens resemble each other com- 

 pletely except those of the Bavian-Islands , where the two 

 epibranchial teeth are more faintly marked. 



A fine female of the Solor-Islands measures: 



Breadth of the carapace 70 m. m. 

 Length » 52 m. m. 



The largest specimen, a male, of the Bavian-Islands measures : 



Breadth of the carapace 58 m. m. 

 Length » 42 m. m. 



One of the specimens from Java, a female, measures: 



Breadth of the carapace 37 m. m. 

 Length » 29 m. m. 



10. Paratelphusa convexa de Haan. 



Antero-lateral margins of the convex carapace armed with 

 two epibranchial teeth , the latter of which passes backwards 

 and inwards on to the carapace with a distinct keel. The 

 post-frontal crest ends before the middle of the base of 

 the anterior epibranchial tooth. The imaginary line that 

 unites the two last epibranchial teeth, is situated almost 

 in the middle between the postfrontal crest and the trans- 

 verse furrow on the middle of the carapace. The subor- 

 bital margin passing with a more or less obtuse angle to 

 the extra-orbital tooth. The meropodal joints of all the 

 legs armed with a sharp spine. 



This species has a physiognomy greatly differing from 

 Paratelphusa tridentata M. Edw., with which is appears 

 to have been confounded by Heller, von Martens and 

 Wood- Mason. ^) Its carapace is more convex, the antero- 



1) Wood-Mason, Consiiectus of the species of Paratelphusa, in Magazine of 

 Natural History, XVII, 1876, p. 121. 



Notes from the Leyden Museum. 



