ÜO PODOPHTHA.LMOUS CRUSTACEA. 



elites of the three anterior ambulatory legs and the mero- 

 podites of the posterior legs are somewhat more slender 

 in Gon. sexdentatum Herbst than in the other species. But 

 for the rest these two species resemble each other com- 

 pletely and no other differences exist. 



7. Goniosoma duhium Hoffmann. 

 Hoffmann, Crustaces de Madagascar, p. 11, pi. H. 



The Leyden Museum has also received three younger 

 specimens, two males and one female collected at the island 

 of Timor , of this species which is undoubtedly nearly 

 allied to Gonios. oriëntale Dana. They completely resemble 

 the typical specimens described by Hoffmann and which 

 are natives of Reunion. The first tooth of the antero- 

 lateral margin is as large as the fourth and the fifth and 

 much larger than the second tooth which is rudimentary. It 

 may be observed that one specimen of Timor is provided 

 with eggs, the breadth of its carapace being still only 31 

 m.m. , whereas the typical specimen is much larger. 



8. G oniosoma acuti frons n, sp. 



Nearly allied to Gonios. duhium Hoffm. The carapace 

 somewhat more convex , entirely covered with short small 

 hairs and ornamented with the ordinary smooth and little 

 granulated transverse ridges. Frontal teeth very characte- 

 ristic , eight in number, altogether depressed, triangular, 

 with arched outlines and very sharply pointed ; the four 

 middle teeth are of the same size and their interstices are 

 as large " as the space between the second and the third 

 pair ; the teeth of this third pair are a little larger and are 

 separated from the intraorbital teeth by a somewhat greater 

 space than from the teeth of the second pair. The antero- 

 lateral margins armed with six teeth , the second being 

 extremely rudimentary and scarcely perceptible , still more 

 rudimentary than in Gonios. duhium Hoffm. The first tooth 

 has the same size and shape as the four posterior ones. 



jlN'ote» from the Leyden ]>J!useura< 



