CARCINOLOGICAL STUDIES. 85 



belong to a different species and I think they belong to 

 Leptogr. Ansoni H. Milne Edw., which inhabits the island of 

 Juan Fernandez. For the rest our specimens seem to agree 

 fully with Leptogr. variegatus. I cannot say whether the 

 hands are less tuberculate or not, because the male indi- 

 vidual is a young one and the other a female. 



Leptogr. planifrons Dana is also distinct, as I suppose, 

 the cephalothorax appearing on the figure of this species 

 (Dana, PI. XXI, fig. 3) even still slightly narrower ante- 

 riorly than in the type specimen of variegatus and the 

 ambulatory legs appear much less slender than in our 

 Valparaiso specimens. This species, however, may prove to 

 be identical with I^eptogr. Gayi M, Edw., or perhaps 

 with Leptogr. variegatus, which is recorded by Miers from 

 Valparaiso. (Miers, Report on the Brachyura of the Chal- 

 lenger Expedition , p. 257). 



N°. 1. N°. 2. N°. 3. 



Dimensions: (ƒ 9 cT 



Greatest width of the cepha- 

 lothorax 33 mm. 44^3 mm. 44^/3 mm. 



Distance between the exter- 

 nal orbital angles . 



Breadth of the front, imme- 

 diately before the external 

 postfrontal lobes . 



Length of the cephalothorax 



Length of the meropodites of 

 the antepenultimate pair 



Breadth of the meropodites 



of the antepenultimate pair 9^/4 » 11 '/g » I3V4 » 



N°. 1 and N°. 2 are the two specimens oi Leptogr. Ansoni 

 M. Edw. , N°. 3 the Paris specimen of Leptogr. variegatus 

 (Fabr.) M. Edw. 



Notes from the Leyden M^useum , Vol. XII. 



