304 Mr. E. J. Miers on Malaysian Crustacea. 



smaller ; but the differences are scarcely sufficient to necessi- 

 tate the bestowal of a separate specific name. 



EXPLANATION OF PLATE XVI. 



Fig. 1. Paratymolus biUiberculatus, magnified about 4 diameters. 

 Fig. 2. First pair of legs of the same, magnified 7 diameters. 

 Fig. 3. ParatAjmolns latipes, magnified 4 diameters. 

 Fig. 4. Abdomen of tbe same. 



Fig. 5. Under yiew of tbe anteiior portion of tbe body of tbe same, mag- 

 nified 8 diameters. 



XXX. — On a Collection of Crustacea from the Malaysian 

 Region. — Part II. Telphusidea, Catometopa, aud Oxysto- 

 mata. By Edward J. Miers, F.L.S., F.Z.S. 



[Plate XIV.] 



[Continued from p. 239.] 



Telphusidea. 



Telphusa Larnaudii, A. M.-Edwards. 



Indo-Malayan seas. A male is in the collection without 

 special indication of locality. Both this form and T. denticu- 

 lata are so nearly allied to T. fluviatilis that I think it is pro- 

 bable that the examination of a sufficiently large series of 

 specimens would show their identity. 



Telpliusa sumatrensis, sp. n. 

 (PI. XIV. figs. 1,2). 



Carapace broader than long, rather convex in its anterior 

 portion, and nearly smooth. Front more than one third the 

 greatest width of the carapace, with the anterior margin 

 straight ; its upper surface is punctulated, but not granulated 

 or rugose. Some faintly indicated rugosities are visible on 

 the carapace toward the epibranchial tooth, which is very 

 small — scarcely distinguishable from the granulated line which 

 defines the antero-lateral margins. The postfrontal crest is 

 nearly obsolete, but, although scarcely distinguishable, is 

 interrupted and divided into two median and two lateral 

 portions, nearly as in T. Larnaudii. The chelipedes are 

 smooth, not granulated or rugose, but slightly punctulated ; 

 the carpus is armed with two spines on its inner margin, of 

 which the anterior is the largest ; the fingers of the larger 

 hand (in the male) are slightly arcuated, leaving an hiatus 



