DR WILLEY FROM THE SOUTH SEAS. 423 



lobes each ending in a minute spine, the rest finely serrate, the outer edge with a 

 crest of sharp, curved teeth, the hand broad, with serrated edges, the fingers slightly 

 hooked at the tip, equal, with serrated edges ; the second to fourth pairs of legs with 

 spines on the ujjper edge of the meropodite, dactyies with several small spines under- 

 neath ; none of the legs hairy, save for a ver}' few scattered hairs." 



Length of carapace 4 mm. 



This species belongs to the galanthinus-group of Ortmauu [Zool. Jahrb. X. Syst., 

 p. 276 (1897)]. 



1 (/ from Sandal Bay, Lifu, Loyalty Islands. 



Genus. Pachycheles Stimps., 1858. 



62. Pachycheles scidptus (H. M.-Edw.), 1837. 



Porcellana sculpta, H. M.-Edwards, H. N. Crust, ii. p. 2.53 (1837); Dana, U.S. 

 Espl. Expd. Crust, i. p. 412, PI. XXVI. Fig. 2 (1852); de Man. J. Linn. Soc. Zool. 

 XXII. p. 218 (1888). 



Porcellana pisum, H. M.-Edwards, H. N. Crust, ii. p. 254 (1837); Heller, "Novara" 

 Crust, p. 73 (1868). 



Porcellana pulchella, Haswell, Proc. Liun. Soc. N.S.W. XI. p. 758 (1882); Cat. 

 Austral. Crust, p. 148 (1882). 



Porcellana (Pisosoma) sculpta, de Man, Arch. jSaturg. LIII. p. 413 (1888). 



Pachycheles pidchellus, Miers, "Alert" Report, p. 273, PL XXX. Fig. A (1884); 

 Henderson, "Challenger" Anomura, p. 114 (1888); Ortmann, Semon's " Forschungsreisen 

 in Austral." v. 1, p. 30 (1894). 



Pisosoma sculptum, Ortmann, Zool. Jahrb. VI. S3'st. p. 265 (1892) ; de Man, Zool. 

 Jahrb. IX. Syst. p. 878 (1896). 



Pisosoma jnsum, de Man, Zool. Jahrb. IX. S3-st. p. 380 (1896). 



Pachycheles sculptus, Ortmann, Semon's "Forschungsreisen in Austral." v. 1, p. 29 

 (1894). 



The occurrence in Dr Willey's collection of a form intermediate between the Por- 

 cellana sculpta and P. pisum of Milne-Edwards, leads to the conclusion that these 

 latter are not specifically distinct, and must rank Axith the new form as varieties of 

 one species. The following table sets forth the distinguishing characteristics of these 

 varieties. 



1. Chelipeds subequal, similar, tuberculated. 



A. var. sculjjtus H. M.-Edw., 1837. 



r. Chelipeds unequal, dissimilar, one at least not tuberculated. 



2. The left cheliped is the larger. Right cheliped tuberculated. 



B. var. tuberculatus nov. 



2'. The right cheliped is the larger. Neither cheliped tuberculated. 



C. var. jnsum H. M.-Edw., 1837. 



57—2 



