1900.] FROM THE SOUTH PACIFIC. 577 



Under the circumstances it is perhaps best to retain the whole 

 of Ortmann's subfamilies with the addition of two, or three, others 

 — the Caphyrince for the genera Caphyra Guerin 1832, and 

 Sphcerocarcinus Zehnter 1894 ; a new subfamily Goniocaphynnod, 

 for the single genus Goniocaphyra de Man 1837 ; and the Carei- 

 nidince, if it be thought needful to retain this group in the 

 Portunidae. 



The following key embodies the leading characters of the sub- 

 families as it is here proposed to limit them : — 



I. Eyestalks and orbits normal. 



A. Basal joint of 2nd or outer antenna narrow. [Flagellum of 2nd 



antenna not shut out from orbit.] 

 i. Inner antenna? sloping. Front with a median tooth. Generally 

 at least one pair of walking-legs as long as chelipeds. 



1. Last pair of legs not distinctly natatorial CarcinidincB. 



2. Last pair of legs distinctly natatorial Portumnince. 



ii. Inner antennae transverse. Front with a median notch. 



Chelipeds longer than walking-legs. 



1 . 5th dactyles lanceolate Goniocaphyrince. 



2. 5th dactyles rounded Carwpinm. 



B. Basal joint of antenna broad. [Chelipeds larger than walking-legs.] 

 i. Flagellum of 2nd antenna not shut out from the orbit by a 



process of the basal joint Portuninm. 



ii. Flagellum of 2nd antenna shut out from the orbit by a 

 process of the basal joint. [5th legs natatorial.] 



1. Last joint of 5th legs sickle-shaped Caphyrince. 



2. Last joint of 5th legs flattened Thalamitina . 



II. Eyestalks enormously long, orbits extend across the whole fore 



edge of the carapace. [5th legs natatory. Chelipeds longer than 

 legs. Antennae free ; basal joint short ; flagellum not shut out 

 from orbit.] Podophthalminw. 



Subfamily Goniocaphyrinje. 



Characters of Goniocaphyriiun, n. subfam. : — 



1. Carapace broad. 



2. Antero-Iateral edge with 5 teeth. 



3. Front truncate, slightly notched in the middle. 



4. Legs slender ; chelipeds somewhat longer than walking- 

 legs. 



5. Last pair of legs with lanceolate dactyles. 



6. Basal joint of antenna enters the orbital gap but does not 

 wholly fill it. Flagellum not shut out from orbit by a process of 

 the basal joint. 



7. Antennules transverse. 



Genus Goniocaphyra de Man, 1887. 



14. Goniocaphyra truncatifrons de Man, 1887. 



Goniocaphyra truncatifrons, de Man, Arch. IS'aturg. liii. 1, iii. 

 p. 339, pi. xiv. fig. 1 (1887). 

 Funafuti ; one male. 



