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 Gaphyrince. for the genera Caphyra Guerin 1832, and 

 Spharocarcinus Zehnter 1894 ; a new subfamily Goniocaphyrince, 

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

 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. [Flagellurn of 2nd 



antenna not shut out from orbit.] 



i. Inner antennas 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 Carcinidints. 



2. Last pair of legs distinctly natatorial Portumnince. 



ii. Inner antenna? transverse. Front with a median notch. 



Chelipeds longer than walking-legs. 



1 . 5th dacty les lanceolate Gonioeaphyrince. 



2. 5th dactyles rounded Carupinm. 



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

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



process of the basal joint Portunina. 



ii. Flagellurn 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 Caphyrina. 



2. Last joint of 5th legs flattened Thalamitinee. 



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



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

 legs. Antennas free ; basal joint short ; flagellurn not shut out 

 from orbit.] Podophthalmiria, 



Subfamily Goniocaphyrinve. 



Characters of Gonioeaphyrince, n. subfam. : — 



1. Carapace broad. 



2. Anterolateral 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. Flagellurn 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. Naturg. liii. 1, iii. 

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

 Funafuti ; one male. 



