43G yili. G. :S[. THOMSON OX THE NEW ZEALAND 



Tribe P O L Y C A R P I D E A. 



Family PROCESSID.E. 

 Genus 1. Glyphocrangon, A. Milne-Edwards, 188i. 



1. GlAPlIOCRANGON REGALIS, Bate. 



1888. Bate, ' Challciiger' Macrura, p. 517, pi. 93. tigs. 3 & 4. 



Habitat. North of the Kermadec Islauds, 600 fathoms. 



Distribniion. Off Eiji and Banda Islauds, at de^jths of 200 and 315 fathoms. 



Eamily ALPHEID.E. 



Genus 1. Alpheus, Fabricius, 1798. 



1. Alphei's socialis (Heller). (Plate 27. figs. 0-12.) 



1865. Heller, Voy. ' Novaj-a,' Crust, p. 106, pi. 10. fig. 1. 

 1876. Miers, Cat. N.Z. Crust, p. 8.2. 



The carapace is produced into a very short acute rostrum, the lower margin of which 

 is straight ; over each orbit it is produced into a rounded lobe which ends in a minute 

 spine ; the posterior margin is straight on the dorsal portion, but on the sides is slightly 

 produced backwards; in length it is barely one-third as long as the body. 



The tirst antennae have the basal scale about as long as the first joint of the peduncle ; 

 it is broad and flat above, and the basal portion of its outer margin is finely serrated ; 

 the second joint of the peduncle is twice as long as the first. The outer fiagellum 

 is stouter than, but less than half the length of, the iimcr (which is about two-thirds as 

 long as the animal), and tends to divide into two at the apex. 



The second antennae have the basal scale reaching to the extremity of the peduncle of 

 th(,^ first pair; the basal spine is about half as long and very acute ; the flagellum nearly 

 as long as the body. 



The first pereiopoda are very unequal, the left being the largest ia all my specimens. 

 In the largest specimens the propodos of the left limb has the upper and lower margins 

 nearly parallel, the upper having a narrow groove or channel, "while the lower is 

 transversely rugose ; the dactylos is strongly ciu'ved and bent outwardly, while on the 

 inner side it is furnished witli a stout blunt tooth. In smaller ovigerous specimens tlu; 

 dactylos is rounded and less claw-like, as if it had lost its chelate function (fig. 9). At 

 the hinge of the dactylos and propodos the opposing surfaces are flat and circular. In 

 the right limb the dactylos is about half as long as the propodos, is Avell developed, and 

 slightly curved ; the inner faces of the claw are densely fringed with hairs. 



The second pereiopoda are considerably longer than the succeeding pair. The three 



