172 SUBANTARCTIC ISLANDS OP NEW ZEALAND. [Spiders and OpUioneS. 



The measurements (in millimetres) are as follows : Cephalothorax, 2j mm. long, 

 2 mm. broad ; abdomen, 3 mm. long ; mandibles, 2^ mm. long. 



Tr. and Pat. and Met. and 



Fem. Tib. Tars. 



4 5 6 = 16j 



3J 4 4J = 13 



3 3 3-10 



3i 3J 4i = 12J 



2i 2J li = 6J 



One male, from the Auckland Islands ; and one non-adult female (?). 



There is no record of the situation in which these were found, but the bottle 

 next in number to them from the same group contains a spider of the same genus 

 {Amnurobioides, Cambr.) as one from the Campbell Islands, found under stones on 

 the sea-shore. The Argyronetn- or Z>esis-shaped mandibles suggest that this also 

 may possibly be a marine spider. 



Genus Myro, Cambr. 



Myrn, O. P. Cambridge, Proc. Zool. Soc. Lond., 1876, p. 263 ; E. Simon, Hist. 

 Nat. des Ar., vol. ii, pp. 245-46. 



Myro hamiltoni, sp. nov. (Plate VIII, figs. 5a, 56.) 



The cephalothorax, mandibles, lip, maxillae, sternum, legs, and palpi a uniform 

 bright yellow-brown. Abdomen yellow-grey above ; 2 dark-brown spots about the 

 middle ; from the inner side of these spots 2 thin lines reach to the posterior end, 

 and 2 dark spots on the outside of these lines ; front part irregularly mottled. The 

 underside is a dingy yellow-grey. 



The cephalic part of the cephalothorax is rather elevated. 



The rear row of eyes are so strongly procurved as to make two lines ; all 4 

 eyes in wide black rings. They are equal in size, the median pair being about 1^ 

 their diameter apart. The laterals are only twice the same diameter apart, and 

 the distance of their diameter below the median. The front laterals are oval, rather 

 more than their long diameter apart, and half that distance from the rear side 

 eyes, the minute median eyes being just above their inside edges. The clypeus is 

 about half the long diameter of the front laterals. 



The mandibles are kneed at the base, and conical; the fangs slight and weak, 

 and the margin obliquely sloping. On the inner side of the falx-sheath are 2 large 

 and 1 smaller teeth ; on the outer side, rather long incurved bristles. 



The lif is as long as broad, slightly rounded in front. 



The legs are fine, the tarsal and metatarsal joints quite tapering. The tibiae 

 and metatarsi are furnished with long stout spines. The superior claws have about 

 5 small pectinations, the inferior being apparently smooth ; the 1st and 2nd pairs 

 are equal in length. 



The pnlfi have the tibial joint longer than the patellar. 



The abdomen is ovate, straight in front. There are 6 2-jointed spinnerets, the 

 inferior pair being largest and close together ; the 2nd joint is nearly hemispherical. 

 There is a colulus. 



