192 Transactions. — Zoology. 



1876. Petrocheles spinosus, Miers, Catal. N.Z. Crust., p. 61, 

 pi. i., fig. 5. 

 This well-marked species occurs in many parts of the 

 colony, but apparently has not been met with very abund- 

 antly. Two specimens occur in the Otago Museum — one 

 from Massacre Bay {Cajjtain Hutton), and the other from 

 Portland Island {G. H. Bohson) ; I have received specimens 

 from Waipapapa Point (J". F. Erecson), and from Taylor's 

 Mistake {H. Suter). 



Genus 3. Poeceldana, Lamarck. 



Carapace suborbicular or subovate, the length usually 

 greater than the breadth. Frontal region prominent and 

 dentate, the teeth usually well developed. Eyes of moderate 

 size, the orbits deep. Chelipedes moderately flattened, the 

 carpos short and usually provided with a single projecting 

 lobe near the proximal end of the internal margin ; the digits 

 frequently contorted. Ambulatory limbs with the dactyli 

 short and robust, ending in a single claw. 



Porcellana rupicola, Stimpson. 



A single specimen is recorded, and figured by T. W. Kirk 

 in Trans. N.Z. Inst., vol. xi., p. 396, as taken at Lyall Bay, 

 Wellington. 



Fam. GALATHEID^. 



Carapace elongate, regions well defined and usually rugose ; 

 front produced into a prominent and acute rostrum. Cheli- 

 pedes and ambulatory limbs elongated and frequently slender. 

 Autennules exposed ; antennal peduncle directed forwards. 

 External maxillipedes subpediform, with the ischium and meros 

 narrow, and frequently spinose internally. Abdomen broad 

 and well developed, simply bent or folded on itself, not applied 

 to the underside of the thorax, terminating in a large swim- 

 ming-fan formed of the telson and the appendages of the 

 6th segment ; females with four pairs of simple slender 

 ovigerous appendages on 2nd, 3rd, 4th, and 5th segments 

 (those of the 2nd and 4th sometimes rudimentary) ; males 

 with tw^o pairs of well-developed accessory genital organs 

 on the 1st and 2nd segments (those of the 1st pair sometimes 

 rudimentary or absent), and three pairs of short, usually 

 flattened, appendages on the 3rd, 4th, and 5th segments (all of 

 them sometimes rudimentary). 



Genus 1. Galathea, Fabricius. 

 Rostrum flattened and of moderate breadth. Carapace 

 with pubescent transverse striae ; the gastric region usually 

 with a few spines ; abdomen unarmed. 



