Thomson. — On Neio Zealand Crustacea. 267 



pound, very large, prominent, situated in oval cavities ; ocelli 

 about 150, disposed in four or five rows. Clypeus nearly per- 

 pendiciilar, not lobed on the sides. Epistonie forming a con- 

 tinuous frontal marginal line. Epimera of the front segments 

 of the thorax with their posterior portions entire. Anal seg- 

 ment of the tail very short, broadly subtriangular. Exterior 

 ramus of all the pairs of caudal feet furnished with tracheas. 



" Cyllonia ocnlat/nn, Budde-Lund. 



'•■ Oblong oval, nearly smooth. Epistome with a triangular 

 tubercle below the middle, with its superior margin reaching 

 very much beyond the middle and somewhat reflexed. Vertex 

 between the eyes obliquely 2-wrinkled. 



" First thoracic segment with its anterior margin roundedly 

 produced in the middle, curved ; its posterior margin distinctly 

 sinuate on both sides ; lateral margins thickened (sub-alte- 

 cinctis'?), entire behind ; posterior angles produced backwards. 

 Third and fifth abdominal segments with large epimera, greatly 

 produced backwards ; epimera of the fifth segment suboval, 

 somewhat convergent. Caudal feet greatly exceeding the 

 anal segment ; basal joint subtetragonal, its exterior portion 

 toothed, shorter than the penultimate segment ; external 

 terminal ramus inserted on the inner portion of the basal joint, 

 and slightly exceeding the epimera of the penultimate joint. 



'• Colour uniform, brown ('?). 



" Length, about 10mm. ; breadth, 4mm. ; height, 2-5mm. 



" Habitat. New Zealand. Described from one very 

 imperfect specimen preserved in Cambridge Museum, Mass. 

 (U.S.A.)." 



In the absence of figures, the descriptions of these two 

 species, neither of which is known to New Zealand natural- 

 ists, and which are confessedly based on single imperfect 

 specimens, are somewhat unsatisfactory. 



DESCRIPTION OF PLATES XIII. AND XIV. 

 Plate XIII. 



Fig. 1. Hippolytc stcwarti ; rostrum .. .. .. .. x 6 



Fig. 2. Tube covered with corallines, in which a specimen of Co- 



rophium contractum was found . . . . . . x 9 



Fig. 3. Allorchestes neo-scalanica ; gnathopod of the 2nd pair, 



showing the scoop-like prolongation of tlie carpus . . x 18 



Fig. 4. TalorcJiestia tumida, ?; gnathopod of 1st pair .. x 26 



Fig. 5. „ „ 2nd pair . . x 26 

 Fig. 6. „ „ 2nd pair ; terminal 



joints of the same . . . . . . . . . . x 56 



Fig. 7. TalorcJiestia tiimida, ? ; ultimate pair of uropoda . . x 26 



Fig. 8. „ telson . . . . . . x 26 



