M A I I D E A. 141 



Eurynolambrus australis {Edwards and Lucas). 



Plate 6, ftg. 9a, animal (male), natural size; b, front view, enlarged 

 two diameters; c, profile of a longitudinal medial section; A, the front 

 extremity. 



Bay of Islands, New Zealand. 



The features of a human face are quite strongly marked on the 

 carapax of this species, although in but faint relief. The form is 

 broad triangular, with the lateral margin rounded but somewhat 

 polygonal, and the general outline anteriorly, is approximately semi- 

 circular. Where the polygonal margin terminates anteriorly, oppo- 

 site the middle of the stomach region, there is a short fissure in the 

 margin. The surface through its greater part is nearly horizontal : 

 there is a broad shallow depression either side of a low stomach 

 region; another depression posterior to the stomach region, somewhat 

 uneven; and another much larger, upon the alate portion of the cara- 

 pax either side of the cardiac region. In the middle of each of the 

 anterior of these depressions, there is a rounded punctation, and pos- 

 teriorly three others in a curving line, the last two being in the 

 depression posterior to the stomach region ; this curving line traced 

 forward, would terminate in the short marginal fissure above alluded to. 

 The front is declivous, and the anterior part of it quite abruptly so; the 

 posterior part of the carapax is also declivous and slightly concave, and 

 rounds laterally into the sides under the alate portion of the carapax. 

 The frontal margin between the eyes consists of two small, rounded 

 lobes ; and outside of these, there is, on either side, a knob but little 

 smaller, which is the extremity of the basal joint of the outer an- 

 tennas. It is separated from the lobes of the front by a small fissure 

 from which the following joint proceeds. 



The carapax has a minutely uneven or somewhat warty surface 

 (between pitted and minute warty), especially around the frontal 

 parts. Below, the carapax is very tumid either side anterior to the 

 middle of the buccal region, and then follows a deep rounded con- 

 cavity of large size. The surface of the exterior maxillipeds and 

 abdomen is very closely and finely pitted. 



The first joint of the outer antennae is narrow in its apical half, but 



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