229 



Measurements. — The type was not measured before disarticulation, but the 

 largest one on the stone is 15^X11 mm., the next in size 15X9 mm., so probably 

 the first-named is a little widened by crushing. 



Habitat. — All the specimens are from Misima, Papua. 



Remarks. — Although in outward appearance this species reminds one of 

 H. resplendens, the sculpture being granulose instead of pitted, the more 

 ribbed character of the end valves and the lateral areas, and the special scale 

 features, easily separate it. It is separated from H. lentiginosus, to which 

 species it is more nearly allied, by its much more regular granulose sculpture, 

 different scale features, and absence of blue dots and its lack of carination, this 

 last feature also separating it from all the races of smaragdimis. 



In conclusion. — There is every probability that this Haploplax also occurs 

 in North Queensland, and it is more than likely that the specimens collected at 

 Port Molle, in that State, by Coppinger, and described by E. A. Smith (Zool., 

 H.M.S. Alert, p. 79, 1884) as conspecific with C. adelaidensis of Reeve, are 

 really this species, for his description well fits them. There is also just a 

 possibility that Reeve's C. adelaidensis may have come from one of these 

 northern localities, and, after all, not be conspecific with H. lentiginosus, to 

 which species Mr. Iredale and the writer referred it in their examination of the 

 type in the British Museum, with aid of pocket lens only. 



For description of Plates see pp. 242 and 243. 



