8 RECORDS OF THE AUSTRALIAN MUSEUM. 



Family CALAPPiD^:. 

 Genus PAKAt'VCl.ois, .V/'/>-. 



PaRACYCLOIS (iKANPlSPlNlS, sji. nor. 



(Plate ii, Hy-. 8 ; V'\g. 1). 



Carapace convex, broadest at a |)()iiit a little in advance (jf 

 tlie middle of the leng-tli. Its dorsal surface is everywhere 

 Hnelv ••raunlai', and i-endered uneven by the })i-esence of iinmei- 

 ons sniuoth and low tubercles, which ai-e laro-est m the middle, 

 and decrease in size as they ajtpi'oach the niai-^-ins : iheyai-e 

 smallest on the hinder part of the branchial re<iit)ns. The 

 c-rooves defining tlie cardiac and intestinal i egions are broad and 

 deeply impressed. Front divided into three j)arts, the median 

 one being pyramidal and turned slightly upward; the two 

 outer lobes are on a higher plane, and separated fi-om the orbital 

 maro-iu bv a furrow. Oi'bits directed obliquely upwards, their 

 margins a little sinuous, finely granuhii, and each has a very 

 indefinite indication of a median suture above. Fye-jieduncles 

 short, thick, and granular. 







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Fig. 1. 



Lateral margins eveidy curved, extending forwaid to below 

 the centres of the orbits; they are studded with a low of small 

 tubercles, which gradually enlarge on the postero-lateral por- 

 tions, and merge into the five large teeth with which these parts 

 are armed ; of these the penultimate one is much bigger than 

 the others, and the last is about the same size as the second. 

 Postei-ior margin wanting. Sub-lie])atic region granular like 

 the carapace, defined below by a row of tubercles similar to 

 those of the antero-lateral margins. Pterygostomian regions 

 sniuutli. 



