360 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 

 Measurements in millimetera. 



[le] 



Station 



Sex 



Length from front of carapax to tip of telson 



Length of earaj)ax aloii':; median lino 



Breadth of caiapax l.etwceu .spiuos of anterior angles 



Greatest breadth, including spines 



Length of lij st poriEOpod 



Length of nieras 



Lengt h of carpus 



Lengt U of chela 



Lengt h of dactylus 



Length of second peraeopod 



Length of nicriis 



Length of carpus 



Length of inopodus 



Length of dactylus 



Length of tifth peraiopod 



Length of propodus .■■. . 



Length of dactylus 



Length of pleori 



Greatest breadth at second somite 



Greatest breadth at sixth bomite 



Length of telson 



Breath of telson 



P. scnlp 

 tas. 



2115 



54.0 



23.2 



11.1 



16.0 



61.0 



19.0 



11.4 



20.0 



12.0 



20.0 



5.3 



3.2 



7.5 



3.3 



12.0 



3.2 



0.9 



30.0 



12.6 



6.8 



10.0 



4.6 



Specimens examined. 



Pentacheles debilis, sp. nov. 



This is represented by two immature males only, but it is apparently 

 so different from either of the foregoing species or any of those described 

 by Bate or Milne-Edwards, that I venture to describe it. Of the de- 

 scribed species it is probably most nearly allied to P. validus A. M.- 

 Edwards. 



The dorsal surface of the carapax is much flatter than in P. sculptiis 

 or P. nanus, broader posteriorly, the greatest breadth being a little back 

 of the middle branchial regions, and the subhiteral carinre of the branch- 

 ial regions are indistinct or wanting. The orbital sinuses are deep, 

 very much narrowed posteriorly, and the inner angles project forward 

 in a spine-tipped angle far in advance of the rostrum. Including the 



