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runs in a straight direction down the flank at a length of about 

 9 mm., and then rather suddenly bends forward at the same 

 time getting flatter, by degrees it disappears long before reaching 

 the lateral margin. A little below the point where it bends 

 forward it sends out a short indistinct branch, which slants 

 toward the front and disappears by degrees before it reaches 

 as far down the lateral margin as the head branch. 



In front of the lower part of the cervical furrow, and at 

 about 5,5 mm. distance from the latter, the >^.-formed hepatic 

 furrow is found. It starts from about the same height as the 

 ramification of the cervical furrow, runs first at a right angle 

 to the lateral margin, deepening at the same time ; then it 

 sends forth a branch in front, which gets shallower and shal- 

 lower but yet almost reaches right to the anterior margin; 

 before reaching so far it has sent out a very fine and short 

 branch towards the side margin. After having sent forward 

 the above mentioned branch, the head branch of the hepatic 

 furrow is directed somewhat backwards and is quite short. 



There is a broad incision in the middle line of the posterior 

 margin which in an even curve unites itself with the side margin. 

 A furrow which is specially deep at the flank runs alongside it. 



The length of the rostrum is unknown, it seems to have 

 been slenderly constructed. At the top of the middle line is 

 found a furrow which is continued on to the carapace itself, 

 but here it quickly gets shallower and broader, and at last it 

 quite disappears. This furrow is bordered by two rounded keels, 

 which at the carapace proper, diverge from each other, and at 

 last resolve themselves into two rows ol pointed spines; these 

 two rows later on approach each other, and may be traced 

 almost to the cervical furrow. 



The postorbital ridge ends in front with a little spine, 

 which is now broken off. It quickly decreases in height at the 

 back. Its distance from the above mentioned keel is 2,5 mm. 

 from the orbit 2 mm. The part of the carapace which is 



