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cardiac region. Similar tubercles occur also between the posterior tooth and the cervical groove 

 and on either side of them th(> gastric region carries some similar prominences. The transverse 

 intestinal region and the posterior border of the carapace, which is separated from it by a deep 

 groove, are covered with similar sciuamiform prominences. The carina, running from either 

 inner-orbital angle backward and outward, is armed at the distal end with a sharp tooth and 

 with a somewhat larger one immediately behind it, both at the inner angle of the orbits; a 

 little farther backward one observes a third acute tooth and a transverse line, uniting these 

 two teeth, ajjpears, in the midtUe line, twice as far distant from the cervical groove as from 

 the posterior median tooth, lichind tin; third tooth the lateral carinae carry squamiform pro- 

 minences until the posterior margin. A longitudinal row of small prominences is observed in 

 the t'urrow between the median regions of the carapace and the lateral carinae. For the rest 

 that part of the carapace which is bounded bv the lateral carinae, is smooth. 



The anterior margin of the antennular somite which is about twice as broad as long, is 

 distinctly notched in the middle and also near the outer angles that are dentiform and obtuse ; 

 a transverse arcuate furrow runs, like in other species, near the anterior margin of the carapace, 

 parallel with it, on each half of this somite, while the postero-e.Kternal angles are somewhat 

 dentiform. 



The large circular orbits are situated close to the lateral border of the carapace, their 

 diameter is about twice as large as their distance from the lateral border; a small acute 

 tooth at the outer angle of the orbits. 



Antero-lateral angles of the carapace acute, prominent, reaching somewhat beyond the 

 level of the antennular somite; the lateral margins that distinctly converge backward, are armed 

 with two acute teeth, a hepatic tooth immediately behind the orbits and a branchial tooth, tiiat 

 is situated just behind the level of the third tooth of the lateral carinae. Posterior to the 

 branchial tooth the lateral margins carry squamiform tubercles; between the lateral margin and 

 the lateral carina the carapace is smooth, e.\cept .some squamiform tubercles po.steriorly and 

 near the lateral carinae and exce[)t a small group near the hepatic tooth. The majority of these 

 squamiform tubercles are fringed with short hairs. It may be still remarked that the upper 

 border of the posterior median tooth, i. e. the upper surface of the gastric region, appears 

 almost in a horizontal line with the cardiac region, when the carapace is looked at laterally, 

 and that the ])osterior margin of the carapace is notched in the middle line. 



The aI)domen cannot be said to be carinate in the middle, though the mid-dorsal line 

 on tlie 2'"' and 3''^ terga and on the anterior half of the 4"' is rather conspicuous. The 2'"', 

 the 3''^' and the 4"' pleura terminate in an acute point, that is somewhat directed backward; 

 the 3''^ ends in an obtuse point, like also the 6'''. The squamiform sculpture on the abdominal 

 terga and |)leura resembles closely that of Scy//. }fa?'fcnsii Pfeftcr, as regards the form and 

 arrangement of the tubercles or ]M-ominences, but they are more numerous in BKRTHt)i.i)'s 

 species and the principal transverse groove, that separates the two sets of prominences from 

 one another and that is interrupted in the middle line, appears somewhat narrower in Scy//. 

 Haanii. On the 2"' — 5"' terga the ])rominenccs form an arborescent figure in the middle line. 

 The anterior part of the tclson terminates posteriorly in four acute spinules, one at tlie entl 



