39 



appears 0,28 mm. high at base, just one-fifth the length. While the lower margin is smooth 

 and glabrous, the upper is armed with 16 teeth; the first si.\ stand on the carapace, slightly 

 increase in length from the i^' to the 6^^ and are, like the 5 or 6 following, separated by very 

 short interspaces. Excepting the five distal ones, the rostral teeth are apparently all articulated 

 and movable; those above the orbital margin and the eyes are a little larger than the first and 

 the last. The foremost tooth is situated at one-fifth the length of the rostrum from the tip. 



The carapace which is about one and a half as long as high, bears a small supraorbital 

 spine like in Sfyiod. Aiiicxrytitkis^ an antennal and a branchiostegal spine; the antennal spine 

 is a little larger than the two others. The abdomen, that is 6-times as long as the rostrum and 

 4-times as long as the carapace, appears a little more than twice as long as carapace and 

 rostrum taken together. The third tergum, which is 1,32 mm. long, appears distinctly bent 

 in a lateral view and somew^hat prominent posteriorly. The s'** somite, 0,8 mm. long, is as long 

 as the 4'''; the 6''^, 2,04 mm. long, is 2^/3-times as long as the 5"' and, being 0,62 mm. high 

 in the middle, appears a little more than 3-times as long as high. Telson 1,65 or 1,7 mm. 

 long, a little shorter than the 6''' somite and armed at either .side of the acute tip with 3 spines, 

 of which the e.xternal is 0,1 mm. long, the following 0,4 mm., the submedian 0,2 mm.; 5 pairs 

 of dorso-lateral spinules. The outer uropods reach as far backward as the terminal spinules of 

 the telson, the inner are a little shorter. Different from Stylod. Aiiiarytithis, but like in the 

 other species of the genus, the abdominal pleura are unarmed, those of the i''' to 3^'^ are 

 rounded, while the posterior angles of the 4''^ and 5'^ are subacute. 



Measured from the orbital margin the cylindrical eyestalks appear almost half as long 

 as the carapace, while they are half as thick as long; the semiglobular, distinctly faceted corneae 

 measure two-thirds the length of the rest of the stalk, they are of a pale grayish colour, 

 blackish near their posterior margin, especially at the outer side and without ocellus. 



Antennular peduncle little shorter than the carapace, the proportion being like 7 : 9, 

 very slender, 10 to ii-times as long as thick; the basal joint, that is strongly hollowed 

 out above, is more than twice as long as the two following joints combined and the 2'><>, that 

 is a litde longer than thick, appears about one and a half as long as the 3^'^ ; outer fiagellum 

 much broader or thicker at base than the inner and tapering forward, inner fiagellum cylindrical. 

 Stylocerite lamellate, with acute tip, shorter than the eyestalks. 



The antennal scale that measures five-sixths the length of the carapace and that reaches 

 by about one-fourth its length beyond the antennular peduncle, has a narrow shape, the greatest 

 width, proximally, being one-sixth the length; it regularly narrows distally to the truncate tip 

 of the lamella, which is surpassed by the slender spine, into which the concave outer margin 

 terminates. Antennal peduncle hardly longer than the eyestalks, of a stout shape. 



The 2°"^ maxillipeds much resemble those of Stylod. Amarynthis. The 3'''' joint, 0.8 mm. 

 long and 0,22 mm. broad in the middle, is nearly 4-times as long as wide and narrows a little 

 more towards the distal than to the proximal extremity; the outer margin bears a few .setae 

 and much longer feathered setae occur on the outer surface near the inner margin. Carpus 

 short. The s''' joint, which is 0,54 mm. long, measures two-thirds of the 3'"'^ and slightly widens 

 distally, being at the distal extremity 0,21 mm. broad, as broad as the 3''''; at the far end of 



