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TAGE SKOGSBERG 



bristles have about the same length in relation to the antenna as in the type sjjecies. The 

 distal C-, f- and g-bristles have considerably fewer filaments and the sensory bristle of the fifth 

 joint has also somewhat fewer filaments, as is shown in the following table. (The lengths 

 given are the averages of right and left first antennae; often, however, the right and left bristles 

 were quite equal in length; the difference was never great.) 



In other respects this limb is like that of the type species. 



Second antenna: — This is very Uke that of the type species. In specimen a 

 the end bristle on the endopodite was about the same length as the endopodite, in the other 

 specimen it was relatively somewhat longer (endopodite : end bristle = about 25 : 30). 



Mandible: — Protopodite: Basale: In specimen a the longest c-bristle had 

 a few long secondary bristles in the middle, in the other specimen this bristle had only short 

 hairs, as in the type species. Exopodite: The distal bristle is of about the same length 

 as the exopodite or slightly shorter. Endopodite: The first joint: In specimen b there were 

 on the right mandible — ■ contrary to all the other forms of this family investigated by me — 

 five ventral bristles, the shortest one of the four that appear normally was duplicated (presumably 

 an abnormality). Second joint: The bristles on the anterior side are subject to rather great 

 variation; on specimen a there are about ten to fourteen more or less long bristles of varying 

 length with sparse, short hairs and a relatively rather small number of cleaning bristles either 

 not arranged at all or arranged only in indistinct rows (about ten to twelve) ; the cleaning bristles, 

 as in the type species, vary somewhat in length; they are all bare or have exceedingly fine pecti- 

 nation; the other specimen was, with regard to these bristles, considerably more Like the type 

 species, their number being only slightly fewer than in the latter, and among the cleaning bristles 

 the same types could be distinguished. On the posterior side of this joint the former specimen 

 had, in addition to the two distal bristles situated near each other, two to four more bristles, 

 the latter specimen three more. In other respects they were like the type species. 



Maxilla: — Protopodite: The first endite has twelve bristles, the right maxilla 

 of specimen a thirteen. The third endite has eight distal bristles, the right maxilla of specimen b 

 only seven; the equipment of these bristles is — as is the case with the rest of the endite 

 bristles of this limb — somewhat weaker than on the type species; bristles nos. 4 — 7 (4 — 6 when 

 there are only seven bristles) , counting from outside, are quite smooth distally. Exopo- 

 dite: One of the two long distal bristles has only short hairs. E n d o 2^ o d i t e: First 

 joint: In specimen a this has three anterior and three posterior distal bristles, in specimen b th(^ 

 right maxilla on this joint lias four anterior and four posterior ones distally (as in the t\'pe 



