592 TAGE SKOGSBliRO 



Fifth 1 i m b (fig. 23, (^ = $): — Tlio p r o t o p o d i t e is unjointed. On its first 

 endite tliere is one sliort tube-bristle witli sliort hairs. ( )n the second endite tliere are tliree 

 bristles, one of which is about as long as or somewhat shorter than the breadth of the protopodite 

 (calculating from front to back); it has short hairs and is usually pointed; the two others are 

 most frequently tube-bristle,s with short hairs; they are rather short, the smaller one being 

 about as long as the bristle on the first endite. The e p i p o d i a 1 plate has five bristles 

 in the middle grouj). E n d o p o d i t e: This has almost constantly eight bristles; only on one 

 fifth limb of one specimen were nine found. Two of these, situated on the antero-ventral corner 

 of the jjrocess, are rather powerful and bare or almost bare; the others are moderately strong 

 or rather weak, with short hairs or almost bare. They are all of moderate and somewhat different 

 lengths, the longest being about as long as the longest bristle on the second endite of the proto- 

 podite, the shortest about half this length; a number of them are of the tube-bristle type. 

 B X o p o d i t e: First joint: This has five short-haired ventral bristles, subequal or differing 

 rather slightly in length, the longest being usually as long as the height of this joint proximally; 

 some of them are of the tube-bristle type; one of these five bristles is situated near the distal 

 boundary of this joint, the rest are scattered somewhat more proximally. The bristle situated 

 dorso-distally on this joint is very long, being about the total length of the first and second 

 exopodite joints; it has short, fine hairs and is pointed. Laterally, in most cases somewhat 

 dorso-distally of the middle of this joint there is a short-haired, pointed bristle, which is about 

 as long as the second exopodite joint. The three bristles of the second joint are often subequal 

 and about as long as this joint; they have short hairs; the two ventral ones are usually of the 

 tube-bristle type, the dorsal one sometimes of this type, sometimes pointed. End joint: Its 

 three bristles are about as long as the second exopodite joint; tlae dorsal one is usually only 

 slightly longer than the middle one, the latter is most frequently slightly longer than the ventral 

 one; the lengths of these three bristles are, however, subject to some variation. The middle 

 one of them, which is in most cases somewhat more powerful than the others, has a point of 

 about the same type as is reproduced below in fig. 28 of Conchoecia symmetrica; the two others 

 are of the tube-bristle type; they are all fiu'nished with fine, short hairs or are almost bare. 

 This limb is practically always quite bare. 



Sixth limb (fig. 24, ^ almost = ?) : — This is of moderate size and strength and has 

 moderately strong musculature; presumably it is not used as an auxiliary organ in swimming. 

 The p r o t o p o d i t e is in most cases rather distinctly two-jointed. The e n d o p o d i t e 

 is only partly joined to the protopodite; a remnant of its musculature can be observed. It has 

 two bristles, one of which is in most cases about as long as the first exopodite joint, the other 

 somewhat longer; the shorter one has short hairs or is almost bare, the longer one is most fre- 

 quently plumous at the middle; both are pointed. Exopodite: First joint: Ventrally 

 this has three bristles, subequal, or differing only rather slightly in length and about as long as 

 the longer of the two bristles on the endopodite; one of these three bristles is situated about 

 half-way along the joint, the two others more or less distally; they are all of the same type, 

 pointed, and in most cases plumous at the middle. The dorso-distal bristle on this joint is of 

 the same type and of about the same length as the three ventral ones; it is often of the tube- 



