lilll PACK SKOCSItHIUl 



Fifth 1 i 111 h: — K(ir tlic sjuiif reasons us in tin- ciisc of the two prcctHliiig limbs 

 it st'fimnl U> nu- most rtmvoiiioiit to (Icscrilto in this ^cufric (Icscript inn tlic ..normiil type" of 

 tliis limb as fiuiiul bv mo. The charae'tors on this limb that arc not mi-utmiicil in the following 

 dosiriptions of spoi-ios are thus to be considered as agreeing with this type. — Protopodite: 

 This is in most cases unjointed, but has sometimes a faint indication ol Iwn joints. Tlic first 

 endite has two bristles, one situated somewhat ilistally of the other. The iHoxmial one of these 

 bristles is short, has sliort hairs and is of the tube-bristle type. The distal one is rather hjng, in 

 most cases about as k>ng as the broadtli of the [irotopodite (calculating from front to back), of 

 the ordinary type, furnished along its proximal half with rather long, stiff secondary bristles, 

 and with short hairs distally. The second endite is armed with three bristles. One of these 

 bri.stles is of about the same type and length as the long bristle on the preceding endite. The 

 two others are of the tube-bristle type; one of them has sliort hairs and is about as long as or 

 somewhat longer or shorter than the short tube-bristle on the preceding endite, the other is some- 

 what longer, often about half the length of the long ordinary bristle, either with short hairs 

 or with rather long, stiff secondary bristles at the middle (the latter character may sometimes 

 vary even within the species). Epipodial appendage: The middle one of the three 

 groups of bristles always seems to comprise five bristles. The e n d o p o d i t e is armed with 

 eight, in exceptional cases nine, bristles; one of these is situated ventrally* rather far back, 

 the others anteriorly on this branch. The latter (seven or eight) bristles are usually developed 

 as follows: Two of them are rather powerful, moderately strongly or rather weakly pectinated 

 claws, one of them, the ventral one, is about as long as the proximal height of the first exopodite 

 joint, the other is somewhat shorter. One bristle, in most cases attached somewhat more dors- 

 allv than the short claw, is about as long as or most frequently somewhat shorter than the latter, 

 has short hairs and is of the tube-bristle type. One (or in the case of nine bristles two) bristle, 

 situated close to (in most cases somewhat dorsally of) the long claw, is also furnished with short 

 hairs and is of the tube-bristle type, about as long as or somewhat shorter or longer than the 

 latter. In exceptional cases the tube-bristles of this branch are very short. The three remaining 

 (ventral ones) of the anterior bristles of this branch are in most cases rather long, of somewhat 

 different lengths, the longest of them often being about as long as or somewhat shorter or longer 

 than the long bristle on the first endite of the protopodite, the shortest about a quarter or a half 

 shorter. These three bristles are in most cases of the ordinary type, either all with short hairs 

 or else one or two of them are furnished with rather long secondary bristles at the middle (this 

 last character sometimes varies within the species). The anterior ventral bristle on this branch 

 is in most cases of about the same ty^je and length as the long bristle on the first endite of the 

 protopodite, but has most frequently softer secondary bristles; in exceptional cases this bristle 

 is more or less short. In a number of species this branch is furnished anteriorly on the outside 

 with a number of short spines. Exopodite: First joint: The dorso-distal bristle of this 

 joint is in most cases about as long as or somewhat longer than the two following joints; it has 



• Really laterally. The natural position of the endopodite is altered under the coverglass. Whereas the anterior 

 bristle-bearing edge of this branch points in its natural position of rest more or less horizontally-outward, it usually points 

 ventrally under the coverglass. It seemed to me most convenient in describing these bristles to take their bearings 

 as they are under the coverglass. „\'entrally" is thus really laterally, ..dorsally" corresponds to medially. 



