pt>Sterior brittle < M' llic two ;lI\tiTlnr dllcs. which ;nc' MIikiIimI >(inii'\\h;it ilist;i|ly (if the iniddlr 



of till' joint, the imtcrior one is oftt'ii soimw h:it loiii^rr ihan ihc othff ;iihI nliout as Imi^ as the 

 total longtli of tlio tliii'il ami fourth joints. Thf [lostcrior hiistic on this joint is in most cuscs 

 about as lonji as tho shortor of the two anterior ones. Tho fourth joint has two anterior and four 

 posterior bristles. The latter are of about the same relative lenjjth as in PJi. ( I'li.) (//(ilxim; 

 the two anterior ones are in most cases about as long as or somewhat longer than t hr two anterior 

 bristles on the preceding joint. The l)ristle on the fifth joint and the a-bristle on the end joint 

 are subequal. tlieir lenirtli l)eing about the same as the total len^dh of the fonith and liftli or 

 the fourth to the sixth joints. The lengtli of the bristles discussed so far varies somewhat, 

 though only slightly; their equipment is usually two to four irregular wreaths of long, stiff 

 secondary bristles. The sensory bristles on the end joint (fig. 5) have the following equipment: 

 the b-bristle has two proximal and three distal sensorial filaments; the c-bristles have seven 

 proximal and four distal sensorial filaments: tlie f- and g-bristles have six proximal and four 

 distal sensorial filaments. Pilositv: ,The second to the fifth joints have rather abundant trans- 

 verse groups of short, stiff hairs. 



Second antenna: — E x o p o d i t e: This is very like that of I'll. ( I'h.J globosa. 

 The proportion between the length of the first joint and the length of all the succeeding joints 

 is about the same as in Ph. (Ph.) Lilljeborgi. The bristles on the second to the fourth joints 

 are about as long as the two to three proximal joints, bare, and finish distally as two short, fine 

 points. In females with large eggs in tlie biood chamber the long natatory bristles are broken 

 off in the same way as in Ph. (Ph.) globosa. There are no basal sj^ines, but a number of hairs 

 in the distal rows of hairs on the second to the eighth joints are considerably strengthened and 

 are like spines at the place where in other species the basal spine is to be found. E n d o- 

 p o d i t e (fig. 6): The first joint is very similar to that of Ph. (Ph.) globosa. The second joint 

 is rather short; ventrally it has only one bristle, situated somewhat proximally of the middle 

 of the joint. This bristle has numerous wreaths of long, stiff secondary bristles at the middle 

 and short hairs distally and is exceedingly long, almost as long as the protopodite of this antenna. 

 In one specimen (the type-specimen) there was observed on the antenna of one side, somewhat 

 distally of this bristle, an additional bristle of about the same length and type as the bristles 

 on the first joint. The distal bristle of the second joint is about as long as or somewhat shorter 

 than this joint; it is rather pointed distally. 



Mandible (fig. 8): — Protopodite: The basale has ventrally ten to twelve, 

 usually ten, bristles of different lengths, some moderately long, some, especially among the distal 

 ones, rather long. Dorsally this joint has, apart from the two distal bristles, only one bristle, 

 situated somewhat in front of the middle of the joint; the latter bristle is about as long as this 

 joint, the two distal bristles differ somewhat in length, the longest being about as long as the 

 dorsal side of this joint or even somewhat longer; these bristles have one or a few wreaths 

 of long, stiff bristles at the middle and fine, short hairs distally; sometimes the proximo -dorsal 

 bristle has no wreath. The two bristles of the exopodite are of about the same type 

 and length as the two distal bristles on the second protopodite joint, .sometimes they are 

 rather longer, sometimes a little shorter. Endopodite (fig. 11): The four ventral bristles 



