40fi 'I'AOE SKOOSnERf. 



On this ])art there is also an elongated little ])()oket. situated about parallel to the margin of the 

 shell; on the edge of this pocket there are often a few extremely short bristles; this pocket is 

 often full cf all sorts of dirt. F'or the selvage see figs. 4 and .5. The marginal bristles on the 

 rostral selvage are rather sliort. According to (i. O. 8AliS's statement the shell has a j)alc 

 yellowish colour. 



First ant e n n a (fig. 7): — < >f the three bristles on the second joint the posterior 

 one, which is sonunvhat longer than the two others, is usually as long as the total length of the 

 third and fourth joints. The third joint has three or four, usually three, bristles anteriorh'; 

 the anterior one of these is ratlier short, usually not (juite so long as this joint, the others are 

 subecjual and in most cases about as long as the fourth joint. The posterior bristle on this joint 

 is short, about half the length of the next joint or somewhat longer. The fourth joint has the 

 same bristles as in Ph. (Ph.) globosa; their length is, however, on the average, somewhat less 

 than in this species, the two medial ones and the four posterior ones especially are rather short. 

 The bristle on the fifth joint is about the same length as this joint. The a-bristle on the end joint 

 is about the same as the anterior bristle on the fourth joint. Most of these bristles have one or 

 a few wreaths of long, stiff secondary bristles at the middle; these are, however, often missing 

 on the short anterior bristle and the posterior one on the third joint. Variation in the secondary 

 bristles may, however, be observefl; in the length of the bristles so far mentioned I have also 

 observed some, though only rather slight, variation. The bristles of the end joint (fig. 8) have 

 the same ecjuipment as in Ph. (Ph.) globosa, i. e. the b-bristle with one proximal and three distal 

 sensorial filaments, the c-bristles with five proximal and four distal sensorial filaments, the 

 f- and g-bristles with four and three proximal sensorial filaments respectively and four distal 

 sensorial filaments; in one specimen six proximal filaments were observed on one c-bristle on 

 the antenna of one side. The pilosity is about the same as in Ph. (Ph.) globosa. 



Second antenna: — E x o p o d i t e : This is very like that of Ph. ( Ph.) globosa. The 

 propoi'tion between the length of the first joint and the total length of all the following joints 

 is about 43 : 37. In some cases females with rather large eggs in the brood chamber were dis- 

 covered with their long natatory bristles quite intact; in most cases, however, these natatory 

 bristles were broken off as in Ph. (Ph.) globosa. This may perhaps indicate that this character, 

 of having the long natatory bristles broken off is not completely fixed in this species. There 

 seem sometimes to be no basal spines at all on the second, or the second and third, joints. In 

 most cases the basal spines are simple; sometimes, however, thev have two or three points. 

 In some cases one or more small spines may be observed close to one or moic of the basal spines 

 (cf. p. 385 above). Endopodite (figs. 1) and 10): The first joint has quite the same 

 e(|uipinent of bristles as this joint in Ph. (Ph.) globosa. The second joint has several bristles 

 ventrally: One rather long one — its length varies somewhat, however — situated somewhat 

 proximally of the middle of the joint; this bristle is furnished at the middle with several irregular 

 wreaths <ii' long, stiff secondary bristles and with short hairs distally. Distally of this bristle 

 there aic in most cases three moderately long bristles; on one specimen onlv two l)ristles were 

 observed on the antenna ol one side; whether the third had been broken off could not be decided 

 with any certainty, though probably it had not been. (!. S. Hl!.\li\ and A. M. Nni;MA\, ISIX) 



