SUiilics oil marine Oslrarods .)9l 



remaining bristles on this endite two arc of the tube-bristle type and three are pointed. The 

 tube-bristles are rather weak, with short, fine hairs or bare and are of moderate and somewhat 

 different lengths, the shortest often being not quite half as long as the postero-inner bristle 

 of this endite. Of the three pointed ones, all of which are bare or armed only with a rather 

 slight number of weak secondary teeth, two are often subequal and about as strong as the 

 postero-inner bristle, but in most cases about a third shorter than this; the third is most fre- 

 quently short and rather weak. (The proportions of these bristles are in most cases the same 

 as in the accompanying figure.) Of the five bristles on the anterior process of this endite the 

 antero-outer one is of about the same type as the postero-inner bristle on the posterior process 

 of this endite, but is considerably weaker and somewhat shorter than this; its length varies, 

 however, to some extent. The bristle situated next to this is of the same type and of about 

 the same length and strength as the longest tube-bristle on the posterior process. The three 

 remaining ones are pointed and bare or armed only with a small number of rather weak secondary 

 teeth; one of them is of about the same strength and length as the shortest pointed bristle on 

 the posterior process, one is in most cases about as long as or somewhat shorter than the postero- 

 inner bristle of the posterior process, but is somewhat more powerful than this; the remaining 

 one is also rather powerful, but is somewhat, sometimes considerably, shorter than the 

 latter bristle (on the anterior process). The basale has a single short-haired or almost bare 

 tube-bristle, the point of which reaches or goes a short distance past the distal boundary of the 

 first endopodite joint. Endopodite (fig. 15, (^ = ?): First joint: This has along the 

 anterior edge four to six rather long bristles, often differing somewhat in length; the longest 

 is about as long as or somewhat shorter than the length of this joint, the shortest is about as 

 long as the distal breadth of this joint; sometimes they are subequal; their position varies some- 

 what; they are all furnished with short, fine hairs: the distal one is sometimes of the tube-bristle 

 type, the others are pointed. On the posterior edge of this joint there are three bristles, situated 

 rather near each other somewhat distally of the middle of this joint; they are of somewhat 

 different lengths, varying within about the same extremes as the bristles on the anterior edge 

 of this joint; they have short, fine hairs and are of the tube-bristle type or pointed. The inner 

 bristle on this joint is in most cases situated somewhat distally of the middle of this joint; it 

 is often about half as long as this joint, has short, fine hairs and is usually of the tube-bristle 

 type. The end joint is rather short and thick, only about half as long as the breadth of the first 

 endopodite joint at the middle. It has five distal bristles. Of these the anterior and the 

 posterior ones arc rather strong, the others are moderately strong or rather weak. The 

 anterior one is often about as long as the anterior side of this joint, the posterior one is 

 in most cases not quite twice as long. The three others are of somewhat different lengths, 

 the longest being in most cases about as long as or somewhat shorter than the posterior 

 one, the shortest often only half this length. All these five bristles have short, fine hairs 

 or are almost bare; some of them are (at least sometimes) of the tube-bristle type. Pilosity: 

 Most frequently completely bare; the second endopodite joint is, however, sometimes furnished 

 with short, fine hairs. It is to be noted that the first endopodite joint is quite without spines 

 distallv on the inside. 



