40 



CARL BOVALLIUS, THE OXYCEPHALIDS. 



The outer and the inner ramus are usually both well developed, 

 and more or less equal in length. Exceptions from this are Dory- 

 cephalus Lindstroemi (fig. 77), Xiphocephalus armatus (fig. 80) 

 and X. brevicaudatus. In the first of which the outer rami of the 

 first and third pairs and in the two latter those of all the three pairs 

 are very reduced in size, diminutive. 



Usually we have well developed glands in the peduncles and 

 rami; their outlets are usually situated at the upper end of the rami. 

 where the rami are in contact with one another. In Xiphocephalus 



Fig. 78. The second Fig. 79. The third Fig. 80. Xiphoce- Fiy. 81. The inner Fig. 82. Telson 

 pair of Xiphocepha- pair of Xiphoce- phalus armatus. ratmis of the third of Xiphocepha- 

 lus Whitei. phalus Whitei. pair of Xiphoce- lm Whitei. 



phalus Whitei. 



the glands are highly developed, filling not only the uropoda but also 

 the telson; at the apex of the telson a small circular outlet is to be ob- 

 served; at the end of some of the rami there are also similar outlets 

 to be seen (fig. 81 and 82). *) 



1) In the following parts of the Morphological Notes I give a few preliminary 

 notices on the nervous system, glands, etc., reserving a fuller account of the different 

 organs of the Oxycephalids for the third volume of my Contributions to a Monograph 

 of the Amphipoda Hyperiidea. 



