ISOl'ODS OF NORTH AMERICA. 



521 



which is ininuto. The second pair of antennas are composed of fonr 

 articles. 



The seven seo-nients of the thorax are distinct. The first four have 

 well-developed epimera, occupying- the anterior half of the lateral 

 margins, each epinieron being- placed lateral to the ovarian bosses and 

 produced into an anterior and a ])osterior lobe. The epimera of the last 



Fig. 567.— Ckyptione elongata (After Hansen), a, Maxilliped op female, h, Head of male 



(VENTRAL view). C, FiRST INCUBATORY LAMELLA OF FEMALE AND FIRST LEG. d, VENTRAL VIEW 



OF MALE, c, Dorsal view of female. /, Ventral view of female, g, Head of female with 



BOTH MAXILLIPEDS OMITTED (SEEN FROM BELOW). h, FiRST LEG OF MALE, i, FIFTH LEG OF MALE. 



tliree segments arc not distinct from the segments. The anterior j)or- 

 tion of the last three segments is produced into a large lobe which occu- 

 pies the entire lateral margin, the posterior portion of the segment 

 being small and sublateral, i. e., it lies on the inner side of the ante- 

 rior portion. The anterior lobes are larger on one side of the l)ody 

 than tliey are on the other side, and the}'^ have an additional small, 



