38 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 57 



DESCRIPTION OF PLATE 6 



PAGE 



Neolenus serratus (Rominger) 27 



Fig. I. Branchial fringes on the exopodites of the left side of the in- 

 terior of a compressed dorsal test. X i-5- Other specimens 

 show the endopodites as slender, jointed legs. The speci- 

 men photographed was associated with Sidneyia inexpectans. 

 U. S. National Museum, Catalogue No. 57500. 

 2. A cephalic endopodite with lamellated branchial fringe. X 3- 

 This occurs on the opposite side of the specimen represented 

 in part by fig. i. 



Sidneyia inexpectans Walcott 24 



Fig. 3. Photograph by reflected light of a broken specimen of the dor- 

 sal shield through which may be seen traces of the branchial 

 lamellae and fringes and some of the appendages of the 

 cephalo-thorax. Natural size. U. S. National Museum, 

 Catalogue No. 57497. 



