Wkiciit — Limncstheria : A Mow CiinchoiilriK-uii dniiis. 



'.)\ 



ill that Conchustracau shells are well ineseived in llie same beds and 

 sometimes even on the same slab of rock. The shell shown in fig. 3 lies 

 close beside a very mueli enished animal, which, however, has two valve 

 outlines of its own. It corresponds well both in size and shape with the 

 outlined valve. The danger of judging from mere close association of this 

 nature is, however, exemplified in fig. 4, where two fragments of antennae 



Fio. 4. —Shell (Specimen 10) of unusiiuUy large dimensions associ;iteJ willi antennae. The imnctule 

 surface cbaracteristic of Oonchostracan shells, modern and fossil, is shown in a small 

 area near the centre of the shell. 



which differ in no respect from the antennae of tlie more complete animals 

 are found in contact with a relatively mucli larger shell of distinctive 

 shape. Another well-preserved large carapace of Limnadopsis type — 

 Limnadopsis being the giant of the order — also occurs in these beds. 



V 



Fig. .5. — A. Distorted specimen (No. 12), showing viJves, anteninic, and one maniible. 



B. Specimen 13, shuwing straight candal fiiroae comparable to those of Specimen 4, 

 figured on PI. XXV, tigs. 2 and 2a, and traces of three of the branchial legs. The 

 relatively small size of the antenna .and Iclsun in this .specimen may possibly indicate 

 i7nmaturity. 



so that it is clear that we are dealing with a fauna embracing a number of 

 Oonchostracan forms, any of which miglit have become accidentally associated 

 with the body-parts of which au account is given here. 



