PLATE VIL 



Fig. i. Acis serrata n. sp. Natural size. ia, part of branch x 5. 



Fig. 2. Acis squaniata n. sp. Natural size. 2 a, part of branch X 5- 



Fig. 3. Acis soloraisis n. sp. Natural size. $a, part of branch X 5- 



Fig. 4. Bebryce tliomsoni n. sp. Natural size. 4a, part of branch X 5- 



