118 BULLETIN !iO, UNITED STATES NATIONAL MUSEUM. 



Plate V. 



Figs. 1,2. Alepas pacified, new species. Maxilla and mandible. 



3. Scalpellum aurivillii incertum, new subspecies. Mandible. 

 4-6. Alepas pacificn, new species. Third and first cirri and jienis. 

 7, 8. Heteralepas cygnus, new species. Maxilla and mandible. 



9. Scalpellum aurivillii incertum. Maxilla. 



10.11. Paicilasma kxmpferi Darwin. Maxilla and mandible of a Japanese 



example. 

 12, 13. Heteralepas cygnus. Terminal appendage and portion of the sixth cirrus, 

 anterior side on the left side of the figure. 



14. Megalasma annandalei, new species. Intermediate segment from sixth 



cirrus, anterior side on the right side of the figure. 



15. Scalpellum aurivillii, new species. Mandible. 



16. Megalasma gracde gracilius, new subspecies. Maxilla. 



Plate VI. 



Figs. 1, 2. Pcecilasj)ta ka'injjferi litum, new sub.si)ecies. Lateral and ventral views. 

 3, 4, 5. Pa-cilasma kiempferi Darwin. .Tapau.^ Interior of scutum, interior and 

 lateral views of carina. 

 6, 7. Pcecilasma inicquilaterale, new species. Lateral and ventral views of the 

 type. 

 8. Piccilasma inxquikiterale, new species. Interior of scutum of a specimen 

 from off Key AVest. 

 9, 10. Poicilasma iincquilaterale breve, new subspecies. Ventral and lateral views 



of the type. 



11.12. Pa'cilasma inivqn Hater ale, new species. Lateral and ventral views of a 



topotype. 

 13, 14. Pwcilasma hxinpferi iiovieungli:r, new subspecies. Lateral and ventral 

 views of the type. 



Plate VII. 



Figs. 1-5. Megalasma siihcarinatum, new species. Lateral and dorsal views of type; 

 interior of scutum; inside and lateral views of the carina. 

 6-9. Megalasma gracile gradlius, new subspecies. Lateral view of type; interior 

 of scutum; inside and lateral views of carina. 

 10-14. Megalasma rectum, new species. Lateral and dorsal views of type; interior 



of scutum; inside and lateral views of the carina. 

 15-19. Megalasma annandalei, new species. Lateral and dorsal views of the type; 

 interior of scutum ; inside and lateral views of the carina. 



Plate VIII. 



Fig. 1. Lepas anserifera Linnanis. Cherrystone, Virginia. Ijcngth of capituhnn 

 27 mm. 



2. Le])as hillii Leach. Menimsha, Marthas Vineyard, Massachusetts. Dia- 



gram of base of the capitulum. 



3. Lepas anserifera Linnaeus. Longitude 90° east, on the equator. Length 



of capitulum 19 mm. 



4. Lepas pectinata Spengler, spinose variety. Albatross Station 2379, Gulf of 



Mexico. Length of capitulum 9 mm. 

 5, 6. Lepas pectinata Spengler, inflated variety, carinal and lateral views. 

 Bering Island. Length of capitulum 16 mm. 



7. Lepas liillii Leach. Menimsha, Marthas Alneyard. Length of capitulum 



35 mm. 



8. Lepas jjectinata SiiengleT. Vineyard Sound. Length of capitulum 12 mm. 



