46
smithsonian miscellaneous collections
vol. 85
| 8. | (✕ 6.) Enlargement of the filaments of one of the thoracic exopodites in which the filaments retain their original round, slender tubular form. This is the only specimen among several hundred that I have examined which has escaped flattening by compression. This is due to the pyritization of the filaments of this particular specimen. | |
| 9. | (✕ 4.) Ventral view of a specimen illustrated to show what appears to be a small oval flattened lobe attached to the dorsal side of a protopodite or it may be to the proximal joint of the exopodite; a number of the thoracic exopodites with the filaments projecting forward occur on both sides, also fragments of the large postero-lateral spines of the carapace which lie above the exopodite of the thoracic limbs. |
Plate 23
| PAGE | |
| Helmetia expansa Walcott | 38 |
| Photograph of the holotype. |
