52 A MONOGRAPH OF THE 



37. E. tricolor. For. Buffi sh-yellow, ovate-oblong ; branchise elliptical, inflated, with a violet central 



vessel and yellow tips, set in 13 or 14 rows. Length 1 to li inch. PI. 34. 



38. E. amethystina, A. and H, Yellowish-white; branchise elliptical, much inflated one way and 



depressed the other, with the central vessel purple, granulated, and a broad ring of pale 

 orange-red at the top, set in 10 rows; dorsal tentacles twice the length of the oral ones. 

 Length § inch. Appendix (31), p. xi. 



39. E. Farrani, A. and H. Yellowish-white or lilac, with orange spots; branchise ovate-oblong, 



inflated, yellowish- white or lilac, with a ring of bright orange near the apex, set in 9 or 10 

 rows ; tentacles banded with orange. Length ± inch. PI. 35, and Appendix (32), p. xii. 



40. E. exigua, A. and H. Yellowish-white marbled with brown ; branchise ovate, abruptly pointed, 



with 2 or 3 bands of brown, reddish above, set in 5 rows of 1 or 2 each ; dorsal tentacles 

 longish, oral rather short, both banded with brown. Length ~ inch. PI. 37, and Appendix 

 (33), p. xii. 



Section 4. Branchise fusiform, set in a single row on each side of the back ; sides of the 

 foot rounded. Spawn reniform. Tergipes, Cuvier. 

 Lingual plate with a stout central spine and marginal denticles. 



41. E. despecta, Johns. White, with an undulating olivaceous line in the middle of the back; branchise 



ovate, white with a yellowish or olivaceous granulated centre, and generally a reddish ring 

 near the top ; dorsal tentacles long, smooth ; oral tentacles short. Length T 2 5 inch. PI. 36, 

 and Appendix (34), p. xii. 



Genus 14. EMBLETONIA, Alder and Hancock. 



Tentacles 2, linear, dorsal ; the oral pair fused into two flattened lateral lobes. Branchise 

 few, fusiform, set generally in single series down the sides of the back. 



Tongue, a single plate bearing a central spine and lateral denticles. Corneous jaius. 



1. E. pulchra, A. and H, Flesh-coloured, spotted with white; tentacles short, distant; branchise 



elliptical, orange-red spotted with white, 5 or 6 in single series on each side. Length -^ inch. 

 PI. 38. 



2. E. minuta, For. and Goods. Pinkish-yellow, linear; tentacles longer than in the last, wrinkled; 



branchise linear, vermicular, pinkish, tipped with white, arranged in single file, 7 on each 

 side. Length \ inch. Appendix (35), p. xii. 



3. E. pallida, A. and H. Yellowish-white with a few black spots on the back ; tentacles approxi- 



mating ; head-lobes indistinct, forming a semicircular veil, produced at the sides ; branchise 

 nearly linear, very pale orange, set in 4 or 5 rows of 2 papillse each on each side. Length 

 Y inch. Appendix (36), p. xii. 



Sub-Fam. Herm^in^e. Tentacles 4, 2, or none. Anus dorsal. Digestive system with 2 lateral 

 posterior gastro-hepatic vessels. 



Genus 15. FIONA, Alder and Hancock. 



Branchise numerous, papillose or fusiform, with a membranous expansion down the side 

 of each;. set on the sides of the back. Tentacles 4. Anus latero-dorsal. Fam. 3, PI. 38«. 

 Tongue, a single stout plate with a central spine and marginal denticles. Corneous jaws. 



