530 
GEOGRAPHICAL ZOOLOGY. 
[part IV. 
Family 31. — TORNATELLIDJE. (7 Genera, 62 Species living, 
166 fossil.) 
Family 32. — BULLIDH5. (12 Genera, 168 Species living, 
88 fossil.) 
Family 33.— APHYSIADiE. (8 Genera, 84 Species living, 
4 fossil.) 
Family 34.— PLEUEOBRANCHIDJE. (7 Genera, 28 Species 
living, 5 fossil.) 
Family 35. — PHYLLIDIADiE. (4 Genera, 14 Species living, 
0 fossil.) 
Family 36. — DORIDiE, (23 Genera, 160 Species living, 0 
fossil.) 
Family 37. — TRITONIADAL (9 Genera, 38 Species living, 
0 fossil.) 
Family 38. — iEOLIDiE. (14 Genera, 101 Species living, 0 
fossil.) 
Family 39. — PHYLLYRHOIDiE. (1 Genus, 6 Species living, 
.0 fossil.) 
Family 40. — ELYSIADAC, (5 Genera, 13 Species living, 0 
fossil.) 
