— M 15 
78. Ostrea ( Aleetryonia) Merceyi, Coquand. Rocour (HF). 
74. Ostrea (Aleetryonia) pectinata, Lamarck. Momalle 
(UP). 
75. Ostrea (Aleetryonia) ungulata, Sclilotlieim sp. Rocour 
(PD). 
76. Ostrea acutirostris, Nilsson. Rocour (HF). 
77. Ostrea lateralis, Xilsson. Rocour (HF), Petit-Hallet 
(GS). 
78. Ostrea semiplana, Sowerby. Rocour (AF). 
Brachiopodes. 
79. Terebratella ( Trigonosemus ) elegans , Kœnig. Rocour 
(PH). 
80. Terebratella (Trigonosemus) elegans, Koenig, var. 
pectitus, d’Orbigny. Rocour (HF), Wansin (UG, 
n° 7571). 
81. Terebratula carnea , Sowerby. Rocour (UG, n os 110, 
m, 23 i 4 , 5766, 5767, UP, HF, AF, PD), Alleur 
(HF), Liège, Ste-Walburge (UP), Momalle (UP), 
Hollogne-aux-Pierres (UG, n° 116, HF), Liers 
(AF), Viemme (UG, n° 23 io), Xliendremael (UG, 
n° 7244, GS), Vottem (UG, 11 0 6125, GS), Freloux 
(AD), (GS), Marets (UG, 11 0 7564 ), Wansin 
(UG, n° 7671), Petit-Hallet (UG, n° 9355, GS). 
82. Terebratula carnea, Sowerby, var; elongata, Sowerby. 
Rocour (HF) , Momalle (UP) . 
83 . Terebratula obesa, Sowerby. Alleur (HF), Rocour 
(PD), Momalle (UP), Petit-Hallet (GS). 
84. Terebratula obesa, Sowerby, var. abrupta, Tate. 
Rocour (PD), Xliendremael (UG, n° 7243, GS). 
85 . Terebratula obesa, Sowerby, var. ciplyensis, Halm- 
stein. Vottem (GS). 
86. Terebratula obesa, Sowerby, var. curvirostris , Xilsson. 
Rocour (PD, HF). 
