366 A Month on the Trondhjem Fiord. 
149. Macoma calcarea, Chemn. 
Rédberg, 0-5 fath. 
150. Macoma balthica, Linn. 
Trondhjem. 
151. Abra longicallus, Scacchi. 
Trondhjem, 150 fath.; Rédberg, 250-300 fath., rare. 
152. Abra nitida, Mill. 
Abundant, Trondhjem and Rédberg, 40-300 fath. 
153. Abra alba, Wood. 
Trondhjem, a single specimen. 
154. Poromya granulata, Nyst. 
Two specimens, 150 fath., off Trondhjem. 
155. Cuspidaria rostrata, Speng. 
Trondhjem and Rédberg, 70-300 fath. 
156. Cuspidaria obesa, Lovén. 
Rédberg, 150-300 fath. 
157. Cusprdaria costellata, Desh. 
Rédberg, 40-150 fath. 
158. Cuspidaria abbreviata, Forbes. 
Rédberg, 70-100 fath. 
159. Corbula gibba, Olivi. 
Only a small specimen or two seen. 
160. Saxicavella plicata, Mont. 
Trondhjem and Rédberg, 150-300 fath. 
161. Mya arenaria, Linn. 
Trondhjem, dead valves. 
162. Mya truncata, Linn. 
Trondhjem, on shore and dredged. 
163. Saxicava rugosa, Linn. 
Rédberg, down to 250 fath. 
Var. arctica, Linn. 
Unusually large examples of this variety at Réd- 
berg on the precipices down to 200-250 fath. 
164. Solen pellucidus, Penn. 
‘I'wo or three small specimens. 
