Viewing page 431 of 473

This transcription has been completed. Contact us with corrections.

Camarotoechia On[[?]]talis
Mingan Islands
Small, 3 ribs in deep sinus, strong L ribs, 4 ribs on flanks. L. 16, @ 16 figure 1041 F. 3 views

Several specimens with 4 ribs in salens, & 5 on flanks. May be another species

1041a, b, d, R, 1041
Specimens with 4 ribs are wider than those with 3 & have a more convex dorsal valve. Select 1041b for type L 16, W 19

Flanks of 4 ribs sinus very flaring [[strikethrough]] slides [[/strikethrough]] spiral L obtuse, one with 3 ribs is acute. Beak of 3 ribs more acute. 4 views each,

Hebertella borealis 1035c
Type specimen, broken, dorsal side strongly convex, sinnate to margin, strong ribbed. 5 in 10 at front. Apsacline, narrow delthynium Cardinal extremities deflected strongly dorsally. Doyals lateral slopes very steep towards the cardinal extremities. Ventral valve flattened with very gentle lateral slopes. Type L 35, W 42. Ribs become very fine on flanks 28 ribs on ventral side of type

A large specimen 1035a suggests H. imperator. It is L. 44, W 50