Fig. 
PLATE XXVI 
I—16. Hexelasma velutinum n. gen. n. sp. 
Fig. 
Fig. 
i B vo 
=-— = = 
SLE et O NG)! C0 GSTEON 
ee 
ite 
14. 
ins 
16. 
Shell, cylindrical form, lateral view; magnified 4 diameters. 
a and é, scutum and tergum, internal view; magnified 5,6 diameters. 
c and d, scutum and tergum of the specimen of Fig. 1, external view; magnified 5,6 
diameters. 
Shell, conical form, lateral view; magnified 4 diameters. 
Same specimen seen from above; magnified 4 diameters. 
a and 4, scutum and tergum, internal view; magnified 5,6 diameters. 
c and d, scutum and tergum of the specimen of fig. 3 and 4, external view; magnified 
5,6 diameters. 
Rostrum, internal view; magnified 5,2 diameters. 
Labrum, central part, with right-hand palpus; magnified 144 diameters. 
Labrum with palpi; magnified 44,5 diameters. 
Triangular shield-formed central part of labrum; magnified 44,5 diameters. 
Part of border of labrum; magnified 206,5 diameters. 
Mandible; magnified 44,5 diameters. 
Inferior angle of mandible of other specimen; magnified 206,5 diameters. 
Manilla; magnified 44,5 diameters. 
Edge of maxilla of other specimen; magnified 144 diameters. 
Outer maxillae; magnified 44,5 diameters. 
Sixth cirrus, one of the middle segments; magnified 44,5 diameters. 
Penis and lower segment of pedicel of sixth cirrus; magnified 44,5 diameters. 
Sixth cirrus and penis, to show the size of the latter; magnified 10 diameters. 
