PATAGONIAN EXPEDITIONS : PALAEONTOLOGY. 
EXPLANATION OF PLATE XXXVIII. 
PAGE 
Fig. i. Verruca laevigata Sow. . . . . . . . . 248 
Patagonian beds ; upper Rio Chalia. 
1 a. Fragment of Turritella ambulacrum, showing three of the 
individuals of Verruca in situ. 
1 b. Schematic figure, drawn from a combination of the two speci- 
mens, which have the left scutum and tergum, fixed, 4/1. 
ic. Scutum and tergum of latter figure, a little more enlarged. 
Fig. 2. Balanus cf. psittacus (Mol.). ........ 249 
Patagonian beds ; Lake Pueyrredon, base. 
One of the two large specimens, from the outside. 
Fig. 3. Balanus vartans Sow. ......... 250 
Patagonian beds. 
3#. Upper view of an individual of form 1 ; Oven Point, San Julian. 
3b. Sideviewof an individual of form 2; Darwin Station, San Julian. 
3 c. Side view of two individuals of form 3; Oven Point, San Julian. 
3d. Inner view of scutum, from a colony of form 3 ; Oven Point, 
San Julian. 
3<?. Inner view of tergum, from the same colony. 
Fig. 4. Balanus cf. trigonus Darw. . . . . . . . . 252 
Cape Fairweather beds ; Cape Fairweather. 
4 a. Colony on Terebratella gigantea. 
4 b. Scutum, found in this colony. 
4 c. The same, 4/1. 
4 d. Tergum, found in another colony. 
\e. The same, 4/1. 
Fig. 5. Balanus l,evis Brug. ......... 254 
Cape Fairweather beds ; Cape P'airweather. 
5«. Colony upon a stone. 
5 b. Scutum, taken from this colony. 
5 c. The same, 3/1. 
5 d. Tergum, taken from the same colony. 
$e. The same, 3/1. 
Fig. 6. Geryon (?) peruvianus (d’Orb.) . 255 
Patagonian beds. 
6 a. Upper view of carapace. Lake Pueyrredon, 6oo' above base. 
6b. Lower view of a part of the body, showing large chela and 
third maxilliped. Mt. of Observation, lower horizon. 
All of the figures, unless otherwise stated, are natural size. 
(VOL. iv) 
