174 " THETIS " SCIENTIFIC RESULTS. 



granulose; the granules are more or less connected at their bases by 

 reticulated white lines, and generally the tip of each granule bears 

 a few very short hairs ; the internal surface has a subcordiform 

 impression, the inner superior portion of which is limited by a 

 bright i^ed line. Inferior border evenly rounded, the superior 

 angular, smooth ; the latter has a small spinule at its distal 

 extremity, and the former terminates in a small white rounded 

 lobe ; the internal horder is strongly carinate, especially towards 

 the apex ; the basal half is straight, and carries two rows of 

 granules ; the distal half is curved, and bears a series of about 

 twelve small denticles ; there is a well-marked transverse groove 

 on the superior surface near the distal margin. 



Carpus subtriangulate, twice as wide distally as proximally ; 

 inner extremities excavated and adapted to the shape of the 

 preceding and following joints ; surfaces more or less granulose ; 

 superior border broadly rounded, sloping away on the left to short 

 prominent inner border, and on the right to the central longitu- 

 dinal ridge on the outer surface ; inferior boi'der rounded to 

 within a short distance of its extremity, where it becomes 

 suddenly angular, and terminates in an acute point. The outer 

 distal margin presents a smooth narrow ridge, which commences 

 at the lower articular condyle, and is continued to within a short 

 distance of the upper one ; the lower half of the ridge is bounded 

 posteriorly by a shallow groove, the upper is hidden beneath a 

 denticulated crest, the latter is a continuation of the granular 

 ridge on the external surface. Another crest extends from the 

 inner distal angle to the upper articular condyle ; behind the 

 latter there is a short longitudinal depression which marks the 

 inner limits of the crests. 



Hand compressed, its deptli at the obhquely truncated extremity 

 is about twice the transverse diameter of the central region of 

 the palm. Lower border denticulate, acutely keeled, evenly 

 curved throughout, the curvature tending upwards and inwards 

 as the extremity of the ill-defined lower finger is approached. 

 Upper border broad, rounded and closely granulose, with a short 

 transverse, minutely denticulated crest at its distal extremity, 

 and a longitudinal ridge on its outer aspect ; the ridge bears a 

 series of small subspinifoj'm granules, and is bounded below by a 

 shallow groove. Outer and inner surfaces of palm longitudinally 

 convex, both closely granulose ; the granules on the inner surface 

 are smaller than those on the outer, and proximally they are 

 more or less reticulately disposed ; there is an indistinct longitu- 

 dinal row of granules on the central region of the external surface, 

 and at the distal margin and near the lower border the granules 

 become subspiniform. 



Superior Ijorder of mobile finger arcuate, keeled and obtusely 

 denticulate; outer surface evenly rounded with numerous flattened 



