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lower side and the jalane of the fingers being perpendicular to the horizontal plane and parallel 

 with the sagittal plane of the body ; the inner face of the palm is therefore situated at the outer 

 side, the outer at the inner side. The chelae are 5,9 mm. long, the fingers much shorter 

 than the palm : the proportion, indeed, between the length of the palm and that of the fingers 

 is as I : 0,55, the fingers being but a little more than half as long as the palm. The palm is 

 nearly cylindrical, 3,45-times as long as high in the middle, showing here the greatest height 

 of 1,1 mm., while the height slightly decreases toward the articulation of the fingers. The 

 lower (upper) border of the palm bears a rather broad, though quite shallow groove that runs 

 from the carpal articulation to the middle; a transverse groove, however, just behind the 

 articulation of the dactj-lus, which is observed in Alph. trispinosus and in Alph. chilensis, is 

 wanting completely. The inner (outer) face of the palm appears also slightly concave, almost 

 along its whole length, the concavity extends from the lower (upper) border until near the 

 upper (lower), but it gradually disappears distally ; the outer (inner) surface of the palm is 

 convex, like the upper (lower) border, and rounded, but one observes on that surface a small 

 excavation at the base of the immobile finger. The fingers are strongly compressed and 

 shut close together, while the brown horny tijDs cross one another. The lower (upper) margin 

 of the dactylus is distinctly curved and the dactylus shows it greatest breadth a little beyond 

 the middle, where the cutting-edge somewhat projects, though this prominence is rounded, and, 

 like in the genus Amphibetaeus Cout., this prominence fits into a deep groove, nearly 

 twice as long as broad, of the immobile finger. The dactylus appears here just one and a half 

 as high as at its base; between the base and the prominence one observes 4 small, conical 

 teeth, of which the first or most proximal is smaller than the three following. Between the 

 oblong groove and the articulation the immobile finger bears 6 similar, small, conical 

 teeth, the first smaller than the following, the sixth obtuse and rounded; between the groove 

 and the tip, finally, the cutting-edge is rather sharp. The height or width of the immobile 

 finger is nearly the same along its whole length. 



Ischium of second legs 7,3-times, the merus which is one-fifth longer, 8,3-times as long 

 as wide. The five segments of the carpus which is 1,45-times as long as the merus, are 1,56 mm., 

 0,26 mm., 0,23 mm., 0,26 mm. and 0,44 mm. long; the first segment, as slender as the merus, 

 being 8,6-times as long as thick at its distal extremity, is 1,3-times as long as the sum of the 

 four following; the second and the fourth segment that are a little longer than the third, 

 measure just one-sixth the length of the first and the fifth is about one and a half as long 

 as the fourth. The second segment is one and a half as long as thick. The chela is twice as 

 long as the fifth segment, the fingers are one-fourth longer than the palm, which is one and a 

 half as long as wide. 



Following legs very slender. Ischium of third legs 6-times as long as broad, with a spine 

 at the proximal and another near the distal extremity. Measurements of the three following 

 joints: merus 1,56; carpus i; propodus 1,34. Merus 10, 6-times as long as wide, carpus 8, 8-times 

 as long as thick at its distal extremity, propodus 14-times as long as wide, with 4 short 

 spinules along the posterior margin and 2 longer spinules at the distal extremity. Dactylus a 

 little more than one-third of the propodus, almost straight, slender, 8-times as long as thick 



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