THE SPECIES OF AEGLA — SCHMITT 491 



were formed by the merging of two spines of normal size to form one ; 

 usually most traces of the double nature of this large anterior spine 

 are lost except as evidenced by its noticeable breadth as in the case 

 of the spine on the right carpus of the type, which is only most 

 obscurely 2-pointed; nevertheless, there are instances, as on the left 

 carpus of the type, that reveal very clearly the double nature of this 

 thickened first spine with a distinctly twinned or 2-spined extremity ; 

 in the interval between the base of this thickened first spine, the 

 base of the carpal lobe, and the anterior portion of the carpal ridge, 



d 



\y 



Figure 56. — Aegla odehrechtii paulensis, new subspecies, male holotype: a. Dorsal view; 

 h, lateral view of anterior portion; c, sternum of third and fourth thoracic somites; d, 

 inner ventral margin of ischium of left cheliped; e, lateral view of second abdominal 

 epimeron. a, h, natural size; c-e, twice natural size. 



there may be two or three very small, slightly tubercular scabrosities ; 

 the carpal lobe itself is scabrous, bluntly rounded to subacute. Upper 

 longitudinal margin of merus armed with at least two strong spines 

 of good size followed by several smaller ones; in advance of the 

 anteriormost, the largest spine, on the actual anterior margin of the 

 merus is a low, lobular, subrectangular ridge, longitudinally oriented. 

 Armature of the inner margin of the ventral surface of the ischium 

 very like that of A. odebrechtii, a fair-sized, stout, conical spine at 

 anterior end with usually two subequal, somewhat smaller ones close 

 together at posterior end, often a fourth still smaller spine in the 

 interval between the posterior pair and the anterior spine; only 

 exceptionally is there only an anterior and one posterior spine or 

 only one intervening one (as in fig. 56, d). 



Anterior dorsal angle of epimeron of second (in lateral view, 

 apparent first) abdominal somite in general more or less rounded off, 

 as in J., odehrechtii. 



Holotype.— T\\Q next to largest male, U.S.N.M. No. 80023, of a lot 

 of 4 males and 3 females collected by Dr. Doris M. Cochran at iUto 



