THE SPECIES OF AEGLA — SCHMITT 503 



finger to form a higher crest at the posterior end than at the anterior 

 end; posteriorly the crest is somewhat troughed or excavate with 

 sHghtly upturned margin which stands well away, almost at a right 

 angle, from the inner margin of the palm proper just in advance 

 of the articulation with the carpus. 



Carpus of either cheliped carries two longitudinal ridges, the first 

 is the usual somewliat nodulated ridge with more or less transverse 

 short rows of small corneous scales, situated above the spines arming 

 the inner margin of the carpus; the second, scarcely to be called a 

 ridge, is on the middorsal surface of the carpus. It consists of an 

 irregular, scattered row of slight elevations anteriorly scabrous. 

 Anterointernal angle of carpus of cheliped fairly blunt, scarcely sub- 

 acute, sparsely small-spinulated. Dorsal longitudinal margin of 

 merus armed with a row of corneous tipped or blunted, somewhat 

 conical tubercles which become more conically spinelike as they ap- 

 proach the distal margin of the joint; the anterior margin of the 

 merus at its middorsal point shows but a very faint indication of what 

 might have been an obsolecent swelling with one (on right merus) or 

 two (on left) small corneous denticles; in smaller specimens there is 

 more of an evident lobe or small nodular swelling at this point with 

 finely denticulate anterior margin; outward from this lobe the 

 anterior margin of the merus is in part more or less denticulated. 

 Inner margin of ventral surface of ischium with four, five, or six 

 low swellings or nodulations, of which the anteriormost is usually the 

 largest, and in occasional specimens somewhat blunt tuberculif orm ; 

 in some others this ischial margin appears no more than a little wavy 

 behind the anterior nodule or tubercle; only rarely does this seem 

 to be tipped with a tiny corneous scale. 



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

 parent first) abdominal somite produced to form an acute corneous 

 spinule-tipped angle. 



Holotype. — A large male measuring 33 mm. in length to carapace 

 and rostrum, U.S.N.M. No. 79078. 



In all, I have examined about 30 specimens of this species. Sev- 

 eral are of good size ; the majority, however, are of medium or small 

 size. All of them I collected January 13 and 14, 1927, near Con- 

 cepcion, Chile, in company with Dr. Carlos Oliver Schneider and 

 Carl Junge. 



Remarks. — A. concepcionensis keys out near A. laevk; in the "Re- 

 marks" under the latter (p. 507) the two are compared. 



In its lack of an orbital spine, A. concepcionensis stands near 

 A. papudo, in which such a spine is often not properly or truly de- 

 veloped, and A. affinis, in which it is lacking (in the unique holo- 



