THE SPECIES OF AEGLA — SCHMITT 509 



present as a slight emargination at the anterior end of the crest in 

 the type of our subspecies and to an even less degree in the largest 

 of the Hassler specimens without locality data; in the latter the 

 crest, though somewhat scabrous, is virtually entire-margined. 



Holotype and material examhied. — Of this subspecies I have but 

 two reasonably well developed specimens. The first to come to my 

 attention was included in a small lot of A. papudo taken by the 

 HassUr at Talcahuano, Chile (M. C. Z. No. 10480). This specimen 

 has been made the type of the subspecies; it measures 23.0 mm. in 



Figure 62. — Aegla laevis talcahuano, new subspecies, male holotype: a, Dorsal view (the ros- 

 trum is actually slightly distorted, compare pi. 28, B; it has been symmetrically rendered 

 here by the artist); b, lateral view of anterior portion; c, sternum of third and fourth tho- 

 racic somites; d, inner ventral margin of ischium of left cheliped; e, lateral view of second 

 abdominal epimeron. a, b, natural size; c-e, twice natural size. 



length of carapace and rostrum taken together. The second specimen 

 (a shade more than 23.0 mm. long) is the largest of three males also 

 secured by the Hassler Expedition (M. C. Z. No. 10483). It lacks 

 locality data; the second and third specimens of this lot are 

 respectively 17 and 14 mm. long. 



Remarks. — It is with some hesitation that I have here proposed 

 this subspecies of Aegla laevis., for, in the light of my studies on the 

 several forms of Aegla occurring east of the Andes, those from their 

 western slopes do not seem to be either as well marked or as sharply 

 defined, except of course A. denticidata and A. papudo. More and 

 better material from Chile, especially from the vicinity of Santiago, 

 Talcahuano, and Corral, is much needed to properly evaluate A. 

 laevis and the forms that stand nearest to it. 



Distribution. — ICnown only from the type locality, Talcahuano, 

 Chile, and the one small lot of Hassler specimens without locality 

 data. 



