486 PROCEEDESPGS OF THE NATIONAL MUSEUM vol. 91 



Holotype. — The largest male out of a lot of 14 males and 6 females 

 (1 ovig.), measuring 26 mm. in length of carapace and rostrum, col- 

 lected by J. A. Wolfsohn at Papudo, Chile, and received at the Field 

 Museum on February 3, 1925 (Field Museum No. 2285; paratypes, 

 2286). 



Remarks. — This species, because of its very strongly reflexed, 

 anteriorly concave, or excavated rostrum, very convex carapace, and 

 much-swollen hands with low thick palmar crest, stands quite apart 

 from the other species of Aegla. 



Although the dorsal anterior angle of the epimeron of the second 

 abdominal somite may rarely, and I believe only adventitiously, 

 carry a small, corneous scale or two, or even a tiny spinule, it does 

 seem that A. pa'pvdo is properly one of the group of species with a 

 rounded, unarmed dorsal anterior epimeral angle which includes 

 A. odebfechtii^ A. o. paulensis, A. Twuquensis, and A. a-fflnis. In 

 certain other respects A. papudo seems to stand not far from A. 

 concepcionensis. 



The several suture lines that meet to form the anterolateral angles 

 of the cardiac area of the carapace combine to form a short, quite 

 longitudinally oriented bar (fig. 54) . It holds for every specimen of 

 A. papudo. Otherwise, I have noticed this state of affairs only in 

 the unique holotype of A. a-fflnis (p. 496, fig. 58, a) . In all other species 

 this short "bar" is, in contrast to A. papudo and A. affinis^ oriented 

 so as to be very nearly transverse, or at least obliquely transverse. 



Distribution. — So far known only from the 20 specimens ( 14 males, 

 6 females) of the type lot from Papudo, Chile ; 3 males and 1 female 

 from Talcahuano, Chile (M. C. Z. No. 10480) and 1 male (about 

 24 mm. long) with only the indication Chile on the label, belonging 

 to the Museu Paulista, Sao Paulo, Brazil (M. P. No. 1306). I have 

 also seen a not altogether satisfactorily determinable female specimen 

 from the Kio Mapocho, near Talaganti, Province of Santiago, Chile, 

 collected by my good friend Dr. Carlos E. Porter, March 17, 1940, that 

 seems to be this species. 



Recently I had the opportunity of examining the Aeglas belonging 

 to the Academy of Natural Sciences of Philadelphia. Included in 

 that collection were three dried female specimens between 30 and 31 

 mm. in length of carapace and rostrum together, labeled '•''Aeglea 

 laevis, Chili, Dr. Wilson" (Acad. Nat. Sci. Phila., no. 484, pt.). All 

 showed the more or less longitudinal suture lines of A. papudo (and 

 A. affinis). Their anterior dorsal epimeral angles are rounded off and 

 show no trace of either corneous scale or spinule. The rostral carina 

 seems a little more prominent for a greater extent of the rostrum than 

 is the case in most of the representatives of the species I have seen 

 so far, the carina having perhaps become accentuated as a result of 



