572 



THE AMERICAN NATURALIST [Vol. XL 



curves sharply down on each side to the eyes. Antei'iorly. toward 

 the nostrils this archinfj is very slio;ht, (•orresi)ondinu- with the 

 decrease in width of this reo-ion. T\w crown of the head is with- 



transparent l.ri>ti.vs, from 4 t.. :. nnn. loni"! ihJt arise from dark- 

 colored pits. Tin- >u\v< of tli(- npix'r jaw fall away rather siiarply 

 from the .sunnnit of the niuz/le, doNMiuard and forward. From 

 the ncstrils, which are situate.l hioli on the h(>ad, the anterior 



• liicded a litti 



