398 EUDERMA. CORYNORHINUS. 



Sub. Fam. II. Plecotinae. 



103. Euderma. 



3—3' I— I 2-2 3—3 •' 



*Euderma. H. Allen, Proc. Acad. Nat. Scien. Phil., 1891, p. 467. 

 Type Hisiiottis maculatus, J. A. Allen. 

 Hisiioius, J. A. Allen, (nee Gerv.) Bull. Am. Mus. Nat. Hist., 



1891, p. 195. 

 Ears very large, joined across forehead; posterior base of tragus 

 united with external basal lobe. No glandular swellings on face. 



585. maculata. {Histiotus), J. A. Allen, Bull. Am. Mus. Nat. Hist., 

 1891, p. 195. 



Type locality. Near Piru, Ventura County, California, mouth of 

 Castac Creek. 



Geogr. Distr. Known from type locality only. 



Genl. Char. Size large; ears about three-fourths as long as 

 forearm. Skull: thin and papery; facial portion narrow and pointed; 

 brain case quadrate, above flat, frontal border elevated; forehead 

 depressed; bullae very large, equalling one-third length of skull; teeth 

 small and weak. 



Color. Above, the hairs black to base; patch on shoulders and 

 rump white; posterior base of ears, throat and sides of fore neck 

 white, hairs dusky at base; ventral surface white, black bases of hair 

 showing through; ears and membranes light brown. 



Measurements. Total length, no; tail vertebrae, 50; tibia, 21; 

 foot, 9; forearm, 50; thumb, 6.8; longest finger, gi; width of ear, 22; 

 tragus, 13; greatest width of tragus, 5. 



104. Coryiiorliiniis. 



I. ?=£• c. i='; P. ?=?; M. fc^= 36. 

 3-3' i-i' 3-3' 3-3 -' 



Corynorhinus. H. Allen, Proc. Acad. Nat. Scien. Phil., 1865, p. 173. 

 Plecoius, LeConte, (nee Geoff.) McMurt. Cuv. Anim. King., 1831, 



I, App., p. 431. 

 Synotus, H. Allen, (nee Keyserl. & Blas.)Mon. N. Am. Bats, 1864, 



p. 62. 

 Ears large, joined across forehead, tragus free from external 

 lobe; thick ridge ending in club shaped enlargement between the eye 

 and nostril. Skull slender, arched; rostrum, small, weak. 



*Skull having been lost, I regret I am unable to give a figure to illustrate this genus. 



