1938 ] 
North American Nilidulidx 
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3. Apex of prosternal process emarginate strigata Fabr. 
Apex of prosternal process rounded strigatula n. sp. 
Cryptarcha ampla Erichson 
Cryptarcha ampla Erichson, 1843, in Germar, Zeitschr. Ent. 
4: 356. 
The color varies from nigro-piceous to testaceous and the 
size from 4.5 mm. to 7.8 mm. The upper surface may be 
almost glabrous. 
It has been collected at sap of maple and willow, and ex- 
tends from Quebec to Florida, west to California and Oregon. 
Cryptarcha grandicollis Reitter 
Cryptarcha grandicollis Reitter, 1875, Verh. Nat. Ver. 
Briinn, 13: 118. 
This species was described from Venezuela but is recorded 
from North America by Grouvelle, 1913, Coleopt. Cat., pars 
56, p. 179. Dr. R. Jeannel has written that there is no speci- 
men of this species in the Grouvelle collection in Paris ; so, 
until confirmed, its inclusion in the North American list must 
remain doubtful. 
Cryptarcha glabra Schaeffer 
Cryptarcha glabra Schaeffer, 1909, Bull. Brooklyn Mus. 1 : 
375. 
This rare species is remarkable for being glabrous above, 
and in having parallel sides. Since only six specimens are 
known, their data are given. Huach. Mts., Ariz. VIII. 9 in 
U. S. N. M. (type) : Carr Canyon, Huachuca Mts., Ariz. 
VII, 7-30 in Cal. Acad. Sci. ; 4050 ft., Kits Peak, Rincon, 
Baboquivari Mts., Ariz. in A.M.N.H. ; two from Baboquivari 
Mfs., Ariz., April and August in H. C. Fall collection; San 
Bernardino Ranch, 3750 ft., Cochise Co., Ariz., August in 
the writer’s collection. 
Cryptarcha strigata Fabr. 
Cryptarcha strigata Fabr., 1787, Mant. Ins. 1 : 51. 
This species is here restricted to the Palaearctic fauna. 
The North American individuals that have previously had 
