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disc with rows of large and well-impressed punctures, the inter- 
vals flat except every fourth which is a bit convex and more 
elevated, the surface densely clothed with moderately long 
reddish-brown pile which is inclined to’ be collected into tufts 
and somewhat vittately arranged, the vittae on the more ele- 
vated intervals being especially prominent. Beneath, the body 
is coarsely closely punctured and sparsely finely pubescent. 
Male, length, 10 mm., breadth, 5 mm.; female, length, 12 mm., 
breadth, 6 mm. Plate I, fig. 12. 
This species is evidently somewhat related to Rhyncogonus 
depressus Sharp. and Rhyncogonous vittatus Sharp, differing 
primarily from both by being very convex, also by the color 
of the pile and its arrangement. In depressus, the pile is uni- 
formly arranged and closely appressed; in vittaius, arranged 
in series of somewhat regular vittae; while in alternatus, it 
is not only somewhat longer and coarser, but darker, and in- 
clined to be so dispersed that the covering of every fourth 
interval is more prominent. In drawing up this description, 
I have examined twenty-eight mounted specimens from my 
collection, and previously had seen several times that number, 
all collected near a swamp, at an altitude of about four thou- 
sand feet, on the island of Kauai, during June, 1919, by Mr. J. 
August Kusche. 
Type male and allotype female in my collection, also several 
others designated as paratypes, a pair of which will be de- 
posited in the Bishop Museum, Honolulu, and the California 
Academy of Sciences, San Francisco. 
