128 
Psyche 
[September 
nizable, but it is clear that one distinct, intermediate sub- 
species is undescribed. I propose to call it 
Brachyonychus sublaevis medius n. subsp. 
Generally similar in form, appearance, and most struc- 
tural characters to typical sublaevis Chd. ; dull black, each 
elytron with a somewhat irregular, slightly transverse, 
yellow or reddish-yellow blotch behind the humerus (from 
the outer side of interval 2 or 3 to and including interval 
9) and another before the apex (from intervals 3 to 7 in- 
clusive) ; elytra lightly striate, the striae finely punctulate ; 
elytral intervals punctate and pubescent except in a small, 
poorly defined discal area at and behind the middle and in- 
cluding the first 2 intervals of each elytron — actually the 
transition from impunctate to closely punctate areas in- 
volves several additional intervals. Length (in straightened 
individuals) 23-27 ; width about 10-12.5 mm. 
Holotype $ (dissected) (U.S.N.M.) and 10 paratypes 
(6 in U.S.N.M., 3 in M.C.Z., 1 in British Museum) from 
Trang (“Trong”), Lower Siam, not dated, collected by 
W. L. Abbott; and 3 additional paratypes (2 in U.S.N.M., 
1 in M.C.Z.) from Kao Chong, Trang Pen (insula), Siam, 
1,000 ft. altitude, VIII (19)33, collected by Hugh M. Smith. 
This new subspecies is sufficiently compared with pre- 
viously known forms above. 
