160 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Mimors Kraepelin. 
Revis. Scolop., 1903, p. 62. 
This genus has heretofore been known from one species (M. orientalis 
Kraepelin) based upon a single specimen from China (Province 
Shensi). It was a matter of much surprise and interest, therefore, to 
find in the collection of the M. C. Z. two specimens of a distinct species 
but fully conforming to this genus in a vial with specimens of Orph- 
naeus brevilabiatus (Newport) from Rio de Janeiro. The specimens of 
Orphnaeus had been labeled O. brasiliensis by Meinert, who seems to 
have overlooked or to have failed to examine critically the smaller 
specimens of Mimops. It is, of course, quite possible that the speci- 
mens were introduced to Rio de Janeiro on ships from the East; but 
this must remain for the present uncertain. 
MIMOPS OCCIDENTALIS, sp. nov. 
The color of the types appears to have been yellowish; but because 
of long preservation the original color of the specimens cannot be 
satisfactorily ascertained. 
Cephalic plate wider than long, nearly in ratio 12:11. A little 
overlapping the first dorsal plate. Widest anteriorly, with sides | 
converging caudad; caudal margin mesally a little incurved; the 
anterior margin incised between bases of antennae. Longitudinally 
depressed in caudal region each side of middle. (Plate 1, fig. 4). 
Antennae composed of seventeen or eighteen articles, which in the 
proximal half are as wide as or wider than long, but distad become 
longer than wide. 
Anterior margin of prosternum nearly straight being but very 
weakly widely convex; bearing two moderately high, distally rounded, 
dental plates separated by a median spaces or incision which is rounded 
at bottom and is deeper than in orientalis Kraepelin. All joints of 
prehensorial feet unarmed. Claw short and stout and but little 
curved. (Plate 1, fig. 5). 
First dorsal plate with a transverse sulcus a little caudad of margin 
of head, this sulcus bending caudad at middle region. Also with a 
longitudinal furrow each side of the middle extending cephalad from 
the caudal margin and uniting at an angle with its fellow near the mid- 
dle of the plate, from where they continue as a single median furrow 
to the transverse sulcus (Plate 1, fig. 4). Other dorsal plates bi- 
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