300 Mr. D. Sharp's revision of the 



of extending for the greater part of its length, as they do 

 in T. crassicornis. 



Found in company with a black ant at Futai, Sept. 

 20th, 1881. 



Tmesiphorus costatus, Weise. 



Weise, Deutsche Ent. Zeit., 1877, p. 99. 



Oshiroyama, near Hagi ; found by Hiller. 



I have not seen the species, which has not been met 

 with by Mr. Lewis. 



Labomimus, n. g. 



The characters of this new genus are similar to those 

 of Lasinus, with two important exceptions, viz., that 

 joints 2 — 4 of the maxillary palpi are angulate ex- 

 ternally, and that the basal dorsal plate of the hind 

 body is remarkably elongate, fully as long as the elytra. 

 The basal joint of the antennae is elongate, and the head 

 is furnished with a very elongate prominence, the 

 antennae being inserted on the under surface of the 

 anterior part of this prolongation. The trochanters are 

 very elongate. The genus is thus a very distinct one to 

 be located near Lasinus and Tmesiphorus. 



Labomimus reitteri, n. s. 



Elongatus, convexus, piceo-rufus, nitidulus, evidenter 

 pubescens, prothorace obsolete trifoveolato ; elytris stria 

 suturali impressa, aliaque discoidali abbreviata, his striis 

 ad basin foveolatis, abdomine segmento primo dorsali 

 valde elongata, basi utrinque plicula elavata sat elongata. 

 Long. 3| mm. 



Antennas stout, dark red, very elongate ; basal joint 

 about as long as the four following together, the three 

 terminal joints forming a long slender club. Head 

 coarsely and closely granulose-punctate, opaque ; genae 

 angularly prominent beneath. Thorax narrow, longer 

 than broad, very convex, the convex disc without sculp- 

 ture, the rest granulose-punctate, an obscure fovea on 

 each side (not near the base), and a more distinct one in 

 the middle near the base. Elytra rather longer than the 

 thorax, much narrowed at the shoulders, very sparingly 



