386 Mr. G. Lewis on 



not punctate. The female differs in tlie head being wider, 

 the frontal dentation merely remaining in outline, and the 

 thorax has coarse and rugose protuberances witiiout hair in 

 the place of horns. In some small males the thoracic horns 

 almost disappear, but a nodule with red hairs indicates their 

 places. 



Hab. Hakone and Nikko. Common in boleti on beeches 

 in May. 



Atasthalus bellicosus, sp. n. (PI. XIII. fig. 4.) 



Breviter ovalis, nigro-brunneus, rugose sculpturatus ; fronte baud 

 dentata ; thorace cornibus duobus elongatis subparallelis vel 

 parum obliquis. 



L. 7-9 mUl. 



Shortly oval, dull blackish brown ; the head rugose, punc- 

 tate, frontal margin arched in outline, edge roughened, not 

 dentate ; the thorax lirate and arched at the sides, surface 

 rough with frequent tubercles, two median horns, sometimes 

 parallel to each other, sometimes obliquely turning inwards, 

 projecting in well-developed specimens half their length 

 beyond the head, apices with tufts of red hairs ; the elytra 

 with tubercles on the third and fifth interstices well marked 

 and not irregular, seventh interstice with tubercles less 

 defined, between the tubercles are irregular rows of punctures ; 

 the antennae and legs dull brown, tibire carinate, narrowed 

 near the tarsi ; the last segment of the abdomen is coarsely 

 punctate. The female is similar to the male, except that the 

 thoracic horns are represented l)y large protuberances. Some 

 examples are densely squamous. 



A small variety or species, A. incurvatiiSj occurs very 

 commonly, in which the horns of the male are short and 

 incurved ; if they touched a circular space would be enclosed. 



Uab. ]\liyanosliita, Hakone, Chiuzenji, Nikko, and Xishi- 

 mura. Occurs, like the last species, in large boleti, but is 

 ajjparcntly more widely distributed. 



[Xote. — Atast/ialus taprobano'j sp. n. 1 obtained a sj)ecies 

 very similar indt-'cd to A. bellicosus in Ceylon ; but the male 

 may be known by the frontal carina being raised and ilonti- 

 culate, the ocular ridge being more prominent, the punctuation 

 under the thoracic horns is distinct, and the horns are more 

 than half as long again. The female has the thoracic protu- 

 berances wider apart, more erect, and more regularly covered 

 with tultcrcles. There arc specimens in the Hates collection 

 taken by iSietner. 



