Coleopterous Sulfamily Dynastinas. 153 



form are known ; but tlie difficulty is not less if the latter is 

 treated as a distinct species, for I know of no instance of a 

 species with very highly developed male armature of which 

 amongst numerous examples none of low development are 

 found. 



In Rcdtenbacher's description of the isolated and interesting 

 insect named by him Mynna pfeifftri the length is given as 

 47 lines, apparently a misprint for 17 lines. The series in 

 the British Museum vary from 28 to 35 mm. long. 



It is worthy of notice that in this peculiar insect the front 

 claws of the male assume a form which, so far as I know, is 

 unique. They are very strong and broad and double at the 

 tip, but instead of one claw only being cleft into two sharp 

 points, as is not unusual in certain groups of Dynastinse, the 

 true tip of each claw forms a slight finger-like process, while 

 the lower division is a rounded lobe or flange. The entire 

 inner surface of the claws, as in many other species, is 

 covered with fine oblique striations. 



This interesting Oriental insect has a striking resemblance 

 to the Tropical American Megasoma. A marked dilterence 

 between them is in the development of the prosternum of 

 Myrina. The latter name being a doubly preoccupied one, 

 I propose to substitute for it 



Allomyrina, nom. nov. 



The insect called by Fairmaire Orydes melanops in the 

 Ann. Soc. Ent. France, 1881, p. 258, is entirely ditferent 

 from the real Oryctes melanops of Burmeister, which, as 

 Ilerr Prell has suggested to me after comparison of a long 

 series of specimens, is probably only a variety of Haplo- 

 scapanes barbarossa, F. Fairmaire^s insect is a Tricho- 

 yomphus very closely related to T. semmelinki, Ptits., and for 

 the sake of clearness it seems desirable to name it. It may 

 be called 



Trichogomphus fairmairei, sp. n. 



It is rather shorter and stouter than T. semmelinki, with 

 the prothorax more transverse, but the puncturation is 

 almost exactly the same. The only male specimen in the 

 British Museum, like that described by Fairmaire, seems to 

 be of low development, although this is possibly chai'ac- 

 teristic. The cephalic horn is short and simply acuminate, 

 and the pronotnm bears only a slight double median promi- 

 nence and an acute lateral tubercle on each side of the 



