1915.] IQl 



Triclieloplioms was established by Kuwert. for a combination of 

 the Empleuri, Eutriclielophorus, and the genus to which I propose to 

 hniit the name. It should not then have been proposed, as Empleurns 

 was available. It is unnecessary to enter on a full consideration of 

 Kuwert's confusion, further than to say that it probably arose from 

 his not having- consvilted Hope's work in which Ew/plev,rus was 

 established. Probably there are some who will consider that the 

 name Trichelnjjhorus should be abandoned altogether, but I prefer to 

 retain it in a restricted sense with alternans Gene, as the type. It is 

 well distinguished by the characters I give above. T. oscillator is 

 exceptional on account of tlie epipleural structure approaching that of 

 Meghelophorus. 



1. Trichelophorus alternans, Gene. 



This species is one of the commoner of \\\e HelopJwrini in 

 collections, and exhibits a good deal of variation. As found in 

 England, it is a rather large form, about 4 or 5 mm. long, the elytra 

 of a fuscous-yellow colour, much spotted with black and with rather 

 numerous paler marks, the alternate interstices are a little elevated, ' 

 the sixth rising into a strongly marked callosity at the shoulder which 

 quite conceals the true humeral angle ; these interstices bear numerous 

 short, erect, stiff setae, and the lateral margin is rather strongly directed 

 outwards, and it also is setose. The front of the pronotum is slightly 

 emarginate behind the eyes, and the anterior angles are a little promi- 

 nent, though very obtuse and rounded ; the disc is broadly metallic, 

 but the sides are yellow, and this yellow coloration extends along the 

 front more or less distinctly all the way across ; the seven grooves can 

 all be distinguished, though only the median one and the sub-median 

 are definite, the whole surface of the pronotum is uneven, and the 

 raised portions bear a scanty pubescence ; the lateral margin is a little 

 turned upwards and is ciliate, but a little behind the front it ceases, 

 and a vague transverse depression extends towards the middle, 

 marking off the amount of prominence of the anterior angular portion. 

 The under-surface is black, with the sides of the prothorax and the 

 abdomen yellow. 



In the south of Eui'ope the colour is usually paler, so that the 

 black marks on the elytra are more distinct, the pale marks more 

 indistinct. The size of the punctures on the elytra varies much, as 

 does also the amount of elevation of the interstices, which, however, 

 is nearly always gi-eater than in the English examples. The grooves 

 on the thorax also exhibit a good deal of variation. In the Guadarrama 



