1905.] 135 



6 mm. ; from head to tip of wings 10 mm. It is of quite the ordinary Noctiiid 

 sliape, cylindrical and of tolerably even thickness, hlunt at head and tanering 

 rapidly to anus from about the 7th abdominal segment, the taper from '1th to 7th 

 being very gradual. 



In colour it is of a rich red-brown wilh ])olished surface, which is somewhat 

 thickened and deeply but smoothly ))itted on the dovsul anterior I'idges of 5th and 

 »)th abdominal segments, this character being slightly in evidence on the Ist and 4th 

 abdominal segments as well. The colouration is much darker on these raised dorsal 

 ridges. A few of the setse on each segment are easily made out, notably iv and v 

 and one of the trapezoidals, doubtless in a fresh specimen all would be traceable. 

 The spiracles are small and somewhat raised, and the sexual organs thougli smooth 

 are distinct. There is some tendency to a dorsal keel on the thorax, but probably 

 this has been much accentuated owing to the shrinkage. The eyes are large and 

 prominent. On either side of the labrum is a small raised process, but this is 

 apparently only a corner of the eye cover, as there are no signs of a suture separa- 

 ting it off from the remainder of the cover. A small, narrow central slip beneath 

 the labrum represents the labial palpi. On either side of this are the maxillae, very 

 large at their base and extending to the tips of the wings. The antennae cases are 

 much raised (? owing to drying), they do not quite reach to the tip of the wings, 

 just outside these the covers of the second pair of legs extend to tips of wings, and 

 inside these again are the covers of the first pair of legs reaching to within about 

 one-third of the ends of the wings. There is also a small and very narrow slip 

 between these last and the maxillae sheaths, probably a portion of the cover of iirst 

 femur. A narrow slip of the hind-wing is traceable as far as the spiracle on the 

 third abdominal segment." 



Dovercourfc, Essex : 



February 1st, 1905. 



TRIPLAX BICOLOR, Gyll., A SPECIES OF COLEOPTERA NEW TO 

 THE BRITISH CATALOGUE. 



BT KICHA.ED S. BAGNALL, P.E.S. 



{Concluded from page 87). 



The synonymy of this species has been terribly confused, ap- 

 parently owing to the fact that authorities have copied statements 

 from one another without taking the trouble to confirm their accuracy. 

 Prof. Beare kindly undertook to unravel the tangle, and he has sup- 

 plied me with the following notes on the synonymy. 



Marsham, in his " Entomologia Britannica " (1802), vol. i, p. 

 122, described a new species under the name T. bicolor. Apart from 

 the fact that, as usual, the description is so meagre that it will fit 

 several of the species, we have authentic proof that this insect was 

 only T. cenen. (There are in the Stephens' collection of Goleoptera in 

 the British Museum two specimens, which are simply eenea, marked 

 Marsham's types, and standing under the name bicolor.) 



