160 Mr. Bridginan's additions to Mr. Marshall's 



Hemimachus annulicornis, Marsh. MS. 



? = Pezomachus juvenilis, Foerst., Mon. d. Gat. Pez., 

 136, 72, 2 . 



In the 'Entomologist's Annual,' 1874, p. 127> the 

 Eev. T. A. Marshall mentions the male and female of a 

 small Pezomachus, which he took in numbers at Milford 

 Haven. I have lately had an opportunity of examining 

 these insects : the female I believe to be Pezomachus 

 juvenilis, Foerst., an insect named and described from a 

 single specimen, as the majority of Foerster's species 

 were. 



Mr. Bignell has taken this same species in plenty in 

 the neighbourhood of Plymouth, and I find, although 

 there is no variation in structure, the depth of colour 

 and the size vary much. The length given by Foerster 

 appears to be the minimum ; in a series from Mr. 

 Bignell now before me I find they vary from 2 mm. to 

 nearly 4 mm. in length ; in some instances the head is 

 nearly as light coloured as the thorax, while in others 

 it is quite dark red. The fuscous bands on the 3rd and 

 4th abdominal segments also vary in intensity. The 

 male being undescribed, I have ventured to add a de- 

 scription of it : — 



Basi abdominis, pedibus, et basi antennarum, rufis. 



Antennae long and slender, rather longer than the 

 insect ; 1st joint of flagellum about five times as long as 

 wide, 2nd rather shorter, gradually decreasing in length, 

 none exactly quadrate ; head subglobose, much wider 

 than the thorax. Thorax about one-third longer than 

 high, narrow ; mesothorax not trilobed ; upper part of 

 metathorax slightly longer than the back part ; trans- 

 verse ridge distinct, but without supero-medial area ; 1st 

 segment of abdomen somewhat elongate, gradually 

 tapering to the region of the spiracles ; from thence 

 sides parallel ; post-petiole not quite one-half longer 

 than wide. Abdomen about as wide as the thorax ; the 

 4th segment the widest ; the 2nd one-third longer than 

 wide ; the remainder transverse. The wings vary from 

 normal size to more or less abbreviated ; the neuration 

 towards the apex imperfect. 



Head black ; base of antennae more or less red or 

 piceous. Thorax pale piceous ; 1st, 2nd, and greater 



