160 



(except that it is uot quite so broad), and may be distinguished by the 

 sutural striae, which are each composed of about twelve closely planted 

 and well defined punctures. The thorax also is not so wide behind ; 

 the scuteUar spot either does not exist, or is very faintly indicated, and 

 the apical spots are more suffused towards the suture and hinder margin. 

 The apex of the abdomen is often pitchy. Specimens sometimes occur, 

 in which the dark colour is suifused nearly all over the elytron, leaving 

 only the shoulders testaceous ; in others, the entire insect is clear 

 testaceous, except the head and apex of elytra and abdomen. 



In the male the sixth segment of the abdomen beneath is very 

 slightly emarginate at the apex. 



Perhaps this is the least abundant of the three common species, 



8.— PTGM^TJs, Fab.; EricJis., loc. cit., 280, 21. 



Extremely variable in size, some specimens being as large as any 

 exoletus, and others smaller than Tachyporus Tiumerosus. From both 

 the preceding species it may be known by the finer and closer punc- 

 tuation of its abdomen, and by the sutural strise being composed of 

 only about six punctures. It is more fusiform than exoletus, and 

 usually much smaller than trinotatus. 



It varies much in colour, being either clear testaceous with the 

 head pitchy, or with the head and apex of elytra and abdomen pitchy ; 

 or with the head, entire disc of thorax, scuteUar patch, lower angles 

 of elytra, and base of abdominal segments, pitchy ; sometimes the 

 entire abdomen is pitchy, with only a thin apical margin to each seg- 

 ment testaceous. 



In the male, the sixth abdominal segment beneath has an obsolete 

 tubercle in the middle, and a slight longitudinal depression. 



NOTES ON TARSOPHLEBIA WESTWOODII, GIEBEL, A FOSSIL DEAGON-FLY. 

 BY DE. H. A. HAGEN. 



In Brodie's " Fossil insects," pi. 10, f. 8, Mr. Westwood figures the 

 basal portion of the wing of a JSfeuropteron, and says (1. c. p. 127) 

 " that he is uncertain as to the position of the insect to which the wings 

 belonged." Afterwards, in the " Quarterly Geological Journal," vol. 5, 

 he says " that the wing belonged to a rather large species allied to his 

 Heterophlehia disloeata." M. Giebel, in his "Fauna der Vorwelt," 

 p. 288, gives to this species the name of Heterophlehia Westwoodii. 

 In my palaeontological notes in the Entomologist's Annual for 1862, I 



