32 Rev. H. S. Gorliam's materials for a 



side, with only their margins yellow. The seventh is so 

 short as only just to be visible ; the eighth, or apical, lobe- 

 shaped, these two being clouded. The pygidial segment 

 is diaphanous, a little clouded in its centre. In the female 

 the fifth ventral plate alone is white. This species is both 

 in general appearance and by its sexual characters 

 obviously allied to longipennis, Mots., from which it may 

 be distinguished by its much smaller size and other cha- 

 racters given above. The elytra of the female are not 

 reduced in size as in the female of that species. 



Guatemala, Calderas ; and River Sarstoon, British 

 Honduras. Coll. Godman and Salvin. 



Pyrectomena (Dej.), Mots., Leconte. 



Type, P. vitticollis, Mots. 



The species composing this genus agree in several 

 characters in which they differ from the other Photini. 

 They are depressed, and parallel in form. The thorax 

 has its sides sinuate near the apex, Avhich is often pro- 

 duced, and the sides more or less reflexed ; it is more or 

 less carinate ; the antennae are short, not much longer 

 than the head and thorax. The male has the fifth and 

 sixth ventral plates yellow and translucent, with impres- 

 sions as in certain Photini, but the seventh ventral plate 

 is in the form of a truncate triangle, the apex being 

 scarcely emarginate, and the apical or eighth plate is so 

 small as not always to be seen. The pygidial plate is 

 triangularly and deeply cut out in the male, truncate in 

 the female. Six species are referable to this genus, of 

 those already described; dorsalis, Mots., I have not yet 

 been able to identify, and it may belong to another 

 genus. 



Pyrectomena angulata, Say, Journ. Ac. Phil. v. 162. 

 America, Bor. ; Texas, coll. Gorh. ; ]\Ius. Brus. ^ , 9 . 



Pyrectomena horealis, Randall, Bost. Journ. ii. 16. 

 Michigan ; coll. Gorh. ? . 



Pyrectomena anf/ustata, Lee. Syn. 336. 

 Texas: coll. Gorh. $. 



