50 COLEOPTERA. 



month or so subsequently, he has found nothing but cera- 

 sorum; his conclusion being that the males and females 

 came out as a rule at different times. This would seem cor- 

 roborated by Mr. Waterhouse's collection, in which are 

 several " rubidus" and only two or three " cerasorunty' taken 

 on different occasions. One of Dr. Power's cerasorum cer- 

 tainly has the rostrum shorter than the others, as in the Brit. 

 Mus. pair : but it is possible that more latitude as to sexual 

 rostral longitude must be allowed than we are in the habit of 

 granting. 



As a counter (but not conclusive) argument against these 

 facts, it may be observed that in none of the other true' 

 Balanini is there any sexual disparity as to femoral 

 toothinoj. 



52. ToMicus Marshami, Rye, Entomologist's Monthly 

 Magazine, vol. iv, p. 187 (described) ; T. Morley, ib. 

 Ifuscus, Marsham (nee hicoloVf Hbst.). 

 Mr. T. Morley records the capture by himself, in Feb- 

 ruary, 1866, and subsequently, of several specimens of a small 

 Tomicus under bark of decayed branches of beech-trees lying 

 on the ground in a wood near Prestwich, Manchester, which 

 I am inclined to think, for the reasons stated loc. cit., are 

 very probably the T. (Ips)fuscus of Marsham, in sj)ite of 

 the declared identity of that insect with Gyllenhal's species 

 of the same name, which has been identified with hicolor, 

 Hbst. As, however, Gyllenhal's positive account of his 

 receipt from Kirby of Marsham's /^^5cws and the identity of 

 it with his own insect cannot (even if my supposition be 

 correct) be controverted, owing to the shortness of the Mar- 

 shamian description, and as I am unable to refer Mr. Morley's 

 beetle to any described species, I have named it Marshami. 



