Mr. W. Mitten's Remarks on Mosses. 51 



This species resembles T. elongata, but diflFers in colour, in the 

 head being smaller and the eyes less prominent, in the thorax 

 being more cylindrical, less cordiform, and with the central de- 

 pression less marked ; the elytra are nan-ower, less deeply and 

 less numerously punctured, and the sm-face more smooth and 

 polished. 



Myrmecoptera keta. 



Elytra with a single white mark on each, beginning just below 

 the shoulder, extending along the middle of the elytron to the 

 centre, where it gets narrower and inclines to the outer margin, 

 which it accompanies but does not quite include ; again becoming 

 broader it terminates at the angle of the suture ; puncta very 

 numerous and metallic. Also a row of larger impressions like- 

 wise metallic near to, and parallel with, the suture. Trochanters, 

 femora, &c., black. Length 6 lines. 



Hab. Abyssinia. 



This species resembles M. egregia, Germar, but is much larger, 

 the head is smaller, and the thorax is longer, narrower, and more 

 cylindrical. 



Carabus Boysii. 



Dull black. Head rather large and finely punctured ; mandi- 

 bles large ; last joints of palpi strongly securiform. Thorax cor- 

 diform and finely punctate, mth a well-defined central fuiTow ; 

 anterior margin slightly concave and raised into a border ; pos- 

 terior margin also slightly concave, sides sinuous with elevated 

 borders, posterior angles considerably prolonged backwards. 

 Elytra elongate, oval, narrower before than behind, strongly 

 striated, each stria finely punctated and each interval punctated, 

 but more coarsely; each elytron with three rows of deep and 

 regular indentations. Length 14 lines ; breadth 4^ lines. 



Hab. India. 



This species comes near to the Carabus sylvestris. 



VIL — Some Remarks on Mosses, with a proposed new Arrange- 

 ment of the Genera. By William Mitten, A.L.S. 



The author has been induced to offer to the consideration of 

 bryologists the arrangement proposed below, from an impression 

 that it may engage the attention of others more competent than 

 himself to grapple with the difficulties which continually arise in 

 endeavouring to strike out new arrangements, and whose more 

 extensive knowledge of the vegetable kingdom may enable them 

 at a glance to come to a proper appreciation of the conclusions 

 he has arrived at. 



It was in 1847, whilst examining Phascum multicapsulare of 



4* 



