071 the British Species Cissidce. 207 



black, or pitchy-black, and but moderately glossy ; legs and 

 antennas rufo-testaceous ; head depressed in front, and with a 

 shallow fovea in the middle, finely and rather sparingly punc- 

 tured ; clypeus somewhat produced, and, in the male, with two 

 angular tubercles ; thorax narrowly margined at the sides and 

 behind, distinctly punctured, the punctures moderately dense ; in 

 the male with two tubercles in front, separated by a depressed 

 (slightly concave) interspace. Elytra with the punctures scarcely 

 stronger than those of the thorax, but less numerous; the scales 

 or setae scant, and scarcely visible even with a powerful lens. 



The male of the present species is readily distinguished by its 

 bi-tuberculate thorax ; the female, through its shorter form, and 

 the narrowness of the reflected lateral margin of the thorax, could 

 not be confounded with C. Alni ; whilst, when compared with 

 C. nit'idus, it would immediately be separated by the more distinct 

 and defined punctuation of the elytra : here the punctures are all 

 alike, whilst in C. nitidus there are excessively fine, and larger, 

 punctures intermixed; moreover, C. hidentatus is rather larger, 

 (1| line), and less glossy than C. nitidus, which is usually about 

 1 line, or rather less, in length. 



In Boleti, on the ash, at Southend, and in Windsor Forest, 

 &c., Sec. 



10. Cis nitidus, Herbst., Fab.; Gyll. iii. 382; Mellie, 1. c. 

 325, 33, pi. 3, f. 7. 



Oblong, convex, glossy, and "usually of a deep chestnut colour; 

 legs and antennae testaceous — the latter with the club dusky; 

 head very slightly convex, the clypeus in the male rather obso- 

 letely bidentate : thorax very narrowly margined at the sfdes and 

 behind ; rather thickly and finely punctured ; elytra with 

 exceedingly fine punctures, and larger interspersed punctures, 

 the latter having a tendency, in some specimens, to form rows. 



I have found this species in the New Forest, and in Windsor 

 Forest ; and I have received it from Scotland. I took specimens 

 of this insect many years back. 



I have now to notice three species which have been separated 

 from the genus Cis by M. Mellie, chiefly on account of the struc- 

 ture and, more especially, the number of the joints in the antennae. 

 Those with nine joints to the antennae form the genus. 



Ennearthron, Mellie (1. c. p. 361), which is = Entypus of 

 Redtenbacher (Faun. Austr. Ed. 1849, p. 350). 



