122 LATHRIDIID^. 



comprise only two British species, M. transt'ersalis and M. distinguenda ; 

 our other species must be placed as a section of Corticaria, and it is to 

 this section that the two new species described by Dr. Sharp belong ; 

 with regard to the first, C. lainhiana, it is interesting as being the most 

 highly developed species belonging to the section Corticarina as regards 

 the tarsal structure, but the least developed as regards the tibial 

 denticle of the male (which is almost obsolete). C. fowleriana^ on 

 the other hand, departs from its immediate ally, G. fuscula, and 

 approaches Melanophthalma in the form of the head, there being a 

 well marked interval between the back of the eye and the constriction 

 behind it." 



C.lambiana, Sharp (Lc. lOG). Closely allied to C. similata, Gyll., 

 but rather smaller (our C. similata average ^ mm. in length), with 

 shorter, more oval elytra, more transverse thorax, much shorter legs, 

 and finer sculpture and pubescence on the elytra ; the first joint of 

 the tarsi is in each sex thicker, and the second joint is inserted so 

 far back on the first joint that it scarcely projects beyond the end of it, 

 and the tarsi appeal's to be two-jointed. In the male the anterior 

 tibire are denticulate, but the little tooth is placed so much at the back 

 of the tibia (as in C truncateUa) that it is, on account of this, and the 

 small size and short tibia, very difiicult to detect, whereas in the male 

 of C similata it is veiy conspicu.ous. L. 1|- mm. 



New Forest, 1908 and 1909; found on an oak tree; it was first 

 discovered by Mr. C. G. Lamb, of Cambridge ; it occurred in company 

 with C. similata; the latter very rare species has been taken recently 

 by Mr. Champion at Woking and by Dr. Sharp in Scotland as well as 

 in the New Forest ; in the latter locality it has only occurred on the 

 oak, but at Nethey Bridge, X.B., it was taken by Dr. Sharp from the 

 spruce fir. C. lamhiana, however, has only as yet occurred on the 

 one small oak tree on which Mr. Lamb originally discovered it. 

 Subsequently recorded by Mr. Champion from Seaton, Devon. 



C. fowleriana. Sharp. {I.e. 108). Allied to C. fuscida, but 

 moi'e convex, with a longer and more coarsely punctate thoi-ax, and 

 remarkable for the coarse sculjDture of the elytia, their convex inter- 

 stices, and their more highly developed setosity. The legs are stouter, 

 with thicker tarsi, and the eyes are moi-e distant from the thorax as 

 they are not close to the constriction that forms the neck of the head. 

 Dr. Sharp says that after the examination of a long series of the 

 varieties of C. fuscida he feels certain of the distinction of the form, nor 

 does he believe that it can be referred to the rare variety of C. fuscula, 

 found in Lapland by Sahlberg and described by him (Notes Fauna, 

 Flora, Fenn. xi. 1871, p. 359) as C. Zrt^?}?e?mis, as, although approaching 

 it by having moi^e convex interstices on the elytra, and by the shorter 

 and more developed setosity, it differs considerably in other particulars, 

 especially as regards the head and thorax. L. 1| mm. 



Braemar, June 1871. One specimen taken by Dr. Sharp ; it is the 

 example referred to by me (Brit. Col. iii. 294) as a variety of C. similata, 



