52 COLEOPTERA. 



25. Mycetoporus nanus, Grav. Mon. 28, 8 (Tachinus) ; 

 Erichs. Gen. et Spec. Staph. 286, 7 ; Kraatz, Ins. 

 Deutschl. ii. 463, 10; E. C. Rye, Zool. 8612 (1863); 

 T. J. Bold, Zool. 8852 (1863). 



A single example of this species was detected by nie amono; 

 ^ovae Brachelytra taken near Croydon by Mr. Haward, and 

 four others were soon afterwards taken by Mr. Bold (who, 

 I believe, also made out the species) on the sea-shore near 

 Hartley ; it is also in Dr. Power's Collection. 



It resembles 31. annularis, but differs from that insect in 

 its shorter elytra, which have an accessory row of punctures 

 commencing at the apical margin and running upwards for 

 nearly their whole length, parallel to the dorsal row and be- 

 tween it and the sutural stria; the joints of the antennae also 

 are not so transverse. 



From M. clavicornis it may be known by its more parallel 

 shape and much narrower antennae, also by its abdomen 

 being less strongly punctured, by the large punctures on the 

 anterior part of the thorax being closer to the front margin, 

 and by the accessory stria above mentioned. 



Neither of these three species have any oblique punctures 

 on the side of the disc of the thorax, although angulmns is 

 placed by Fairmaire (Faune Franc, iii. 493, 5)' in a section 

 supposed to possess them. 



The full colour of 31. nanus is black, with the apex of 

 the elytra rufo-testaceous, but it seems to vary considerably, 

 having sometimes the thorax and elytra pitchy, rufo-piceous 

 or testaceous, with the head darker. 



The specimen taken by Mr. Haward is one of these va- 

 rieties, but all the others I have seen are of the normal 

 colour. 



The accessory row of punctuations also seems to vary 



