40 Pi'of. J. C. Schiodte on the Tunnelling Coleopterous 



(amongst the Danish in H. sericans, intermedins, Pliysites aureolus 

 and Augyles hispidus) the arch is continued as an excessively 

 thin and sharp recurring ridge, as far as the apex of the poste- 

 rior coxee, thus completing a larger section of the circle. Inter- 

 mediate forms between this and the common structure do not 

 seem to occur. 



DANISH SPECIES. 



Heterocerus, F. 



Antennte 11 -jointed, the club abruptly separate; third and fourth joints 



very small. 

 Maxillary lobes spinulous. 

 Inner lobe of mandibles membranaceous, with membranaceous comb. 



A. Lateral angles of jjronotum rounded, without marginal groove. 

 Inner lobe of mandibles slightly emargiuate in the middle. 

 Body oblong, with parallel sides, flatly vaulted. 



Pronotmn in the male broader than the elytra, in the female of the 

 same breadth as these. 



a. Arches of creaking-apparatus ending in the posterior margin of the 



first ventral segment. 



1. H.femoralis (Kiesenw.), fr. 



b. Arches of creaking-apparatus recurring from the posterior margin 



of the first ventral segment towards the apex of the third pair of 

 coxse. 



2. H. sericans (Kiesenw.), m. fr. 



B. Lateral angles oi pronotum with deep marginal groove. 



a. Lateral angles oi pronotum roimded. 



Inner lobe oi mandibles with a sharp indentation in the middle. 

 Body oblong, with parallel sides, flatly vaulted. 

 Pronotum in the male as broad as elytra, in the female narrower. 

 Arches of creaking-apparatus ending in the posterior margin of the 



first ventral segment. 

 3. H. obsoletvs (Curt.), fr. 4. H, Icevigatus (Panz.), m. fr. 



5. H.fusculus (Ksw.), fr. 



b. Lateral angles oi pronotum pointed. 



Body oblong, rounded, rather high vaulted, almost the same in both 

 sexes. 



* Arches of creaking-apparatus ending in the posterior margin of 



first ventral segment. 



6. H. marginatus, Ksw. 



* Arches of creaking-apparatus recurring towards the posterior coxae. 



7. H. intermedins, Ksw., r. 



Phyrites, nov. gen. 



Antennce 11-jointed; the club increasing gradually from the third joint. 



Maxillary lobes spinulous. 



Inner lobe of mandibles bifid, the lower division membranaceous, with 



membranaceous comb, the outer division horny, with fringed margin, 



and carrying five or six very thick horny spines. 



1. P. aureolus, n. sp. (Oblong, rounded sides, highly vaulted; hairy 



