4.'')6 Mr. T. 1). A. Cockerell on Fossil Arthropods 



a strong sharp sulcus, but no distinct row of punctures 

 niesad of it ; disc with eight strong strise, beset with 

 small round rather weak punctures tliroughout, about 

 7 punctures to a mm. On middle of elytron three striie, 

 with two intervals, go in 2 ram. transversely. The two 

 outer discal striae run to the apex, converging near it, as also 

 do the two inner, but the tour middle ones unite in two 

 pairs, thus terminating, the outer pair 3 mm. and the inner 

 pair 2 mm., before the apex. There is no basal incomplete 

 stria, nor any sign of specialised discal punctures. The 

 strise, with their punctures, resemble those of Mario, but the 

 fossil is easily separated from that genus by the absence of 

 s})ecialised submarginal and discal punctures. 



Bartonian, Bagshot Beds ; Bournemouth (J. S. Gardner). 

 British Museum, 19010 with reverse ( = typej, 19009, 19012, 

 19011, 19019 with reverse, 19013. 



The type of Carabites, Heer, is an elytron 3*5 mm. long, 

 from the Lower Lias of Switzerland. Our insect is of course 

 not congeneric, but Scudder used Carabites in a general 

 sense for Caral)idaj not referable to a known genus, and I 

 follow him in this usage, to avoid giving a new generic name. 

 I do not know a living genus to whicii C. gardneri may be 

 referred, but I am not familiar with more than a small 

 fraction of the numerous genera. 



o 



Elateridse. 

 Elaterites murchisoni (Giebel). 



Elytron as preserved 14 mm. long, the actual length was 

 probably at least 15 mm. ; width -I'S mm. ; nine longitudinal 

 lines of small round punctures ; near the apex 10 punctures 

 in 2 mm. of length, and three rows in 1 mm. transversely; 

 on middle of elytron two rows in 1 mm. The shape of the 

 elytron is about as in Ayriotes, the apex forming a large 

 angle. The punctures are about as in Pyrophorus, but those 

 in the apical field are stronger, although the insect is not so 

 large. 



Lower Bagshot Beds, Corfe Clay ; Creech, between Corfe 

 and Wareham, Dorset (P. B. Brodie). Brit. Museum, 1899G. 

 From W. R. Brodie (No. 17). 



Tins is the type-specimen of Elaterium murchiso7ti, Giebel, 

 1850, based on Wcstwood, Proc. Geo). Soc. Lon<loii, 1851', 

 p. 395, plate IG. f. 34. It has quite typical Elaterid sculp- 

 ture ; but the type of Elaterium is E.pronaus, Westw., from 

 the Purl)eck, which has elongated punctures and, as Hand- 

 lirscli remaiks, is surely not congeneric. Elaterites, llccr 



