420 Mr. W. L. Distant on Pentatomin£e. 



blunt nearly median eminence. The lower and more newly 

 formed portion of the dental plate is marked with less distinct 

 transverse furrows, which gradually become more closely 

 approximated near the inner margin. The greater part of 

 the fossil is broken away from the matrix, thus exposing its 

 iimer face (fig. 2 a). This is roughened by small irregular 

 ridges radiating from the attenuated outer end to the com- 

 paratively wide inner margin. 



Compared with tins new fossil all the European species of 

 Dehodus hitherto known are very small and readily distin- 

 guished both by the shape of the dental plate and its super- 

 ficial furrows. Nor do any forms of Dehodus from the 

 Carboniferous of North America appear to resemble very 

 closely the specimen now described *. Perhaps JJeltodus 

 propinquus, from the Coal Measures of Illinois, exhibits most 

 similarity, though this is marked by slight cross-grooves 

 cutting the transverse furrows, while its hinder wing is more 

 distinctly defined. The dental plate from the Yoredale Rocks 

 of North Yorkshire may therefore be regarded as the type of 

 a new species, Dehodus Cro/toni, named in honour of its 

 discoverer. 



EXPLANATION OF PLATE X. Figs. 2, 2 a, 2 b. 



Fig. '2. Deltodus Croftoni, sp. u. ; hinder left lower dental plate, oral and 

 attached (2 a) faces and postero-lateral mar-jin (2 6), three- 

 quarters uat. size. — Lower Carboniferous (Yoredale Rocks); 

 Blackthorn Farm, Long Preston, N. Yorkshire. [British Mu- 

 seum, no. P. 8697.] 



«., antero-lateral margin ; i., inner margin ; i^., postero-lateral margin. 



LVII. — Rhynchotal Notes. — IV. Heteroptera : Penta- 

 tominse {part.). By W. L. DISTANT. 



[Concluded from p. 397.] 



Genus Brachycoris. 

 Brachycoris insignis^ sp. n. 



Head and pronotum black, very coarsely punctate and 

 rugulose ; head with two small central spots near base and 

 jjronotum with three transverse spots near anterior area ochra- 

 ceous. Scutellum ochraceous, sparingly but coarsely punctate 



* For complete bibliography see Catal. Foss. Fishes Brit. Mus. pt. i. 

 (1889) pp. 195-201. 



