4 



BRITISH FOSSILS. 



Angelina, advantage is taken of it to present the English reader 

 with the characters of a genus which is more common, or at least 

 better known, in Sweden and Bohemia, than in England. 



Conocoryphe belongs to the same primordial family as Angelina, 

 and differs from it chiefly in the lobed glabella. M. Barrande gives 

 the following characters.* 



[Geuus CONOCORYPHE. Cokda. (Sub-kingdom Articulala. Class Crustacea. 

 Order Trilobita. Family Conocephalida;.) " Glabella shortened, narrowed in front, 

 witli three or four pairs of oblique furrows. Axal furrows deep. Eyes (usually present) 

 reticulate. Facial suture ending within the posterior angle. A rostral shield present. 

 Labrum elongate truncate. Thorax segments 10-15, furrowed and facetted for rolling. 

 Tail entire, of two to eight segments." Barr., p. 417.] 



[Section Conocoryphe proper. Eyes large, approximate. Glabella large, well iobed ; 

 14 body rings ; tail small. Lingula flags only.] 



The other sub-geiiera, Sohnoplfjfra^ »tec., will be illustrated in 

 future decades. 



CONOCORYPHE^ INVITA. 



Decade XI. Plate VII. Fig. 6. 



Diagnosis. C. capite {adhuc solum cognoto) lati-marginato, angulis 

 brevispinosis ; glabelld urceolota, utrinque bisulcata ; oculis longis, ad 

 glabellam appressis ; cauda angustSt, axi conico A-aimiilafo. 



vSynonym. Conocephalus itivitus, Salter, in Sihiria, 2nd ed., 1859, 

 p. 47, loss. 7, fig. 1. Id. Mem. Gaol. Surv., ined. pi. 4, figs, 5, 6, 7 ; pi. 7, 

 fig. 6. 



Description. — Of the head v/e have only fragments, but they 

 show that the facial sutures converge greatly from the margin to 

 the eye, which is very long, reaching two-thirds the whole length 

 of the glabella, from the middle of the large basal lobe to above 

 the upper lobe. The glabella furrows nearly unite in the centre 

 and both pairs are very oblique, the basal pair almost meeting the 

 deep arched neck furrow. 



This species resembles so nearly E. Emmrichii, Barr., that were 

 it not for the glabella having only two pairs of furrows, the frag- 



* 1 think, much as we wish to preserve to M. Barrande all the honour of his careful 

 nomenclature, that we cannot safely use the term Conocephalus or Conocephalites of 

 Zenker, as the term has been employed in no less than three different genera of plants 

 and animals. It is better to adopt Corda's term, the more so, as it is really likely that 

 the subdivision of the genus proposed by him will be hereafter sanctioned. 



