68 REPORT— 1889. 



In the 'Bullet. Amer. Mus. Nat. Hist.' vol. i. No. 8 (1886), pp. 343, 

 344, Prof. R. P. Whitfield describes two species of Bibeiria (B. compressa, 

 pi. 33, figs. 3-5, and B. ventricosa, figs. 1 and 2), and refers them "with 

 some doubt to the Geratiocaridce (Phyllocaridce, Packard), as having the 

 shell bent double, but not hinged. 



In R. Etheridge's ' Catal. Pateoz. Fossils,' 1888, this genus is placed 

 with the Conchifera (Anatinidse) at p. 109, and with the Gasteropoda 

 [Calyptr£eid« ?] at p. 549, as indicated by Barrande also. 



[We do not know of any Phyllocarid having the internal structure 

 which is sbown by the casts of Biheiria.'] 



XIV. Proricaris. — Proricaris MacHenrici,^ B^'ilj) referred to in our 

 First Report ^ (for 1883) as ' Protocaris, Baily, 1872 (not well known),' 

 has now been carefully examined by us. The several specimens from the 

 Upper Old-Red- Sandstone of Kiltorcan, co. Kilkenny, on which the 

 genus and species were established by the late Mr. W. H. Baily, have 

 been kindly lent to us, by favour of Dr. B. Hull, Director of the Geo- 

 logical Survey of Ireland. 



Mr. Baily had courteously given us a pencil sketch of the form which 

 he considered that Proricaris would show if the fragments were pieced 

 together — namely, a subquadrate cephalothorax (as seen sideways), in- 

 dented in front, and boldly curved behind, and eight abdominal segments, 

 tapering rather rapidly to the last, which might have been furnished, he 

 thought, with caudal spines. We find, however, that most probably the 

 part taken for the cephalothorax is a detached joint of one of the 

 swimming feet of Eurypterus or Pterygotus,^ and that other parts of such 

 limbs, as well as portions of the body-segments of the same kind of 

 animals, supplied the material for the supposititious body of Proricaris. 



Addenda, 



I. Kolmodin's Leperditia megalops, ' Bidrag till Kannedomen om 

 Sverges Siluriska Ostracoder,' 1869 (8vo. Upsala), p. 15, pi. -, fig. 7, is 

 also a Callizoe, like that figured by Angelin. 



IV. The EcJiinocaris from Devonshire has been described and figured 

 in a paper on some Devonian Bntomostraca, by Prof. T. R. Jones and 

 Dr. H. Woodward, in the ' Geological Magazine ' for September 1889, as 

 E. Whidbornei, page 385, pi. 11, fig. 1. 



XII. Robert Etheridge, Esq., junior, has figured and described in the 

 ' Memoirs of the Geological Survey of New South Wales ; Palfeontology, 

 No. I : The Invertebrate Fauna of the Hawkesbury-Wianamatta Series 

 of NS.W.' 1888 (fol. Sydney), Estheria Coglani, p. 6, pi. 1, figs. 1-5, 

 and Estheria (?), sp. loc. cit. figs. 6-10. 



' Referred to in Dr. Bigsby's Thesaurus Bei-omco-Car'boniferiis, 1878, p. 27, as 

 ' Proricaris McHcnrici, W. H. Baily, Passage-bed, U[pper Devonian], Kiltorkan, co. 

 Kilkenny, Ireland; Geol. Mag. ix. p. 91 ; ' also at p. 253, as ' Proracaris MoHcnrlei, 

 Baily? LLS. [Lower Limestone Shale, including Yellow Sandstone (Ire- 

 land)?] Kiltorkan.' 



2 Report Brit. Assoc. 1884, p. 217. 



' We may notice that both of these genera are recorded as occurring in the sand- 

 stone of Kiltorkan ; Gcol. Mag. vol. ix. p. 91, 1872. 



