124 Mr. F. A. Bather on a 



tliio;ljs. Redtlish brown above, with dark brown dots and the 

 followinpf principal blackisii markings : — a blotch capping the 

 tip of the snouf, a curved band from the nostril to the eye, a 

 cross-band between the eyes, a vertical bar below the anterior 

 third of the eye, a temporal band, two oblique bands (one 

 behind the other) on each side of the body, and cross-bands 

 on the limbs ; upper lip behind the black vertical bar, flanks, 

 and lower parts white ; a black crescent at the axil and 

 another at the groin ; back of thighs colourless, black-edged 

 above. 



From snout to vent 33 mm. 



A single female species. 



This frog, remarkable for its very sliort hind limbs, appears 

 to be related to //. melanarcfyrea^ Cope, from Mato Grosso, 

 which differs in the tibio-tarsal articulation reaching the eye, 

 as well as in other respects. 



XII. — Protoscolex latus, n new ^^Wor7n^\from Lower 

 Ludlow Beds. By F. A. Bather, F.R.S. 



(rublialied by permission of the Trustees of the British Museum.) 



The genus P rotoscole.t was founded by E. O. Ulrich in 

 July 1878 (Journ. Cincinnati Soc. Nat. Hist. i. p. 89). Since 

 the paper is rare, his generic diagnosis may be quoted in 

 full :— 



" Body ranging from a medium to a great longtii, of nearly 

 uniform width throughout its length ; hotly divided trans- 

 versely by more or less narrow, simple or pajiillated segments. 

 Anterior and posterior ends obtusely pointed, and, probably 

 because the specimens are fossil, are not distinguishable 

 from each other. No setae or appendages of any kind." 



This was followed by the description of four species — 

 1\ covingtonenbis (the genotype), P. oriiains^ P. tenuis, and 

 P. sivrplex. All wiie found tfouth of Covington, Kentucky, 

 associated with the polyzoa now known as Arthrostyhis tenuis 

 (James) and Arthropora shafferi (]\Ieek), also with Serpulites 

 d/ssohdus, Billings. The stratum is now referred to tlie 

 Kcononiy formation in the Eden series, that is, Lower 

 Cincinnatian, just above the horizon of the Utica shale. 



One other species has since been described, namely, P, 

 vwgnus, by Miller and Fal)erin July 1892 {op. tit. w. p. 83). 

 This was found in the Fulion formation of the Eden series, 

 corresponding to Utiui shale, in Cincinnati. 



