New and Rare Fossils. 1 75 



This is the first recorded occurrence of //. crenulatus as a fossil. 

 Except for a slight weathering of the external surface, the two 

 specimens found here are in every way comparable with the recent 

 examples in the Dennant collection, from South Australia. These 

 were obtained by Dr. Verco at Cape Borda (15 fms.); St. Vincent's 

 Gulf; and Backstairs Passage (22 fms.). 



The related //. scriptus, also found locently in Backstairs Pas- 

 sage, S.A., at 22 fathoms, was originally descril)ed by Mr. Dennant 

 from the Tertiary of Muddy Creek, and supposed by that author 

 to come from the lower beds. The i)ink. ferruginous appearance 

 of the type specimen now in the National Museum collection sug- 

 gests, however, that it came from the red limestone between the 

 Balcombian and the Kalimnan series at Muddy Creek, and about 

 which there is now evidence for believing it to be of Janjukian age. 

 The rolled examples of H. scripUis found by Dr. T. S. Hall, came 

 from the Kalimnan of Forsyth's Grange Burn. Hamilton. 



Distrihntion. — //. crenulatus occurs in Bore 11 of this presejit 

 series at 197-199 feet, associated, with Kalimnan fossils. 



OCTOCORALLA. 

 PSEUDAXONIA. 

 Fam. ISIDAE. 

 Genus MOPSEA. Lamaroux. 



MoPSEA TKNisoNi, sp. nov. (Plate XVfl., Figs. 11 «, h, \2a, h, 

 13 and 15a-c; PI. XTX., Fig. 39). 

 his sp., Tenison Woods, 1("^G2, (reol. Observations in S. 



Australia, plate facing, p. 7-3, fig. 6. 

 (?) his dactyla. Id., palaeont. New Zealand, pt. iv.. 1880, 



p. 7, pi. i., fig. 1. 

 cf. Isia sp.. Duncan, 1875, Quarr. Journ. Geol. Soc. vol. 



xxxi., p. 674, pi. xxxviiiA, figs. 1-4. 

 his sp.. Id., 1875, ibid., p. 675. j)!. xxxviiis.. fig. 4. 

 Preliminary Note. — Tenison Woods in 1880 figured and described 

 some fossil remains possibly identical with tlie above species under 

 the name of his dactyla, from Hutchinson's Quarry, Oamaru. Vnit 

 they were so badly preserved as to preclude an exact comparison. It 

 seems better, therefore, to give a distinctive name, in honour of T. 

 Woods, who actually figured this form in 1862 from the Mt. Gambler 

 deposits. In his description of the fossils, he states, amongst other 

 points, that "The condyles are convex or sub-conical, concentrically 



