546 MisceUaneouH. 



of some kind of siphoiiaceous alga : the cavities left by their decay- 

 were subsequently filled in by sediment under pressure. If the upper 

 surface of 0. antiqua were more resistant than the lower, this mijjht 

 account for its preservation in relief. The microscopical examination 

 of slate containing Oldhamia affords evidence of original and secon- 

 dary structures which has an important bearing on this question. 



MISCELLANEOUS. 



Golianthhnts {Sphyrorrhina) Wisei, 

 By E. A. Heath, M.D., F.L.S. 



Since publishing a description of the above, from East Africa 

 {ante. p. 397), I hare come across a description and figure of a 

 beetle described by Dr. Kraatz from the other side of the continent, 

 and named by him Fornasinivs Hauseri. This is the nearest ally 

 to my species in form, structure, and markings, from which, how- 

 ever, G. Wisei differs by Laving three shaiy outer spines on the front 

 tibiae ; the terminal spines in Dr. Kraatz's specimen are very blunt, 

 semitruncate ; the first segment of the front tarsus is nearly twice 

 as long as in my species. The markings on the thorax also are 

 quite different ; beside the three centre lines, which are somewhat 

 similar in both species. Dr. Kraatz's species has a lateral line 

 reaching from the anterior border to the middle of the thorax, and 

 a line on both outer borders of the thorax from the base of the 

 head, where it joins the last-mentioned short lines, to the shoulder 

 of the elytra ; my species is quite devoid of these short lines and the 

 marginal lines ; in mine the horn is much thicker than in Dr. Kraatz's 

 species. 



I have used the older name of Golianthinns as a generic name, as 

 it more clearly indicates the group to which it belongs. 



Two mistakes occurred in my description : for Golianthus read 

 Golianthimis, and in the last line of the description instead of 

 " femora " read " tibiae." 



Mav 14th, 1900. 



On the Skeleton of the Snout and Os carunculce of the Mammary 

 Foetus of Monotremes. By Prof. J. T. Wilson,' M.B., Ch.M. 



For the research three specimens were utilized : one was the 

 fcetal Ornithorhynchus, whose external characters were described by 

 the writer in a previous paper before the Society ; another was a 



