NOTICES OF BOOKS. 91 
lower angles of the segments were more rectangular (though still 
rounded off), causing the constriction to become exp d only 
e 
Ws ‘08m. fer 
Nordst., 8 amazum, n.v. [one-third smaller than C. mamilliferum, 
il 
Swedish examples]; Stawrastrum orbiculare (Ehr.), Ralfs, 8. extensum, 
n.v. [distinguished by its length being one-third greater than its 
breadth; resembles C. cosmarioides, Nordstedt, 
‘ den naturhist. Forening i 
Kjébenhavn, (1869) p. 195, t. iv., £43); Stawrastrum inconspi- 
cu ns. [V minute, about as long as broad; constriction 
on the sides more or less superimposed. Resembles S. hystrix, but the 
segments are not quadratic, and the spines are thus in a double 
large and very fine form, occurring in several situations, very scantily, 
in Ireland, it resembles S. Sebaldi more than any other form, but still 
Reinsch’s figure, to be quite i 
on the upper outer surface of his species]; S. derebrans, n.s. [a most 
marked species, very rare in Ireland, occurring very scantily in Co. 
