540 Dr. H. Woodward—On Arthropoda of Coal-measures. 
1. Bexiinurus Bapwint, sp. nov. 
Amongst other interesting fossils from this last-named locality is 
a small king-crab which I believe to be new and undescribed; the 
following brief description may serve for its identification. 
Heo 
Fie. 1.—Bellinurus Baldwini, H. Woodw., sp. nov. Enlarged three times nat. 
size. Coal-measures: Sparth Bottoms, Sparth, near Rochdale. Presented 
by Mr. W. H. Sutcliffe, F.G.S., to the Geological Department of the 
British Museum (Natural History). 
This small and nearly perfect king-crab has a widely expanded 
semicircular head-shield (prosoma), 23 times as broad as it is deep, 
the genal or lateral portions of the shield being each as broad as 
the central portion (glabella) ; the lateral angles of the head-shield are 
produced posteriorly into stout, well-developed genal spines, the points 
of which extend as far back as the sixth post-cephalic segment of the 
opisthosoma. The head-shield, or prosoma, is depressed or flattened 
anteriorly, and has a broad, well-defined margin, widest in front, 
diminishing in breadth laterally, till it ends in the extremity of the 
cheek-spines. A clearly-defined raised line separates the glabella from 
the genal portions, but the cheeks are confluent in front of the glabella, 
which is enclosed by a raised line forming a double arch, one on either 
side of the median ridge; this is marked by a small V-shaped indent, 
on either side of which are placed the larval eyes (ocelli), while the 
compound eyes are seen midway on the lateral raised borders of the 
glabella, as is usually the case in most trilobites and in the living 
king-crab. The posterior border of the head-shield (prosoma) measures 
15 mm. in breadth across its faleate cornua. The opisthosoma is much 
narrower; its broadest anterior segment which joins to the prosoma 
measures only 10 mm. across. 
The opisthosoma is semicircular in outline, and is composed of 
eight distinctly trilobed segments, more or less anchylosed together, 
and, diminishing in breadth from before backwards; the division line 
