364 Mr. E. J. Miers on Crustacea from 
is perhaps worth noticing. He represents four spots on the 
margin of the left elytron, and three on the margin of the 
right *; and I notice that this is just the reverse in the type 
specimen, which has four spots on the margin of the raght 
elytron and three on the left; but if Prof. Westwood repre- 
sented the spots when drawing on the stone as he saw them 
in the insect, they would be reversed when the plate was 
printed. The additional spot on the right side is extremely 
small, which accounts for Burmeister and Westwood having 
omitted to mention it in their descriptions. 
XXXVII.— Ona Oollection of Crustacea made by Baron Her- 
mann Maltzan*t at Goree Island, Senegambia. By EDWARD 
J. Miers, F.L.S., F.Z.5. 
[Plates XTII., XIV., XV., & XVI] 
[Continued from p, 281.] 
MACRURA. 
Scyllarus (Arctus) arctus, var. paradoxus, n. 
Two small examples are in thecollection (length of the largest 
a little over 1 inch 1 line, 28 millim.), which differ from the 
typical form of the species in the somewhat broader carapace, 
the three cardiac prominences of which are more elevated, and 
in the form of the teeth of the median longitudinal dorsal 
carina in front of the cervical suture; the most anterior of 
these teeth is obsolete, the second very minute and situated just 
in front of, and beneath, the last tooth of the series, which is 
very prominent ; whereas in the typical S. arctus these teeth 
are all well defined and nearly equidistant from one another. 
In both, the carapace is covered with depressed squamiform 
tubercles, and the postabdomen marked with impressed lines 
forming leaf-like patterns. 
Whether these characters are of permanent value a larger 
series of better-grown specimens is needed to determine. There 
is, however, in the Museum collection a series of small speci- 
mens from Madeira (the Rev. R. B. Watson), the largest of 
* In the Museum copy of the ‘ Arcana’ the colourist has not placed the 
white on the spots where they are indicated by small circles. 
+ By an unfortunate oversight on my part, which I regret extremely, 
Baron Maltzan’s name has been misspelled in the earlier parts of this 
paper. Instead of “ Maltzam ” vead “ Maltzan,” and instead of ‘ Hetero- 
erypta Maltzami” read “ Heterocrypta Maltzant.” 
