4, DR. J. G. DE MAN ON THE PODOPHTHALMOUS 
represented in the collection, e. g., Matuta, Palinurus, and the 
Hippide. 
Most species are represented by a small number of specimens. 
A few, however, are an exception and appear to have been very 
common at the Mergui Islands at the time the collection was 
made, as indicated in the following table :— 
Specimens. Specimens. 
Leptodius exaratus, M.-Edw.... 25 Gelasimus triangularis,A.M.-Ed. 33 
Goniosoma merguiense, n. sp.... 20 Dotilla intermedia, n. Sp.....00+-- 32 
Gelasimus Dussumieri, M.-Edw. 57 Metaplax elegans, n. sp. ......+: 29 
acutus, Stimps. «........<+. 67 Sesarma Edwardsi, n. sp. ...04 66 
annulipes, Latr. ............ 33 Porcellana picta, Stimps.......... 25 
The genus Porcellana is represented in the Bay of Bengal by 
no fewer than 15 species, 8 of which are in the collection. 
Finally, I desire to take this opportunity of expressing my 
obligation to the following gentlemen, from whom I have received 
valuable assistance. I am especially indebted to Dr. F. A. 
Jentink, Director, and to Dr. R. Horst, Conservator, of the 
Zoological Museum of Leyden, for having permitted me to study 
a large series of interesting typical specimens preserved in that 
great Institution. My thanks are due to Mr. C. Ritzema, 
Conservator of the same Museum, for having kindly granted me 
the loan of many valuable carcinological works during the time 
J was working at this Collection; and also to Prof. Alph. 
Milne-Edwards, of Paris, to Prof. Mobius, of Kiel, and to Mr. C. 
Koelbel, of Vienna, for having permitted me to study a large 
number of typical specimens, described respectively by the late 
H. Milne-Edwards, by Fabricius, and in the ‘ Novara’ Expedition. 
I have to express my thanks also to Dr. F. Meinert, of Copen- 
hagen, for having graciously presented to me excellent life-size 
photographs of three species of Fabricius, the types of which 
are preserved in the Museum of Copenhagen; and to Dr. Hil- 
gendorf, of Berlin, and to Dr. F. Richters, of Frankfort-on-the- 
Main, for having kindly compared for me specimens from Mergui 
with typical specimens of Herbst and Ruppell. 
