112 CARCINOLOGICAL STUDIES. 



red colour. A single spot is seen on the gastric region 

 of the cephalothorax. The arms and the palmar portion of 

 the hands are marked on the outer as well as on the in- 

 ner surface with a similar large spot , and the carpopodites 

 of the anterior legs present also a spot on their upper margin 

 near the articulation with the arms ; the latter, finally, and 

 the carpopodites present a spot on their under surface. The 

 second and third pair of legs are entirely yellowish red. 

 The dactylopodites are figured too long in Heller's work. 



The specimen referred by Leuz and Richters (Beitrag zur 

 Krustaceenfauna von Madagascar, 1881, p. G) to Calcinus niti- 

 dus apparently belongs to another species. 



Calcinus nitidus Heller inhabits the shores of Tahiti. 



37. Clibanarius vulgaris Dana. 



Clihnnarius vulgaris, Dana, 1. c. p. 462. 



Clibanarius infraspinatus, Hilgendorf, de Man, in: The Journal 

 of the Linnean Society of London, Vol. XXII, 1888, p. 237. 



Two voung specimens, of which the larger one is an 

 ova-bearing female; the smaller one inhabits a Natica-sheW. 

 The larger specimen, the cephalothorax of which has a 

 leno-th of 16 mm., fully agrees with a specimen of Clib. 

 infraspinatus from the Mergui Archipelago, which I have 

 before me, but the narrow red longitudinal lines, with 

 which the second and third pair of legs are ornamented, 

 are not visible, quite as is the case with the large typical 

 specimen of Herbst's Cancer clibanarius in the Berlin Mu- 

 seum. In the other specimen these lines are faintly visible, 

 but on his turn this individual shows some other differen- 

 ces. The right chelipede is namely a little larger than the 

 left, and I find on the inner margin of the immobile 

 fino-er , no trace of the distal tooth which occurs in adult 

 individuals close to the horny tip. The inner margins 

 of the under surface of the arms present no trace of 

 the elevated dentiform tubercle, by which typical speci- 

 mens are characterized, and which neither occurs in the 



Notes from the Leyden Museum , Vol. XII. 



