Mr. E. J. Miers on Malaysian Crustacea. 315 



OXYSTOMATA vel LEUCOSOIDEA. 



Camara calappa (Linn.). 



New Guinea (an adult female) ; Aroe Islands (an adult 

 female) . 



Calappa lopltos (Fabr.). 



Celebes, Macassar (a male) . 



No trace of the characteristic coloration exists in this speci- 

 men. The carapace is somewhat more tuberculated, and the 

 denticulation of the antero-lateral margins near the extra- 

 orbital tooth is less marked than in a specimen in the Museum 

 collection from the Indian Ocean, which I refer to the typical 

 C. loplws. It is possible that these characters indicate the 

 existence of distinct varieties or species. 



Matuta victrix ) Fabr. 



Celebes, Macassar (two males and a female) ; Bali (an adult 

 female). A female from Batjan also perhaps belongs to this 

 species, in which all trace of the spots or markings have 

 disappeared. 



Matuta circulifera, sp. n. (PI. XIV. fig. 5.) 



Carapace everywhere rather finely granulated ; the granu- 

 lations rather coarser on the more elevated parts ; the tubercles 

 all distinct, but not very prominent. The rostrum is small, 

 obtuse, and subentire, with only a very obscure indication of 

 a median notch. Lateral marginal spine long, acute, and 

 straight. Hand of male nearly as in M. lunaris (M. rubro- 

 lineata, Miers) and M. lineifera. Lines of the carapace 

 forming complete and distinct circles, arranged in three 

 transverse series, i. e. a transverse series of three circles on 

 the anterior portion, of four on the median portion, and of 

 three on the posterior portion of the carapace. 



Indo-Malayan seas. An adult male is in the collection of 

 this interesting: form, which belongs to section A of the 

 2,-enus, and is distinguished from both M. lunaris and M. 

 lineifera by the strikingly symmetrical coloration and the 

 form of the front. 



The coloration has unfortunately much faded in the unique 

 example (preserved in spirit), and, it is to be feared, will soon 

 altogether disappear. 



Matuta Banksii, Leach. 



Celebes (a male) ; Amboina (a female) ; New Guinea (an 

 adult male) ; Bali (a female). 



