STALK-EYED CRUSTACEA 129 



I. Xantho denticulatus. 



Xantho denticulatus . White, Miers, S. Smith, A. Mihie 



Edwards, 

 Xantho Jiuniilis . . Desbonne and Schramm. 



The carapace is one-third wider than long-. The 

 regions are well marked in front, and the lobules which 

 form them are prominent and ornamented anteriorly with 

 punctuations and rugosities. The front is almost straight, 

 edge emarginate, separated in the middle line into two 

 indistinct lobes. The antero-lateral edges are large, more 

 bowed behind than in front ; they are divided into from 

 eight to ten small tubercular teeth. The pterygostomian 

 regions and the external maxillipedes are covered with 

 granulations and rugosities. The legs of the first pair are 

 strong and of unequal size, their superior surface is rough 

 and eroded ; the fifth joint of the large pincer has two 

 tubercles at its internal angle ; the fingers are short and 

 strong, those of the small pincer are longer and more 

 compressed. 



The colour is grey, with red spots ; the fingers of the 

 pincers are black. 



Range. — West Indies, Vera Cruz, Mexico, Brazil ; in 

 shallow water. 



6. Xanthodes. 



Xanthodes . . Dana, Miers, A. Milne Edwards. 

 {Xant/io part) . H. Milne Edwards. 



The carapace is convex, deflexed near the front and 

 antero-lateral margins, depressed posteriorly ; the antero- 

 lateral margins are not thin-edged or cristiform, and their 

 teeth are in the form of tubercles or spines. The basal 

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