/S. I. Smith on Brazilian Crustacea. 11 



mentioned by Stimpson in liis description of A. Ordvxnji, and is :i 

 very conspicuous character in the species. 



I have retained this species in the genus Achelous of DeHaan in- 

 stead of Xeptwms of the same aixthor, because the narrow carapax, 

 prominent front, and the form of the external maxillipeds and of the 

 male abdomen ally it very closel y to the spinimanus, and, together 

 with tlie narrow dactyli of the first three pairs of ambulatory legs, 

 separate it widely fi-om Nejytunus pelagicus^ the type of the genus 

 Ncptunxis. 



The length of the lateral spine of the carapax, whicli appears to 

 have been A. Milne Edwards' principal character for separating these 

 genera, seems to be of slight importance, and in the present case, if 

 used alone, is scarcely sufficient for a specific distinction. 



Stimpson's specimens of A. Ordwayi were from Florida and St. 

 Thomas. 



Goniopsis cruentatns DeHaan. 



Cancer ruricola DeGeer, ]\Iemoires pour servir a I'histoire des Insectes, tome vii, p. 



417, pi. 25, 1778 (non Cancer ruricola Linne). 

 Grapsus cruentatus Latreille, Histoire des Crust, et Insects, tome vi, p. 70, 1803 ; Dcs- 



marest, op. cit, p. 132 ; Edwards, Histoire natureUe des Cnist, tome ii, p. 85 ; 



Gibbes, loc. cit., p. 181. 

 Gonioims cruentatus DeHaan, op. cit, p. 33, 1835; Edwards, Annales des Sciences 



natureUes, 3™e serie, tome xx, 1853, p. 164, pi. 7, fig. 2; Stimpson, Proceedings 



Acad. Nat. Sci., Philadeiphia, 1858, p. 101 ; Heller, op. cit, p. 43. 

 Grapsus longipes Randall, .Journal Acad. Nat. Sci., Philad., vol. viii, p. 125, 1839. 

 Goniopsis ruricola ^hite^ List of Crust in the British Museum, p. 40, 1847 ; Saus- 



sure, op. cit, p. 30, pi. 2, fig. 18, 1858. 

 Goniograpsus cruentatus Dana, American Journal Sci., 2d series, vol. xii, p. 285, 1851 ; 



United States Exploring Expedition, Crust., p. 342, pi. 21, fig. 7, 1852. 



A single male of this beautiful species was collected at the Reefs of 

 the Abrolhos. 



Cryptograpsus cirripes, sp. nov. 



Plate I, figure 3. 



The carapax above is granulous and naked The front as seen from 

 above is nearly straight witli only a sliglit median immargination. 

 The orbits are broad, the margin sliglitly upturned and broken by a 

 broad notch near the inner angle. The outer orbital teeth are long, 

 acutely pointed, project straight forward, and the distance between 

 their tips is nearly equal to two-thirds the breadth of the carapax. 

 The succeeding teeth of tlie antero-lateral margin are prominent and 

 acutely })ointcd, the third tooth much smaller than the others, and the 



