562 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.38. 



long, thin, acuminate, teeth V • Antennal scale about as long as 

 rostrum. All the legs slender; second or larger cheliped smooth, 

 reaching well beyond the rostrum. 



One specimen only was taken by Doctor Cokcr, and differs from 

 North American specimens in having the rostrum more arched above 

 and not exceeding antennal scale: the second pair of feet extending 

 beyond rostrum by length of chela; its carpus longer than one-half 

 of merus and longer than palm. As the species of P (daemon are very 

 variable, I refrain from making a new species on a single specimen. 



Length of body of Peruvian individual 23 mm. 



From salt creeks at La Palisada near Tumbes, February 12, 1908. 



Not previously known from Peru. 



Distribution. — San Diego, California; Lower California: Ecuador; 

 Peru. 



RHYNCHOCINETES TYPUS Milne Edwards. 

 Plate.")!', fig. 2. 



Rhynchocinetes typus Milne Edwards, Hist. Nat. (rust., vol. 2, 1837, p. 383. — 

 Milne Edwards and Lucas, d'Orbigny's Voy. Am6r. Mer., vol. 6, 1843, 

 p. 36; vol. 9, atlas, 1847, pi. 17, fig. 1. 



A shrimp of medium size, in which the large lamellate rostrum is 

 articulated with the carapace: sever spines on anterior margin of 

 carapace, of which the median spine is followed by another farther 

 back. Rostrum bent strongly upward: superior margin armed with 

 two spines near the base and seven or eight denticles near the end; 

 inferior margin with about twenty teeth. Eyes short, stout. Inner 

 antennae biflagellate; scale of outer antennae long and narrow, flagel- 

 lum as long as body. First and second legs chelate; first stout, a 

 -pine at end of arm and wrist; third, fourth, and fifth legs similar, 

 spinulous beneath, third longest of all. Telson long and narrow, 

 t hree pair- of dorsal spinules. 



Length 1 I cm. 



Lobos de Aiuera, March 22. "( ameron del Mar." 



Not previously known from Peru. 



Distribution. Peru; Chile; New Zealand; Australia; Indian Ocean. 



SYNALPHEUS LATASTEI Coutiere. 



Synalpheus latasteil o\ mere, Proc. 1 . S.Nat. Mub., vol. 36, L909, p. 25, text fig. 7. 



Small shrimps having one very heavy claw, attached by slender 

 segments to the body. Eyes covered by the translucent carapace. 

 A small rosl ral spine and a similar shorter spine on each side in front 

 of e\ e. ( htter antenna' \\ it h a strong Male bearing a subapical spine; 

 inner antenna' with a large spine at t ached to it- basal joint. Legs of 

 firsl pair unequal and un-\ mmetrical, larger chela suboval, somewhat 



