28 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 98 



was not wholly complete, and apparently not a fully developed speci- 

 men, but Dr. C. B. Wilson, who made the determination, believes that 

 it may safely be called P. instrncta. 



Old Providence Island, Colombia, August 6 (sta. 30-38), shore, 

 reef, and tide-pool collecting. 



Trachypenaeus similis (Smith) 4 



C rang on candci (Guerin) 7 



Crangon formosus ( Gibbes) 2 



Crangon cristulifrons (Rathbun) 1 



Crangon bahamensis (Rankin) 11 



Crangon hctcrochaclis ( Say) 2 



Crangon species 1 



Synalpheus fritzmulleri Coutiere 1 



Synalpheus near rathbuni Coutiere 1 



The poor condition of this small specimen precludes a more posi- 

 tive determination or even an adequate description should it prove to 

 be new. The ambulatory legs and the large chela remind one strongly 

 of 5". rathbuni. The conical tubercle of the chela anteriorly carries the 

 suggestion of a tiny spinule. There are only four articles to the carpus 

 of the second legs. The frontal appendages appear to be much as in 

 the type of .S\ rathbuni; the posterior pair of spines on the dorsum of 

 the telson are not quite so large. 



Lysmata moorei (Rathbun) 2 



Thor paschal is (Heller) 1 



Brachy carpus biuuguiculatus (Lucas) 4 



Macrobrachiuui olfcrsii (Wiegmann) 1 



Palaemon tcnuicornis Say 1$ ovig. 



Gnathophyllum americanum Guerin 1$ ovig. 



Stenopus scmilacvis v. Martens 5 



Petrolisthcs galathinus ( Bosc) 1 J 1 



Petrolisthcs tridentatus Stimpson 1J 1 



Petrolisthcs near quadratics Benedict 2 juv. 



Calcinus tibicen ( Herbst) 8 



Cliban-arius tricolor (Gibbes) 36 



Dardamts vcnosus (H. Milne-Edwards) 2<$ 



Pagurus marshi Benedict 1 



Hippa cubcnsis (Saussure) 1J 1 



Dromia erythropus (George Edwards) i$ 



Pitho aculcata (Gibbes) 1 J 1 2$ ( 1 ovig.) 



