21 



PART II. 



NOTES ON SHRIMP FOUND ON THE COAST OF 

 LOUISIANA. 



In our collecting along the coast a number of shrimp have 

 come to our attention, some of which are of interest. 



PENAEIDAE. 



(Forms with three pairs of chelate legs.) 



1. Panaeus setiferus (Say). "Lake Shrimp." (Plate I, II.) 

 The "Lake Shrimp" is the largest and most important spe- 

 cies, commercially, of any found in these waters. 



2. Penaeus braziliensis (Latrielle). 



This species is very similar to the preceding one, from which 

 it is separated by minor structural differences. It is re- 

 ported as being found in these waters, but none have been 

 taken by the writer. 



3. Parapenaeus constrictus (Stimpson). (Plate IV, figure I.) 

 This is a smaller species of this same group, which was 

 dredged in the gulf near Calcasieu Pass in the fall of 1906. 

 While probably common along the coast is never very 

 abundant. 



4. Xiphopi ikk us kroyeri (Heller). (Plate IV, figure 2.) 



A rather delicately colored species, which is easily distin- 

 guished from the preceding by its Long, slender rostum and 

 by the extreme length of the last two pair of walking legs. 

 Has been taken in the dredge in the gulf near Calcasieu 

 Pass and also a lew times in the lower part of the Pass. 

 One or two of the specimens obtained were aboul twcie as 

 large as the one figured. 



5. Sicyonia dorsaUs (Kingsley). (Plate IV. figure 3.) 



A delicately colored and sculptured form, a IVw specimens 

 of which were dredged in the gulf near Calcasieu Pass 

 November (1906). 



