NO. 4 schmitt: stomatopods 187 



posteriorly in 3 small spines; next 2 carinae in order ending in simple 

 posterior spine. Rostral plate broadly cordiform, more or less sub- 

 rectangular, median projection broadly triangular, acute; antero- 

 lateral angles broadly rounded, median length about % greatest 

 width. Eyestalks flattened cylindrical to subtriangular; cornea bl- 

 lobed and set more or less transversely on stalk. Raptorial dactylus 

 with 4 teeth, including terminal one. Submedian denticles 8-9. . . . 

 mccullochae, p. 197 



Lysiosquilla polydactyla von Martens 



Lysiosquilla polydactyla von Martens, Sitzb. Ges. naturf. Fr. Berlin, 

 p. 92, 1881. Bigelow, Proc. U.S. Nat. Mus., Vol. 17, No. 1017, 

 p. 504, 1894 [in key only]. Doflein and Balss, Mitt. Nat. Hist. 

 Mus. Hamburg, Vol. 29, p. 40, 1912. Kemp, Mem. Indian Mus., 

 Vol. 4, No. 1, 1913, p. 203 [listed only]. 

 Distribution: Very iew specimens of this species have ever come to 

 light and those only with not altogether certain locality data. The unique 

 type was found unlabeled among a lot of material consisting of well- 

 known Peruvian and Chilean species, while the 3 listed by Doflein and 

 Balss were included in a collection made by the late Dr. Fredrico 

 T[eobaldo] Delfin in Chilean waters, and are believed quite certainly to 

 have been secured in Orange Bay, Hoste Island, south of Tierra del 

 Fuego. 



Size: The length of the type from tip of rostral projection is about 

 95 mm., carapace 21. The Doflein and Balss specimens are all three males. 

 Measured on the median line, exclusive of rostral plate, they are approxi- 

 mately as follows: 63 mm. long, carapace 11.2, rostrum 4; 69.5 mm. 

 long, carapace 12.2, rostrum 4; 69.5 mm. long, carapace 12.4, rostrum 

 4.5 ; this last is the specimen figured here. 



Remarks: Through the exceeding kindness of Dr. A. Panning, Cus- 

 todian of the Hamburg Museum, I have been enabled to examine the 3 

 specimens recorded by Doflein and Balss. 



In general appearance and coloration, L. polydactyla resembles L. 

 macidata and L. scabricauda^ but nevertheless is somewhat intermediate 

 between these forms with dorsally unarmed telson and those that carry a 

 transverse row of dorsal spines, inasmuch as the submedian spines of the 

 telson are movable. The median raised area of the telson of L. polydactyla 

 ends in a broad tonguelike projection, while the single, flattened, obso- 

 lescent carina either side ends in a small, blunt, tuberculiform tooth. In 

 large specimens of L. scabricauda, at least occasionally behind the median 



