190 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 5 



Distribution: Originally described from Capon, Peru, where the 4 

 specimens of the type lot were collected from vertical holes in muddy sand 

 of the inside beach at Capon, January 30, 1908, by Dr. R. E. Coker, at 

 that time fishery expert to the Peruvian government. The species has 

 since been taken at the island of San Lucas, Gulf of Nicoya, Costa Rica, 

 by M. Valerio, January 15, 1930; and again at Playa Blancas, Costa 

 Rica, by the Hancock Expeditions, February 8, 1935. 



Size: The type is about 24 mm. long, the specimen from the Gulf 

 of Nicoya a few mm. shorter, while the one from Playa Blancas is 

 smaller, measuring 18.2 mm. long exclusive of the incomplete rostral 

 plate. 



Remarks: From the appearance of the telson, I believe that this 

 species may be founded on the first littoral stage of a Lysiosquilla. 



The Playa Blancas specimen, regrettably, is mutilated. It lacks the 

 greater part of its frontal appendages, the eyes and anterior portion of the 

 rostral plate, and all but the most proximal portion of the antenna! 

 peduncles. The raptorial dactylus is armed with 11 teeth including the 

 terminal one, as it is also in the type of the species, where the terminal one 

 was not included in the original count on which the name of the species 

 was based. This Playa Blancas specimen, although smaller than the type, 

 has a small spiniform denticle intervening between each pair of the first 

 3 teeth or spines of the hinder margin of the telson counting from the 

 lateral margin, as represented in the accompanying sketch of the underside 

 of its telson. It is a male ; the type is of the opposite sex ; whether this fact 

 or the relative age or development of the 2 specimens accounts for the 

 difference in armature, I am unable to say. 



Lysiosquilla maculata (Fabricius) 



Lysiosquilla maculata Kemp, Mem. Indian Mus., Vol. 4, No. 1, p. Ill, 

 pi. 8, figs. 86-91, 1913, and synonymy. Kemp, Philippine Jour. 

 Sci., Vol. 10, No. 3, Sec. D, p. 174, 1915. Sunier, Contrib. Faune 

 Indes Neerl., Vol. 1, fasc. 4, p. 72, fig. 4, 1918. Edmondson, 

 Occas. Paps. Bishop Mus., Vol. 7, No. 13, p. 292, figs. \c. Id, 

 1921. Roxas and Estampador, Nat. App. Sci. Bull., Univ. Philip- 

 pines, Vol. 1, No. 1, p. 110, 1930. Komai, Annot. Zool. Jap., Vol. 

 17, Nos. 3, 4, p. 269, 1938. 

 Distribution: A shallow-water species with "a wide Indo-Pacific 



distribution extending from Japan and Oceanica to South Africa" 



