Tribe PENEIDEA 
Peneidsz 
Peneinz 
PENEUS Weber 
Peneus Weser, 1795, ‘Nomenclator entomologicus,’ p. 94. 
Peneus trisulcatus Leach 
Peneus trisulcatus Leacu, 1815, Trans. Linn. Soc. London, XI, p. 347; 1816, 
‘Malac. Pod. Brit.,’ Pl. xxi. Presta, 1915, Archiv f. Naturg., LX-X XI, Abteil. A, 
Heft 1, p. 109, and synonymy. 
Penzus caramote Ratupun, 1900, Proc. U. S. Nat. Mus., XXII, p. 311, and 
synonymy. Dr Man, 1912, Ann. Soc. Roy. Zool. Malacol. Belgique, XLVI, (1911), 
p. 248, and synonymy. Batss, 1916, ‘Beitr. Kenntnis Meeresfauna Westafrikas,’ 
IT, p. 15, and synonymy. 
This well-known Mediterranean species ranges along the West African coast as 
far as Benguela, and is also found off the coast of Spain and Portugal. 
Banana, July 1915, 3 of. 5 of. Aupust 1915, 69, 120. St, Paul 
de Loanda, September 22, 1915,107,19. 
“These shrimps are brought to the market in St. Paul de Loanda in 
great quantities. At low tide, not far from town, on the flat sandy beach 
of the bay, every day I saw (September) the shrimp-catchers, barefoot 
boys and girls, walking back and forth along the shore. In the rather 
soft wet sand they feel about with their feet for their victims which they 
throw alive into the baskets hanging from their shoulders. 
“Tt is interesting to watch these shrimps manage to become im- 
bedded one or two inches below the surface of the sand without leaving a 
trace of their presence. Previous to this they are moved back and forth 
by the waves. One has to be on the spot at the time of the receding tide. 
At about the point where the incoming waves are checked by the force 
of the undertow, the seething waters carry up clouds of sand in suspen- 
sion. Into these the shrimps steer and with much dexterity and ease 
arrange to be covered over with the descending grains of sand under 
which they are habitually found. In that part of the beach the sand 
always remains loose and moist. 
“Tn life Peneus trisulcatus is transparent, of a grayish color with 
dark gray and greenish brown mottlings, and about three and one-half 
inches long over all.”’ (H. L.) 
Peneus brasiliensis Latreille © 
Penzus brasiliensis LATREILLE, 1817, ‘Nouv. Dict. Hist. Nat.,’ 2nd Ed., XXV, 
p. 156. Rarusun, 1900, Proc. U. S. Nat. Mus., XXII, p. 311. Leresvre, 1908, 
Bull. Mus. Hist. Nat., Paris, XIV, p. 267. Mitne Epwarps and Bouvier, 1909, 
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