1926} Schmitt, Crustaceans Collected by the Congo Expedition 23 
stick, they promptly emerged, nearly always producing a sharp click by 
opening the large pincer. To judge from the repetition of this sound at 
such times, it apparently is by way of warning. They walk forward, but. 
swim backward. In life they are transparent grayish with dark gray 
markings, the large chela being still darker with a tinge of green. I 
never saw one free-swimming, but probably they take refuge near the 
relatively large burrows of stone crabs only when the tide is subsiding. 
The natives take not the slightest interest in them.” (H. L.) 
Crangon intrinsecus (Bate) 
Alpheus intrinsecus Batr, 1888, ‘Rept. Sci. Results Voy. Challenger,’ Zodl. 
XXIV, p. 557, Pl. c, fig. 1. Ratrsasun, 1900, Proc. U. 8S. Nat. Mus., XXTI, p. 313. 
Previously known only from off Bahia, Brazil, 7 to 20 fathoms (Bate), and Iogo- 
Togo, St. Thomas Island, West Africa (Osorio). 
Banana, August 1915, 19. 
MEASUREMENTS.—Length from tip of rostral projection to end of 
telson 30 mm., carapace and rostrum 11 mm. 
“One morning after a heavy storm had raged during the night I 
found a large piece of coral rock washed up in the shallow water just off 
Banana Point. On it were huge barnacles (Balanus), some alive, others 
empty. In one of the latter Crangon intrinsecus (Bate) was found. With 
it were a number of other shrimps, some sponges, and corals. The nearest 
coral reef is on the Angolan coast some fifteen miles south of the mouth 
of the Congo River.”’ (H. L.) 
Crangon species? 
One small alpheid without legs from St. Paul de Loanda, September 
22,1915, measured over all, 21 mm., carapace 7 mm. Behind the rostral 
point, the carapace is carinated between the unarmed orbital hoods. 
“Associated with Pontonia tyrrhena and Athanas grimaldi in the 
shells of Pinna rudis Linneus.” (H. L.)! 
Palemonidze 
Palemoninze 
DEsmocaRis Sollaud 
Desmocaris SoLLAUD, 1911, Compt. Rend. Acad. Sci., Paris, CLIT, p. 913. 
Desmocaris trispinosus (Aurivillius) 
Palzmonetes trispinosus AURIVILLIUS, 1898, Bihang K. Sv. Vet.-Akad. Handl., 
Stockholm, XXIV, Afd. IV, No. 1, p. 29, Pl. 1v, figs. 1, 2. 
a ET ii as Sa AM ON EC 
“WCE. ps 200 
