CRAG NON FASCIA T US. 
Tab. XXXYII. c. Fig. 1. 
C. pedum seeundo pari filiforme, quam primuin et tertium breviore minute didaetyle, abdomiue ad 
articulum quartum subitb contracto, fusco latifasciato. Spina sterni obsoleta. 
Cragnon fasciatus, liisso, Crust, de Nice, t. III. f. 5, p. 82. 
The colour of this shrimp resembles that of the common species, excepting in the dark 
markings on the second and third and a brown band across the fourth segment of the abdomen. The 
fourth segment contracts rather suddenly, and the fifth and sixth are comparatively short and 
narrow. The sternal spine, sharp and strong in the common shrimp, is almost obsolete in this 
species. The first specimens found on our coast were taken in Salcombe Bay in Devonshire. 
ALPHEUS. 
ASTACUS, Fabricius. 
ALPHEUS, Fabricius, Leach, Latreille. 
Antenna externa subtus et extus internas locatse, palpo lamellari angusto et acuminato. ^ 
Antenna, internee setis duabus terminantibus seta, superiori quam inferior crassiuscula, articulo 
basali brevi, squama spinifermi munito. 
Pedipalpi externi angusti, elongati. _ . . 
Pedum par primum magnum insequale didaetyle ; par secundum filiforme, didaetyle, tenuissimo, 
carpo multiarticulato ; paria altera attenuata, monodactyla. 
Testa antice super oculos arcuatim producta. 
Abdomen elongatum. 
External antennas placed underneath and outside internal; laminar flap nanow and 
acuminated. Internal antennae ending in two setae ; upper seta rather thicker than under, basal 
joint short, provided with a spiniform scale. External pedipalps narrow, elongated. First pail of 
feet large, unequal, didaetyle; second pair filiform, very thin, didaetyle, with multiarcutate wiist. 
Carapace produced in an arch over the eyes. Abdomen elongated. 
