C A R I D E A. 



555 



Plate 35, fig. 6 a, side view of front, much enlarged ; 6, upper view 

 of front; c, outer maxilliped; d, e, larger hand in different positions; 

 /, smaller hand ; g, part of leg of second pair ; h, part of leg of third 

 pair. 



At Lahaina, Island of Maui, Hawaiian Group. 



Length, twelve lines. The beak from its base is very narrow trian- 

 gular, with straight sides, and there is no carina prolonged down the 

 back. Second joint of inner antennae hardly longer than first. Larger 

 hand partly pubescent, somewhat fusiform, but little compressed, the 

 finger turned out of plane of hand ; moveable finger short, thin above, 

 with arcuate dorsal margin. First joint of carpus of second pair of 

 feet less than half the second ; third shorter than fourth ; fifth longer 

 than fourth ; hand as long as fourth and fifth. The fifth joint of 

 third pair of legs long, very much longer than fourth, about eight sets 

 of spinules oil its lower side, rather long hairy above. 



Alpheus diadema. 



Rostrum latum, apice triangulatum et acutum, inter ocuhrwn bases 

 ortum, lateribus concavis. Spina basalis antennarum omnium brevis ; 

 squama externarimi basi utroque longior. Pedes 2di Stiis parce longi- 

 ores, articido carpi \mo paulo longiore quam 2dus vel btus, 2>tio itove 

 parce oblongo. Pedes 3tii 4:tive btis valde crassiores, articulo 3tio 

 apicem inferior em unidentato. 



Beak broad, apex triangular and acute, arises from a broad base be- 

 tween the bases of the eyes, and has the margins much concave. 

 Basal spine of either pair of antennae short, scale of outer pair 

 longer than base of either. Feet of second pair but little longer 

 than third, first joint of carpus much longer than second or fifth, 

 third or fourth sparingly oblong. Feet of third or fourth pair 

 much stouter than fifth, third joint unidentate at lower apex. 



Plate 35, fig. la, front, much enlarged; 5, profile of front; c, part 

 of outer maxilliped ; d, part of leg of second pair ; e, part of leg of 

 third pair. 



