



HYPERIDEA. 



1011 



open; d, front view of head; e, antennae; /, maxillipeds ; g, first pair 

 of feet; h, second pair of feet; i, one of third or fourth pairs; h, pair 

 of natatory abdominal appendages ; Z, last abdominal segment, with 

 second and third pairs of stylets; m, first pair of stylets. 



Taken from the stomach of a Bonito, caught off the Canaries, Sep- 

 tember 27, 1838. 



Length, when closed up, four lines; when extended, about six lines. 

 All the organs of motion and manducation are concealed when the 

 animal is not in motion. The coxal plates have motion back and 

 forth, as well as laterally; and by retracting them a little, the animal 

 exposes its mouth, and is also enabled to thrust out its legs to secure 

 its prey. The head, in a front view, has a semicircular outline, with 

 the lower side v — * — '-shape, The thorax is broad and convex ; the 

 first two segments are each nearly half shorter than the following. 

 The epimerals are narrow and distinct. 



The exterior antennas are inserted just below the eye, and lie along 

 a narrow channel directed towards the beak. 



The mouth is closed by small lamellar maxillipeds (iig. 3/). 



The four anterior legs have a small hand, with the inner angle 

 (corresponding to an immoveable finger) elongate and acute. The 

 moveable finger is oblong, but, excluding the claw, does not exceed 

 the other in length; the claw is quite short, and the fingers are very 

 finely serrulate. The third joint is as broad as the hand, but not 

 oblong; the preceding is half smaller; the first is oblong, nearly equal- 

 ling the rest of the leg in length. 



The legs of the third and fourth pairs are longer and more slender, 

 and vergiform. The second joint is small and short (hardly oblong) ; 

 the following three are each between two and three times the length 

 of the second; the last terminates in a short, straight claw. The 

 third pair is a little longer than the fourth. 



The six anterior abdominal legs have the lamellae ovate in form 

 and ciliate (fig. 3 h) ; these lamellae are transversely marked by about 

 twelve transparent lines. The setae are plumose. 



The fourth segment of the abdomen is much shorter than the pre- 

 ceding. It is provided with a pair of stylets, having each two nar- 

 row, elliptical plates, quite unequal, naked, on an elongate pedicel. 

 The second pair of stylets has the lamellae nearly equal ; and, in the 



