68 CARL BOVALLIUS, THE OXYCEPHALIDS. 



as long as broad, and as long as the three following joints together; 

 the tibia has a row of spines along the front margin, two very short 

 spines and one long one alternating; the front margin of the carpus is 

 armed in the same way, with three-short ones and one long one alternating; 

 the serration of the front margin of the metacarpus is more irregular; the 

 dactylus is serrated. The seventh pair reach beyond the apex of the 

 carpus of the sixth pair; the femur is narrow, elongated, and as long as 

 the femur of the sixth pair; the front margin is concave; the metacarpus 

 is somewhat longer than the three preceding joints together. 



The pleon is about as long as the last six perseonal segments 

 together. 



The last coalesced ural segment is nearly twice as long as broad. 



The first pair of uropoda (PL II, fig. 12) reach to the apex of 

 the last pair, and beyond the apex of the telson; the peduncle is a little 

 longer than the inner ramus, which is considerably longer than the outer; 

 both are serrated. The second pair reach beyond the apex of the 

 peduncle of the last pair; the peduncle is longer than the inner ramus, 

 which is longer and broader than the outer; both are serrated. The 

 third pair are considerably longer than the telson; the peduncle is 

 shorter than the rami, which are equal in length, and serrated. 



The telson is about a third part longer than broad, triangular, 

 with the margins very convex, and smooth. 



COLOUE. White as ivory. 



LENGTH. 1622 mm. 



HAB. The subtropical region of the Atlantic; the Indian Ocean. 



Oeri. 3. Tullbergella, C. BOVALLIUS, 1887. 



The name is given in honour of Professor TYCHO TULLBERG of Upsala. 



Diagn. The head is short and broad, produced into a short, broad 

 sharp-pointed rostrum, which is open on the under side. 

 The hind part of the head is feebly constricted. 



The second pair of antennae are hidden under the head and 

 the peraeon, when folded. 



The first two pairs of perceopoda are subcheliform. The carpus 

 and metacarpus of the fifth pair are not dilated. The se- 

 venth pair are incomplete. 



