TULLBERGELLA CUSPIDATA. 69 



The last coalesced ural segment is longer than the first, and 



about as long as it is broad. 

 The inner ramus of the third pair of uropoda is coalesced 



with the corresponding peduncle. 

 The telson is broad and triangular, with the sides more or 



less curved. 



Syn. 1887. Tullbergella, C. BOVALUUS. 35, p. 38. 



Tullbergella is easily distinguished from the other genera of 

 the family by the not compressed, broad, arid robust form of body, 

 the short head and rostrum, and the incomplete seventh pair of perago- 

 poda. In the form of the second pair of antennae it agrees with Simo- 

 rhynchotus and Cranocephalus; in the form of the first two pairs of perseo- 

 poda it resembles Cranocephalus and Stebbingella. 



Hitherto only one species is known. 



1. Tullbergella cuspidata, 0. BOVALLIUS, 1887. 



PL II, fig. 13; and p. 20, fig. I; p. 23, fig. 12; p. 25, fig. 18 and 23; p. 26, fig. 27; 

 p. 29, fig. 40; p. 32, fig. 51; p. 34, fig. 59; p. 35, fig. 61, and p. 38 fig. 74. 



Diagn. The head is a little longer than the first four perseonal seg- 

 ments together. The rostrum is broad, abruptly narrowed 

 at the apex, and about as long as the hind part of the head, 

 which is much broader than the base of the rostrum. 

 The free under margin of the carpus of the first two pairs 

 of perceopoda is serrated, armed with bristles, and longer 

 than the hind margin of the metacarpus. The lower hind 

 corner of the femur of the sixth pair is produced backwards 

 into a strong, triangular, sharp-pointed process. The femur 

 of the seventh pair is more than half as long as that of 

 the sixth, and more than twice as long as the three follow- 

 ing joints together. The epimeral of the fifth pair shows 

 a tuberculous prominence. 



The lateral parts of the pleonal segments are straight and 

 smooth below; the hind corner of the first two segments is 

 angular, that of the third is strongly produced backwards 

 into a long, triangular, sharp-pointed process, which reaches 

 beyond the hind margin of the first ural segment. 



