202 AUSTRALIAN MALACOSTRACA. 



376. Penseus granulosus. 



Penceus granulosus, Haswell, 1. c. p. 41. 



Rostrum rather short, not reaching so far as the end of the 

 antennary scale, very slightly recurved, with ten small teeth 

 ahove, situated close together anteriorly the intervals between 

 consecutive teeth increasing progressively from before backwards, 

 the last separated from the penultimate by a wide interval; 

 under surface toothless, with a fringe of very long cilia. Rostrum 

 continued backwards into a blunt carina, which is non-sulcate, 

 and reaches to the posterior margin of the carapace ; no lateral 

 sulci. Carapace granular. Supra-orbital spine present, small ; 

 antennary and hepatic spines present ; gastro-hepatic sulcus 

 almost obsolete. Eyes large. Antennules with the nagella 

 sub-equal, nearly equal in length to the peduncle. External 

 maxillipedes hairy, the first three joints of the endopodite broad, 

 compressed ; flagellum reaching hardly as far as the distal end 

 of the second joint. Ambulatory limbs progressively increasing 

 in length to the third pair ; fourth shorter than, fifth equal to 

 the third pair. Eirst and second pairs both unispinous, third 

 non-spinous. Surface of abdomen minutely granular ; third, 

 fourth, fifth and sixth segments with a mesial dorsal carina, 

 which ends in a small spine on the sixth segment. Eirst, second, 

 fourth and fifth rings with a lateral notch on their posterior 

 border ; those on the first and second segments shallow and open, 

 those on the fourth and fifth rather deeper. Seventh segment 

 mesially grooved ; its apex acute, but not developed into a spine ; 

 its lateral margin with a single, weak spine. 



The above is the description of the adult female. Erom the 

 some localities are a number of small male specimens, which 

 seem to be the males of this species ; they differ from the females 

 in the following points: (1) the rostrum is a shade higher and 

 more compressed ; (2) the peduncles of the antennae are rather 

 shorter ; (3) the anterior pair of legs are bispinous ; (4<) there 

 is no marked dorsal carina on the carapace. Length of female 

 3^ in. ; of male 2.V in. 



Darnley Island; Cape Grenville; Cape York (Maeleay 

 Museum). 



