76 THE VOYAGE OF H.M.S. CHALLENGER. 



numerous small hairs ou the iuner margin ; the second is armed with three very strong 

 and broad spines on the inner margin near the base, while longer and much more 

 slender spines are present on the outer margin. 



A single specimen of this species was collected during the cruise of H.M.S. Challenger. 

 It is a female with eggs in all stages of ovarian development, enclosed in the fourth joint 

 of the leg. The genital pores I could not distinctly observe, but no doubt they are placed 

 ventrally near the distal extremity of the second joint of the leg. 



Habitat. — This species was found at Seapoint near Cape Town in November 1873. 



Observations. — The genus Discoaraclme is in all probability nearly allied to Endeis, 

 Philippi. But as that genus is difficult to make out from the insufficient description 

 of Philippi, I propose a new genus for the species in question, because Philippi's form 

 had eight-jointed palpi, whereas the Challenger form, which must be a full-grown animal, 

 has only five-jointed palpi. This species with its short legs and highly concentrated body, 

 is a true littoral form. 



Palleiie, Johnston. 



Pallene australiensis, u. sp. (PI. XL figs. 1-7). 



Diagnosis. — Body extremely slender. Cephahc part of the eephalothoracic segment 

 distinctly separated from the thoracic part by means of a true articulation. Proboscis 

 short, inserted ventrally. Ovigerous legs with true denticulate spines, and a long 

 denticulate claw. Legs without auxiliary claws. 



Description. — 



Length of the proboscis, . . . . • . • 1'5 mm. 



Total length of the body, . . . . . . . 6-5 „ 



Length of the ovigerous legs, . . . ■ • ■ 7 ,, 



Length of the leg of the third pair, . . . . . 28 „ 



The body is extremely slender; the cephalic part of the eephalothoracic segment 

 (neck) is much swollen at the tip for the insertion of the mandibles. A true articula- 

 tion divides this cephahc part from the thoracic part. The rather short oculiferous tubercle 

 is situated about the front of the thoracic part. 



The intervals between the lateral processes, at the extremities of which the legs are 

 found, are very large. The abdomen is rudimentary and directed a little upwards. The 

 surface of the body and of the lateral processes is smooth. The jDroboscis is short and 

 inserted rather ventrally. It is constricted beyond the middle, and is much wider at the 

 extremity, where the very small triangular mouth is observed. 



The mandibles are short and robust. The first joint reaches almost as far as the end 

 of the proboscis, the second joint is considerably swollen, and terminates in a pair of 

 short pincers. These are furnished with a single very small tooth towards the ex- 

 tremity. 



