REPORT ON THE PYCNOGONIDA. 90 



narrower, the narrow part thus forming a sort of stalk-like process on which the ovate 

 front part is borne. The surface of the proboscis, when seen with the naked eye or 

 slightly magnified, is entirely smooth. 



The mandibles are small and rudimentary ; they consist of a short basal joint and a 

 quite rudimentary second joint, armed wdth rudimentary pincers. The length of the 

 mandibles is about one-fourth the length of the proboscis. 



The ovigerous legs are not very strong ; they are ten-jointed. The first three joints 

 are short ; the fourth and the fifth joints are the longest ; the sixth is about two-thirds 

 the length of the fifth ; and of the last four joints the first is by far the longest, and the 

 third the shortest. A small claw is found at the extremity of the tenth joint. All the 

 joints are furnished with small haii-s ; the last four joints are not armed wdth denticulate 

 spines, but with not very strong straight spines, scattered rather irregularly over the 

 whole surface of the joints. 



The legs are short. The first three joints are extremely short ; the three following 

 are longer and nearly of the same length, which is shorter than that of the first three 

 joints together. The first tarsal joint is very short ; the second comparatively long and 

 feebly curved, it bears at the extremity a small strongly-curved claw, which is sickle- 

 shaped, and not accompanied by auxiliary claws. All the joints of the legs are furnished 

 with numerous minute spines, placed in regular rows ; the fifth and sixth joints, however, 

 are also armed with a distinct row of tubercles, each bearing a small but strong sj^ine at 

 the tip (fig. 11). 



The only specimen of this species .s a female. It has very large genital pores on the 

 second joints of all the legs. The ovaries are found reaching as far as the sixth joint of 

 the leg. The ovarian eggs are exceedingly numerous, but comparatively large. 



This interesting Pyenogonid was found on the shore at Seapoint, near Capetown. 



Observations. — It is a true shore inhabitant, and forms among the species with- 

 out palpi the transition from those with {Pallene and Phoxichilidiutn) to those 

 without mandibles {Pycnogonum and Phoxichilus). To the first of the latter genera 

 (Pyowgonum) it is, I believe, very nearly allied — viz., by the robustness of the body and 

 by the presence of the protuberances (which I showed in my paper published iu 1877, 

 Ueber Pycnogoniden, to be outgrowths of the skin, richly armed with tactile organs) 

 on the dorsal surface of the body and of the lateral processes. The want of auxiliary 

 claws in both genera is also striking. Distinct cliff"erences are furnished by the presence 

 of mandibles, and of ovigerous legs in the female of my Hannonia typica ; I have 

 akeady pointed out above, however, that I do not consider these diifereuces very 

 important. 



