PYCNOGONIDA— CALMAN. 



49 



spinosum, Montagu. The fact that Schimkewitsch (1913, p. 605) has discovered a 

 type-specimen of Endeis didactyla and has identified it with Dohrn's Ammothea 

 magnirostris only proves that Philippi's generic diagnosis, upon which Loman lays 

 stress, agrees with neither of the species upon which it was based. 



Endeis nustralis (Hodgson) (Text-fig. 11). 



PhoxicMlus aiistralis, Hodgson, 1907, p. 5, PI. 1, fig. 1 



Occurrence. — Station 220, off Cape Adare, 45-50 

 fathoms; 1 $. Station 314, McMurdo Sound, 

 222-241 fathoms; 1 ^, 2 ?. Station 338, Entrance 

 to McMurdo Sound, 207 fathoms ; 1 $. Station 340, 

 off Granite Harbour, 160 fathoms; 2 $. Station 355, 

 McMurdo Sound, 300 fathoms ; 1 $. 



Remarks. — To the descriptions of this species by 

 Hodgson and by Bouvier it may be added that a 

 pair of small tubercles, more prominent in some 

 specimens than in others, are present on the anterior 

 margin of the cephalon above the base of the 

 proboscis (Fig. 11). These tubercles appear to cor- 

 respond to those regarded by Dohrn as vestiges of 

 the chelophores. The orifices of the cement-glands 

 described by Bouvier cannot be discerned in either 

 of the males in this collection, possibly owing 

 to the specimens not being fully mature. 



Bouvier, 1913, p. 118, text-fig. 74. 



Fig. 11. — Endeis australis (Hodgson). 

 Dorsal view of cephalic segment 

 and proboscis of specimen showing 

 well-developed cephalic tubercles. 



Genus AMMOTHEA, Leach. 



Ammoiliea, Leach, 1814, p. 33. 

 Leionymplion, Mobius, 1902, p. 183. 



I have elsewhere (1915«) re-described the holotype of Leach's Ammothea 

 carolinensis, with which I have attempted to show that Pfefier's A. grandis is identical. 



Bouvier (1913, p. 122) includes, among the characters distinguishing this genus 

 from Achelia, " pas de saillie ce'mentaire fe'morale." While it is true that there is no 

 conspicuous prominence as in Achelia, the opening of the femoral cement-gland is very 

 distinct, at a little distance from the end of the femur on the dorsal surface, and in 

 A. meridioncdis it is elevated on a gentle swelling visible in side view (Fig. 12, C and 

 D, p. 54). Bouvier also, in his key, distinguishes Ammothella from Ammothea only 

 by the biarticulate scape of the chelophores, but as he includes in Ammothella the 

 Achelia hispida of Hodge, which has an unjoiuted scape, it might be better to use for 

 this purpose the transverse ridges of the trunk somites, which arc very distinct in all 

 the species of the present genus. 



VOL. III. H 



