igog.] N. AnnandaIvE : The Indian Cirripedia Pedunculata. 85 



margins. The other cirri similarly armed except as regards the basal joints ; the 

 circle of bristles incomplete on all except the last few joints in each case. The two 

 rami of the fifth and sixth cirri almost equal. Anal appendages long and slender, with 

 about twelve joints, somewhat variable. Penis slender and rather short, very min- 

 utely and obscurely annulated, bearing a small number of fine, scattered hairs on the 

 proximal part and a few rather coarse, short, flattened hairs on the distal ; the whole 

 organ tapering, but the extreme tip minutely blunt, the base contorted. 



Mouth parts. — Labrum moderate, notbuUate. Maxilla with free edge slightly 

 irregular ; the outermost spine much larger than any of the others ; a number of sub- 

 equal spines arranged all along the edge^ with a bunch of stout hairs near the inner 

 end. Mandible with four teeth, the innermost with a short, sharp projection on its 

 inner margin near the tip ; the bases of all the teeth near together and on a wide arc ; 

 the tip of the innermost tooth sharply pointed, the remainder rather blunt ; slender 

 spines arranged in a semicircle parallel to the excavation between the third and 

 fourth teeth, in a dense mass at the base of the first and second teeth and almost all 

 over the innermost, forming a fringe on the inner border of the latter. 

 Length of capitulum . . . . . . 12 mm. 



Breadth ,, .. .. . . 10 ,, 



Length of aperture . . . . . . 4 ,, 



, , peduncle . , , . - • 7 ,, 



Habitat.— Off the S.-W. of India, 185 fathoms. Four specimens on shell of 

 living Xenophora pallida (R.I.M.S. " Investigator"). 



Hoek {loc. cit.) was undoubtedly right in considering his Alepas obliqua from the 

 Malay Archipelago as an ally of this species. My species appears, however, to be a 

 stouter one and to exhibit distinct differences in the mouth parts, cirri, etc. Both 

 species are interesting in that their cirri are short and almost straight, thus showing 

 an approximation to the Alepadine type, although neither is pelagic. 



Subgenus Heterai^epas, Pilsbry. 

 Heteralepas (Heteralepas) nicobarica, sp. nov. 



Alepas indica, Annandale {nee Gruv el) , Mem. Asiat. Soc. Bengal, i, p. 83 (1906). 



All the tissues delicate and transparent, with a slight yellowish tinge in spirit. 

 External surface smooth or minutely wrinkled. 



CAPITUI.UM indistinctly separated from the peduncle, slightly inflated, without 

 scuta ; the occludent margin nearly straight, the carinal margin rounded, bearing a 

 very low crest with two small projections. Aperture about one-quarter as long as 

 the vertical length of the capitulum, with short fringed lips and almost parallel sides. 



PeduncIvE several times as long as the capitulum in some specimens, not much 

 longer than the capitulum in others, cylindrical, .stout, expanding slightly at the base. 



Cirri, etc. — Cirri with a large number of joints, long and curved. First cirrus 

 not very widely separated from the second, with the two ramisubequal, each joint bear- 

 ing a fringe of stout bristles across its anterior margin. vSecond cirrus much shorter 



