220 



The 1st pair of abdominal appendages of the male are strongly channelled 

 along the inner surface ; those of the 2nd pair are grooved, slightly twisted and 

 setose near the tip. 



This species grows to a large size, and although occasionally specimens are 

 found inhabiting a small gastropod shell along with a single encrusting sea- 

 anemone, yet as a general rule they live embedded in the semi-cartilaginous 

 coenosarc of an Epizoanthus-colowj from which all traces of the shell that formed 

 the original bond of commensalism have disappeared by absorption. 



In a large male from the Laccadive Sea the length of the carapace is 22 

 millim., that of the abdomen when unravelled 50 millim., that of the large 

 cheliped 70 millim., that of the small cheliped 45 millim. 



From the Arabian Sea, near the Laccadives and Malabar coast, 705, 740, 

 824, 836, 937 and 1200 fathoms: from the Bay of Bengal, 164i, 1748, 1803 and 

 1997 fathoms. 



Our specimens have been compared with " Albatross " specimens, from off 

 the coast of S. Carolina, with which they agree entirely. 



-r, -, AT 6171 6881-6884 8750-8751 8755 1969-2000 2422 2642 3749 



Regd. Nos. — : — ^— : — ^— : — : — — : _ : _ : — . 



4. Parapa gurus Andersonl, Henderson. 



Parapogwrus andersoni, Hendpraon, Journ. Asiatic Soc. Bengal, Vol. LXV. pt. 2, 1896, p. 529. 



ILLLSTKATIONS OF THE ZOOLOGY OF THE INVESTIGATOR, CRU STACKA, PLATE XXXII. FlG. 2. 



' The anterior portion of the carapace is moderately convex, both from side 

 to side, and from before backwards ; the surface is slightly uneven, with a few 

 tufts of hair near the lateral and anterior margins. The median frontal pro- 

 jection is fairly prominent, while the lateral projections are scarcely indicated at 

 all. The portion of the carapace behind the cervical grooves is membranous, 

 and even the cardiac area is uncalcified. The eye-stalks are slightly concave on 

 their inner surface, and a few rather long hairs are found on the upper surface 

 of each ; the corneae are small, but deeply pigmented. The ophthalmic scales 

 are small and laterally compressed, each terminating in four small apical denticles. 

 The antennal peduncles are broad, and exceed the eye-stalks by about the length 

 of the last peduncular joint ; the acicle has a slight sigmoid curve, and extends to 

 the end of the peduncle, while its inner margin is provided with a row of spinules. 

 The external prolongation of the seoond joint of the antennal peduncle is acute, 

 but very short ; the terminal joint of the peduncle is broad, and flattened from 

 above downwards. The antennal flagellum is more than twice the length of the 

 body. The antennular peduncles exceed the eye-stalks by the whole of their 

 terminal joint and about two-thirds of the length of their penultimate joint. 



' The chelipeds are elongated and slender, with the joints faintly pubescent, 

 and armed with subspiniform granules. The carpus is about one-fourth of its 



