78 THE VOYAGE OF H.M.S. CHALLENGEE. 



The basal enlargement on the dactyle of the raptorial claw is not notched, its outer 

 border is truncated, and at its distal edge the transition is abrupt to the long slender 

 gently curved acute tooth, which is barbed with minute serrations on its inner edo-e, 

 while the outer edge of the second joint is finely dentate, with acute teeth. 



The eyes are subcylindrical, with the coronal portion a little wider than the basis. 

 No secondary differences between the sexes, except in the first abdominal somite. 



Habitat. — The Challenger collection contains a single female specimen from 

 Honolulu. The only other known specimen is a male from Matuku, Fiji Islands, 

 described by White and also by Miers. 



Colour. — White describes his dry specimen as "marbled," of a light yellowish- 

 brown colour, varied with a darker colour. The Challenger specimen, preserved in 

 alcohol, has a broad transverse light liand across the carapace, while the rest of the 

 dorsal surface is marked with brown pigment. 



Length, l^\,*^ths inches. 



7. Protosquilla excavata (Miers). 



GonodadyJus excavatiis, fliers, E. J., On the Squillidse, Ann. and ilag. Xat. Hist., ser. 5, 

 vol. V. p. 123, pi. iii. figs. 11, 12. 



Diagnosis. — Antero-lateral angles of carapace subacute, antero-lateral angles of 

 rostrum acute, slender, shorter than elongated median spine. Fifth abdominal somite 

 smooth. Sixth with six irregular longitudinal prominences, separated by deep inter- 

 spaces, and confluent distally. Telson deeply excavated posteriorly, and with five 

 prominent smooth longitudinal obtuse keels, the submedians longest and reaching to 

 the postero-lateral lobe. First antennae very long. 



Length, |th inch. 



Locality. — Miers describes this species from a single male specimen of unknown 

 origin. 



Remarks. — The published description does not state that the sixth abdominal 

 somite is fused with the telson. 



8. (?) Protosquilla furcicaitdata (Miers). 



Gonodadyhis furcicaudahis, Miers, E. J., On tlie Squillidae, Ann. and Mag. Nat. Hist., ser. 5, 

 vol. v., 1880, p. 124, pi. iii. figs. 13-16. 



Although Miers does not state whether the sixth abdominal somite of this species 

 is fused with the telson, it exhibits so many features of resemblance to the Protosquillse 

 that I place it here provisionally. It may be briefly described as follows. Eyes, 

 antennae, rostrum, carapace, exposed thoracic somites, and first five abdominal somites as 



