138 STALK-EYED CRUSTACEA. 



first somite this carina projects forward as a sharp tooth. On each side of 

 this somite there is a prominent acute tooth directed obliquely forward. 

 The median carina is continued on the base of the telson, where it is broken 

 into two teeth, the anterior of which is the larger. There is, beside, a pair 

 of spinulose carinaa on the dorsal side of the telson, and the lateral margins 

 of the telson are also spinlilose. The lower margins of the pleurae are 

 spined in the way common to species of this genus. The eyes are large, 

 and dark brown or black in color. The antennal scale is shorter than the 

 rostrum, broadly ovate, and devoid of spines on either surface. 



The posterior pair of abdominal appendages are also destitute of spines, 

 save the customary one on the outer margin of the external branch. The 

 two branches are of about equal length and shorter than the telson. 



The dactyli of the ambulatory legs are lanceolate. 



In this species, as in G. aciileata A. M. Edw. {= Rhachocaris agassizii 

 Smith), G. regalis Bate, G. investigaions W.-M., G. smithii W.-M., G. cceca 

 W.-M., and G. loricata Fax., the fourth carina is expanded anteriorly into 

 a very large, vertically compressed spine. In other respects the species 

 here described is very different from those, as will be readily perceived 

 by comparison of the figures and descriptions. 



Length of a female, 116 mm. ; length of carapace (including rostrum) 

 45 mm. ; length of rostrum, 20 mm. ; length of telson, 12 mm. ; length of 

 antennal scale, 11.5 mm. ; breadth of antennal scale, 7.3 mm. 



Station ? (no label.) 12 + specimens. 



" 3395. 730 fathoms. 1 specimen. 

 " 3418. 660 '' 2 specimens. 



Glyphocrangon spinulosa Fax. 

 Plate XXXVIII. 



Bull. Mus. Comp. Zool., XXIV. 202, 1893 



Rostrum long, acute, margins armed with vertically flattened spinous teeth 

 from base to the level of the anterior extremity of the eyes, beyond which 

 point the margins are unarmed ; the anterior pair of the lateral spines are 

 the largest. A median longitudinal row of smaller spines extends from the 

 anterior boundary of the gastric area to the anterior fourth of the rostrum ; 

 anteriorly these spines are confluent at their bases, forming a carina which is 

 continued forward beyond the spines to the tip of the rostrum. Just inside 



