398 Dr. N. Annandale on (he 



otherwise sraootli. Carina feebly arched ; umbo subterminal, 

 almost in coutaet witli the carinal mar^^in of the teri^a ; dorsal 

 surface flat, with well-defined borders ; lateral surfaces feebly 

 concave. Ttrga laro^e. irregularly triangular ; the carinal and 

 scutal margins sinuous, the former extending far above the 

 carina : umbo terminal, rctroverted; occludent margin convex 

 outwards. Scuta large, subtriangular, with a well-defined 

 tooth above the apex of the upper latns ; lateral margin 

 sinuous; lower margin convex downwards; umbo terminal, 

 slightly over the scutal edge of the terga. Upper latus 

 moderate, pentagonal, subtriangular. Carina! lalns of almost 

 the same size, triangular, not projecting behind the carina, 

 but meeting its fellow in the middle line below the base of 

 this plate. Inframedian latus moderate, triangular, pointed, 

 and slightly rctroverted towards the carina below, rather 

 broad above. Rostra! !utus small, shallow, oblong, shallower 

 below the opening than towards the inframedian latus. 



Peduncle shorter than the capitulum, but somewhat 

 variable in length ; slender, cylindrical, feebly or not at all 

 expanded below, with about eight alternating series of 

 smooth almost linear plates ; about six plates in each series. 



Appendages i^-c. — Cirri drlicate ; the rami of the first 

 cirrus subecjual, laterally flattened. Anal appendages long, 

 slender, cylindrical, with about 8 joints and a very long 

 bunch of fine hairs at the tip. No penis. 



Month. — Labrum moderate. ^landible with three teeth ; 

 the inner tooth boldly dichotomous, the outer edge of its 

 inner branch armed with stout curved bristles. Maxilla 

 large, its biting-surface bilobed,with outermost bristle large, 

 the remainder stout and long, few in number. 



Dimensions. — 



mm. 



Leno'th of capitulum 15 



Breadth „ 8 



Length of peduncle 11 



Localities — Gulf of Oman ; off Cochin ; Gulf of Manaar ; 

 Andaman Sea: 130-700 fath. On various objects, such as 

 //?/(7/o«f?)j«-filaments ; numerous specimens. 



A common species in the India Seas ; variable as regards 

 its proportions and colour. Several of the specimens bear 

 complemental males. 



There are two other species of Scalpellum in the collection 

 which may be new, but one of them is possibly identical 

 with Hcek's truncatum. It seems better to wait until more 

 material is available before describinir them. 



