REPORT ON THE CIRRIPEDIA. 13] 



Umbo of the carina] latus in the middle of the carina) margin. Peduncle Bhort. Males, 

 one on each side. 



Of this small species four specimens were collected together with Scalpelhim 

 parallelogram/ma. 



The capitulwn is very rhirk and robust, especially near the peduncle, growing flatter 

 towards the apex. The margins of the valves and the structure of the surface of the valves 

 cannot be easily made out, as they are covered by a rather thick chitinous membrane, 

 which is woolly, with short hairs at the surface. Valves distinctly striated when the 

 chit in is taken away. 



The scutum is broad, its breadth being almost two-thirds of its length, convex, 

 quadrilateral, with the occludent margin slightl) aided. Tergal margin bollowed out, 

 lateral margin arched, basal margin almost straight. The umbo is at the apex, which 

 projects considerably over the tergum. 



The tergum is triangular, flat, with the inferior part produced and the occludenl 

 margin slightly convex. Its area is a little greater than thai of the scutum. 



The carina is boat-shaped, narrower at the upper than at the lower extremity. Sides 

 only developed at the superior half of the valve, and here semilunar shaped. Striae much 

 more distinct, and separated by broader interspaces than on the other valves. The lines oi 

 growth are oblique. The flattened roof of the carina in most other species is totally 

 wanting in the present species. 



The upper lotus is quadrilateral, or rather, trapeziform, the scutal margin being 

 much longer than the carinal margin; the latter is straight, the former is distinctly 

 hollowed out, with the angles at the upper and under extremities very sharp. 



The rostml latus is nearly twice as long as broad, widening considerably from the 

 rostral extremity to the opposite end. 



The infra-median latus is small, triangular, with the umbo at the apex. 



The carina! latus is large, greater in area than the rostral and infra-median lateia 

 together. Basal margin straight, carinal margin very concave in the superior half; the 

 umbo of the carinal latus is placed almost in the middle of the carinal margin; inferior 

 half of the carinal margin very convex. Upper margin straight, lateral margin also 

 straight, making with the upper margin an angle a little greater than 90°. 



Length of the capitulum about 9 mm., of the peduncle 3 - 5 mm. 



The peduncle is short, with the scales in about seven longitudinal rows covered bythe 

 chitinous membrane, each row containing transversely about eight scales. 



Mouth. — Thelah-um is angularly bent in the middle, the angle being directed towards 

 the adductor muscle of the scutum. The margin of the lahrum is furnished with extremely 

 small teeth. The palpi are triangular and small, with a few hairs only at the extremity. 

 The mandibles have three nearly equal and equi-distanl teeth: the inferior angl 



