Fishes from the Azores. 345 
containing examples of two species new to science, one of 
these being the type of a new genus. A complete list is 
given below. 
Raiide. 
Raia maderensis, Lowe. 
Clupeidz. 
Clupea maderensis, Lowe. 
Murenide. 
Murena helena, Linn. 
Murena august’, Kaup. 
Murena unicolor, Delaroche. 
Conger vulgaris, Cuv. 
Sternoptychiide. 
Argyropelecus Olfersit, Cuv. 
Sternoptyx diaphana, Hermann. 
Scopelide. 
MAcRISTIUM, gen. nov. 
Allied to Bathysaurus, Giinth., which it resembles in the 
position of the fins and the number of rays, but with the 
mouth only moderately wide, the dentition weaker, the maxil- 
lary dilated posteriorly, the fin-rays much prolonged, and 
the ventrals still more anterior in position. 
Macristium Chavest, sp. n. 
Depth of body 74 times in the total length, length of head 
5 times. Diameter of eye nearly 8 times in the length of 
head, interorbital width 34 times. Maxillary broad, rounded 
posteriorly, extending to below the anterior quarter of eye. 
Dorsal with 18 rays, commencing above the axil of pectoral, 
the length of its base 24 times in the total length (without 
caudal), the middle and posterior rays, when laid back, ex- 
tending beyond the base of caudal. No adipose fin. Anal 
with 12 rays, commencing directly behind the vent, which is 
slightly posterior to the last dorsal ray. Pectorals with 16 
rays, elongate. Ventrals just behind the pectorals, with 
8 rays, extending to the caudal. The naked body of a 
uniform greyish colour. 
One specimen. Total length 110 mm. (to base of caudal). 
