24.0 PERCY SLADEN TRUST EXPEDITION. 
Triglide. 
129. Lepidotrigla alcocki, sp.n. (Plate 28. fig. 4.) 
Depth of body 4 in the length, length of head 8. Snout longer than eye, the diameter 
of which is 33 in the length of head and less than the depth of the suborbitals. No 
transverse groove behind the concave interorbital region, the width of which is 6 to 6} 
in the length of head. Preeorbitals forming a pair of rounded projections, each margined 
with 7 to 9 spines; a pair of spines above the anterior edge of each eye. Maxillary not 
quite reaching to below the eye. 62 to 63 scales in the lateral line, which is unarmed ; 
24 or 25 spiny plates at the base of the dorsals. Dorsal IX, 15-16; first spine serrated, 
third longest, $ the length of head. Anal 16. Caudal slightly emarginate. Pectoral 
extending to above fourth anal ray, ventrals to origin of anal. Inner surface of pectoral 
blackish, crossed bya broken oblique white stripe and with a pale edge which is broadest 
below. 
Saya de Malha Bank, over 123 fathoms. 
Two specimens, 160 mm. in total length. 
[have named this species after Dr. A. Alcock, F.R.S., in recognition of his valuable 
work on the deep-sea fishes of the Indian Ocean. 
1380. Peristethus serrulatus, Alcock. 
Saya de Malha Bank, over 123 fathoms. 
Dactylopteride. 
131. Dactylopterus orientalis, C. & V. 
Cargados Carajos, 20 to 30 fathoms. 
Gobiide. 
132. Gobiomorphus cinctus, sp. n. 
Depth of body 33 in the length, length of head 3. Head a little deeper than broad, 
nearly 15 as long as deep. Snout shorter than eye, the diameter of which is 8 in the 
length of head; interorbital space narrow. Mouth oblique; lower jaw projecting; 
maxillary extending to below anterior } of eye. Head naked; about 33 scales in a 
longitudinal series on the body. Dorsal VI,I11. AnalI 9. Pectoral } the length of 
head; ventrals extending to the anal. Caudal rounded. Yellowish; head and body 
crossed by 10 or 11 brownish vertical bars with dark edges. 
Chagos Archipelago, Salomon. 
Two specimens, 28 mm. in total length. 
133. Asterropteryx monacanthus, sp. n. 
Depth of body 8 to 35 in the length, length of head 3. Snout shorter than eye, the 
diameter of which is 3 in the length of head; interorbital space narrow. Mouth rather 
small, oblique ; jaws equal anteriorly; maxillary extending to below anterior } of eye. 
A single, rather strong spine at the angle of the preeoperculum. Head scaly, except the 
snout; scales on the body large, rounded, ciliated, 22 or 28 in a longitudinal series. 
