DESCRIPTION OF A NEW GOBIOID FISH. 
92o 
Origin of spinous dorsal little behind that of pectoral, front spines little 
curved, though third spine as depressed extends back as nearly as far as last. 
Soft dorsal inserted about midway between hind eye edge and caudal base, 
front rays highest. Anal like soft dorsal, origin slightly behind that of 
soft dorsal. Caudal small, rounded. Pectoral large, broad, rounded. 
V entral disk nearly third wider than long, rays all greatly branched and 
spines each with several flat cutaneous flaps in front. Vent close before 
anal, with slight papilla. 
Colour in life pink over entire body ; in alcohol faded pale brownish. 
Under a lens the alcohol specimen shows dull brownish dots dusted in 
small patch on cheeks and along side medianly. Fins all uniformly pale 
to whitish. Iris whitish, with greyish tinge above. 
Length 34 mm. 
Type, No. 51,094, Academy of Natural Sciences of Philadelphia. Loca- 
lity. Tuticorin, India. 
This interesting little fish is found commensal with the Alcyonarian 
Solenocaulon tortuosum Cray, in company with certain Alpheids and other 
crustaceans.* We are unaware that the commensal habit has been noted 
in the other species of the genus, Pleurosicya holdinghi Weber, obtained oS' 
Western New Guinea. The latter differs at once in the much higher soft 
dorsal and in the fin formulae. Weber’s examples were smaller, 22 to 31 
mm. long, and were dredged at a depth of 32 meters ; ours came from 14 
to 16 meters, sandy bottom. 
(Named after Dr. Nelson Annandale, in slight recognition of his work on 
Indian fishes.) 
* For details of the commensahsm of this fish and the associated crustaceans 
with Solenocaulon, see page 929 of this Journal. 
