130 Mr. S. A. Rohwer on new 
into three parts, the apex with a slender spine-line projection ; 
mesoscutum finely lineate, with a distinct, median, longi- 
tudinal sulcus on the posterior two-thirds ; scutellum more 
coarsely lineate than the scutum, the median sulci. near ly 
parallel; propodeum dull, finely coriaceous, with three feeble, 
median, longitudinal carine, and basally with two faint, 
transverse, 1 raised lines ; abdomen shining, short (subequal 
in length with the thorax), almost spherical in dorsal outline ; 
Tetrastichus ayyari, Rohwer. Antenna of paratype a. 
marginal and submarginal veins of subequal length. 
Uniformly black, with a greenish reflection on head and 
thorax ; scape yellowish brown; legs, except anterior cox 
and femora which are brownish, yellowish white ; wings 
hyaline ; venation yellowish. 
Type-locality.—Coimbatore, South India. 
Type.—Cat. No. 20,984, U.S.N.M. 
Described from eleven females received from Ramakrishna 
Ayyar under his number 6 (or 9) and labelled: “ Parasitic 
on ( of Cholam chilo. Insectary. 19.v1.14, 20.vii.14, 
21.v1.14.” Antenna of paratype a on slide 880. 
Named for Ramakrishna Ayyar. 
Tetrastichus isaaci, sp. n. 
In the generic tabulation given by Girault falls in Tetra- 
stichomorpha, aud there is more closely allied to flava, Girault, 
but differs in some details of colour and in the antenna. 
Female.—Length 2°25 mm. Dorsal part of frons with a 
few widely scattered setigerous pits; a transverse ridge 
immediately behind the anterior ocellus and another 
immediately behind the posterior ocelli ; the posterior ridge 
projects ventrally along the posterior margin of the eye ; 
antenna as in figure 7 ; caudal margin of pronotum with a 
row of well-separated bristles ; mesoscutum finely irregu- 
larly aciculate, with a longitudinal median sulcus posteriorly ; 
scutellum large, its surface with irregular aciculations, 
laterally with a longitudinal grooved line, along which there 
are a few widely scattered bristles ; propodeum short, its 
